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#1 2020-09-03 13:15:16

Wild Penguin
Member
Registered: 2015-03-19
Posts: 186

Setting default kernel flavour to boot with rEFInd (1stwprbm) [SOLVED]

Hi!

Background: I currently use rEFInd to boot (*).

I have three Kernels currently installed (linux, linux-lts, linux-zen).

REFInd can find them all with the current configuration. It bundles them all behind "Arch Linux" boot entry (which it generates automatically according to the configuration). I can not seem to find a way to choose any sensible way to override this default; as a workaround I can:

  1. choose at every bootup manually another entry (this exactly the #1stworldproblem I'm trying to avoid!),

  2. touch the Kernel I want to be the default, so it's timestamp will be newest. However that is a bit cumbersome and will be lost whenever some or all of the kernels are upgraded next time (or, rather raffled randomly accordingly).

  3. make manual entries for rEFInd. I will lose it's dynamical features and need to maintain these stanzas, which I feel is against rEFInds "philosophy".

I'm aware of the default_selection option in the configuration file, along with it's "+" atom (symbol), however it seems this will not propagate to different versions of a single entry.

default_selection "+,linux,linux-zen,linux-lts"

Any ideas? Is this even possible with rEFInd? Optimally, so that the last chosen Kernel (flavor) would be booted? Alternatively, something besides touching or making manual boot stanzas.

Thanks for any suggestions!

p.s. *)  Actually, I also have grub2 installed but I like the rEFInds graphical look; although, I presume, similar is possible with grub, and I know it can be configured to remember the last booted entry, I'd rather use rEFInd since it is simpler to re-configure to my looking and more intelligent in finding things to boot (say, I want to add some tool to my EFI partition -> just add and go! Add a USB stick -> choose what to boot at rEFInds menus rather than BIOS (or typing to grub cmdline along with learning and remembering it's syntax)).

I could also take a loot at systemd-boot, but I haven't so far, since I'm most familiar with grub and rEFInd.

My whole /boot/EFI/refind/refind.conf:

$ cat refind.conf
#
# refind.conf
# Configuration file for the rEFInd boot menu
#

# Timeout in seconds for the main menu screen. Setting the timeout to 0
# disables automatic booting (i.e., no timeout). Setting it to -1 causes
# an immediate boot to the default OS *UNLESS* a keypress is in the buffer
# when rEFInd launches, in which case that keypress is interpreted as a
# shortcut key. If no matching shortcut is found, rEFInd displays its
# menu with no timeout.
#
timeout 2

# Normally, when the timeout period has passed, rEFInd boots the
# default_selection. If the following option is uncommented, though,
# rEFInd will instead attempt to shut down the computer.
# CAUTION: MANY COMPUTERS WILL INSTEAD HANG OR REBOOT! Macs and more
# recent UEFI-based PCs are most likely to work with this feature.
# Default value is true
#
#shutdown_after_timeout

# Whether to store rEFInd's rEFInd-specific variables in NVRAM (1, true,
# or on) or in files in the "vars" subdirectory of rEFInd's directory on
# disk (0, false, or off). Using NVRAM works well with most computers;
# however, it increases wear on the motherboard's NVRAM, and if the EFI
# is buggy or the NVRAM is old and worn out, it may not work at all.
# Storing variables on disk is a viable alternative in such cases, or
# if you want to minimize wear and tear on the NVRAM; however, it won't
# work if rEFInd is stored on a filesystem that's read-only to the EFI
# (such as an HFS+ volume), and it increases the risk of filesystem
# damage. Note that this option affects ONLY rEFInd's own variables,
# such as the PreviousBoot, HiddenTags, HiddenTools, and HiddenLegacy
# variables. It does NOT affect Secure Boot or other non-rEFInd
# variables.
# Default is true
#
#use_nvram false

# Screen saver timeout; the screen blanks after the specified number of
# seconds with no keyboard input. The screen returns after most keypresses
# (unfortunately, not including modifier keys such as Shift, Control, Alt,
# or Option). Setting a value of "-1" causes rEFInd to start up with its
# screen saver active. The default is 0, which disables the screen saver.
#
#screensaver 300

# Hide user interface elements for personal preference or to increase
# security:
#  banner      - the rEFInd title banner (built-in or loaded via "banner")
#  label       - boot option text label in the menu
#  singleuser  - remove the submenu options to boot macOS in single-user
#                or verbose modes; affects ONLY macOS
#  safemode    - remove the submenu option to boot macOS in "safe mode"
#  hwtest      - the submenu option to run Apple's hardware test
#  arrows      - scroll arrows on the OS selection tag line
#  hints       - brief command summary in the menu
#  editor      - the options editor (+, F2, or Insert on boot options menu)
#  badges      - device-type badges for boot options
#  all         - all of the above
# Default is none of these (all elements active)
#
#hideui singleuser
#hideui all

# Set the name of a subdirectory in which icons are stored. Icons must
# have the same names they have in the standard directory. The directory
# name is specified relative to the main rEFInd binary's directory. If
# an icon can't be found in the specified directory, an attempt is made
# to load it from the default directory; thus, you can replace just some
# icons in your own directory and rely on the default for others.
# Icon files may be in any supported format -- ICNS (*.icns), BMP (*.bmp),
# PNG (*.png), or JPEG (*.jpg or *.jpeg); however, rEFInd's BMP and JPEG
# implementations do not support transparency, which is highly desirable
# in icons.
# Default is "icons".
#
#icons_dir myicons
#icons_dir icons/snowy

# Use a custom title banner instead of the rEFInd icon and name. The file
# path is relative to the directory where refind.efi is located. The color
# in the top left corner of the image is used as the background color
# for the menu screens. Currently uncompressed BMP images with color
# depths of 24, 8, 4 or 1 bits are supported, as well as PNG and JPEG
# images. (ICNS images can also be used, but ICNS has limitations that
# make it a poor choice for this purpose.) PNG and JPEG support is
# limited by the underlying libraries; some files, like progressive JPEGs,
# will not work.
#
#banner hostname.bmp
#banner mybanner.jpg
#banner icons/snowy/banner-snowy.png

# Specify how to handle banners that aren't exactly the same as the screen
# size:
#  noscale     - Crop if too big, show with border if too small
#  fillscreen  - Fill the screen
# Default is noscale
#
#banner_scale fillscreen

# Icon sizes. All icons are square, so just one value is specified. The
# big icons are used for OS selectors in the first row and the small
# icons are used for tools on the second row. Drive-type badges are 1/4
# the size of the big icons. Legal values are 32 and above. If the icon
# files do not hold icons of the proper size, the icons are scaled to
# the specified size. The default values are 48 and 128 for small and
# big icons, respectively.
#
#small_icon_size 96
#big_icon_size 256

# Custom images for the selection background. There is a big one (144 x 144)
# for the OS icons, and a small one (64 x 64) for the function icons in the
# second row. If only a small image is given, that one is also used for
# the big icons by stretching it in the middle. If only a big one is given,
# the built-in default will be used for the small icons. If an image other
# than the optimal size is specified, it will be scaled in a way that may
# be ugly.
#
# Like the banner option above, these options take a filename of an
# uncompressed BMP, PNG, JPEG, or ICNS image file with a color depth of
# 24, 8, 4, or 1 bits. The PNG or ICNS format is required if you need
# transparency support (to let you "see through" to a full-screen banner).
#
#selection_big   selection-big.bmp
#selection_small selection-small.bmp

# Set the font to be used for all textual displays in graphics mode.
# For best results, the font must be a PNG file with alpha channel
# transparency. It must contain ASCII characters 32-126 (space through
# tilde), inclusive, plus a glyph to be displayed in place of characters
# outside of this range, for a total of 96 glyphs. Only monospaced fonts
# are supported. Fonts may be of any size, although large fonts can
# produce display irregularities.
# The default is rEFInd's built-in font, Luxi Mono Regular 12 point.
#
#font myfont.png

# Use text mode only. When enabled, this option forces rEFInd into text mode.
# Passing this option a "0" value causes graphics mode to be used. Pasing
# it no value or any non-0 value causes text mode to be used.
# Default is to use graphics mode.
#
#textonly

# Set the EFI text mode to be used for textual displays. This option
# takes a single digit that refers to a mode number. Mode 0 is normally
# 80x25, 1 is sometimes 80x50, and higher numbers are system-specific
# modes. Mode 1024 is a special code that tells rEFInd to not set the
# text mode; it uses whatever was in use when the program was launched.
# If you specify an invalid mode, rEFInd pauses during boot to inform
# you of valid modes.
# CAUTION: On VirtualBox, and perhaps on some real computers, specifying
# a text mode and uncommenting the "textonly" option while NOT specifying
# a resolution can result in an unusable display in the booted OS.
# Default is 1024 (no change)
#
#textmode 2

# Set the screen's video resolution. Pass this option either:
#  * two values, corresponding to the X and Y resolutions
#  * one value, corresponding to a GOP (UEFI) video mode
# Note that not all resolutions are supported. On UEFI systems, passing
# an incorrect value results in a message being shown on the screen to
# that effect, along with a list of supported modes. On EFI 1.x systems
# (e.g., Macintoshes), setting an incorrect mode silently fails. On both
# types of systems, setting an incorrect resolution results in the default
# resolution being used. A resolution of 1024x768 usually works, but higher
# values often don't.
# Default is "0 0" (use the system default resolution, usually 800x600).
#
#resolution 1024 768
#resolution 1440 900
#resolution 3
# resolution 3440 1440
resolution 1280 1024

# Enable touch screen support. If active, this feature enables use of
# touch screen controls (as on tablets). Note, however, that not all
# tablets' EFIs provide the necessary underlying support, so this
# feature may not work for you. If it does work, you should be able
# to launch an OS or tool by touching it. In a submenu, touching
# anywhere launches the currently-selection item; there is, at present,
# no way to select a specific submenu item. This feature is mutually
# exclusive with the enable_mouse feature. If both are uncommented,
# the one read most recently takes precedence.
#
#enable_touch

# Enable mouse support. If active, this feature enables use of the
# computer's mouse. Note, however, that not all computers' EFIs
# provide the necessary underlying support, so this feature may not
# work for you. If it does work, you should be able to launch an
# OS or tool by clicking it with the mouse pointer. This feature
# is mutually exclusive with the enable_touch feature. If both
# are uncommented, the one read most recently takes precedence.
#
#enable_mouse

# Size of the mouse pointer, in pixels, per side.
# Default is 16
#
#mouse_size

# Speed of mouse tracking. Higher numbers equate to faster
# mouse movement. This option requires that enable_mouse be
# uncommented.
# Legal values are between 1 and 32. Default is 4.
#
#mouse_speed 4

# Launch specified OSes in graphics mode. By default, rEFInd switches
# to text mode and displays basic pre-launch information when launching
# all OSes except macOS. Using graphics mode can produce a more seamless
# transition, but displays no information, which can make matters
# difficult if you must debug a problem. Also, on at least one known
# computer, using graphics mode prevents a crash when using the Linux
# kernel's EFI stub loader. You can specify an empty list to boot all
# OSes in text mode.
# Valid options:
#   osx     - macOS
#   linux   - A Linux kernel with EFI stub loader
#   elilo   - The ELILO boot loader
#   grub    - The GRUB (Legacy or 2) boot loader
#   windows - Microsoft Windows
# Default value: osx
#
#use_graphics_for osx,linux

# Which non-bootloader tools to show on the tools line, and in what
# order to display them:
#  shell            - the EFI shell (requires external program; see rEFInd
#                     documentation for details)
#  memtest          - the memtest86 program, in EFI/tools, EFI/memtest86,
#                     EFI/memtest, EFI/tools/memtest86, or EFI/tools/memtest
#  gptsync          - the (dangerous) gptsync.efi utility (requires external
#                     program; see rEFInd documentation for details)
#  gdisk            - the gdisk partitioning program
#  apple_recovery   - boots the Apple Recovery HD partition, if present
#  windows_recovery - boots an OEM Windows recovery tool, if present
#                     (see also the windows_recovery_files option)
#  mok_tool         - makes available the Machine Owner Key (MOK) maintenance
#                     tool, MokManager.efi, used on Secure Boot systems
#  csr_rotate       - adjusts Apple System Integrity Protection (SIP)
#                     policy. Requires "csr_values" to be set.
#  about            - an "about this program" option
#  hidden_tags      - manage hidden tags
#  exit             - a tag to exit from rEFInd
#  shutdown         - shuts down the computer (a bug causes this to reboot
#                     many UEFI systems)
#  reboot           - a tag to reboot the computer
#  firmware         - a tag to reboot the computer into the firmware's
#                     user interface (ignored on older computers)
#  fwupdate         - a tag to update the firmware; launches the fwupx64.efi
#                     (or similar) program
#  netboot          - launch the ipxe.efi tool for network (PXE) booting
# Default is shell,memtest,gdisk,apple_recovery,windows_recovery,mok_tool,about,hidden_tags,shutdown,reboot,firmware,fwupdate
#
#showtools shell, gdisk, memtest, mok_tool, apple_recovery, windows_recovery, about, hidden_tags, reboot, exit, firmware, fwupdate

# Tool binaries to be excluded from the tools line, even if the
# general class is specified in showtools. This enables trimming an
# overabundance of tools, as when you see multiple mok_tool entries
# after installing multiple Linux distributions.
# Just as with dont_scan_files, you can specify a filename alone, a
# full pathname, or a volume identifier (filesystem label, partition
# name, or partition GUID) and a full pathname.
# Default is an empty list (nothing is excluded)
#
#dont_scan_tools ESP2:/EFI/ubuntu/mmx64.efi,gptsync_x64.efi

# Boot loaders that can launch a Windows restore or emergency system.
# These tend to be OEM-specific.
# Default is LRS_ESP:/EFI/Microsoft/Boot/LrsBootmgr.efi
#
#windows_recovery_files LRS_ESP:/EFI/Microsoft/Boot/LrsBootmgr.efi

# Directories in which to search for EFI drivers. These drivers can
# provide filesystem support, give access to hard disks on plug-in
# controllers, etc. In most cases none are needed, but if you add
# EFI drivers and you want rEFInd to automatically load them, you
# should specify one or more paths here. rEFInd always scans the
# "drivers" and "drivers_{arch}" subdirectories of its own installation
# directory (where "{arch}" is your architecture code); this option
# specifies ADDITIONAL directories to scan.
# Default is to scan no additional directories for EFI drivers
#
#scan_driver_dirs EFI/tools/drivers,drivers

# Which types of boot loaders to search, and in what order to display them:
#  internal      - internal EFI disk-based boot loaders
#  external      - external EFI disk-based boot loaders
#  optical       - EFI optical discs (CD, DVD, etc.)
#  netboot       - EFI network (PXE) boot options
#  hdbios        - BIOS disk-based boot loaders
#  biosexternal  - BIOS external boot loaders (USB, eSATA, etc.)
#  cd            - BIOS optical-disc boot loaders
#  manual        - use stanzas later in this configuration file
# Note that the legacy BIOS options require firmware support, which is
# not present on all computers.
# The netboot option is experimental and relies on the ipxe.efi and
# ipxe_discover.efi program files.
# On UEFI PCs, default is internal,external,optical,manual
# On Macs, default is internal,hdbios,external,biosexternal,optical,cd,manual
#
#scanfor internal,external,optical,manual

# By default, rEFInd relies on the UEFI firmware to detect BIOS-mode boot
# devices. This sometimes doesn't detect all the available devices, though.
# For these cases, uefi_deep_legacy_scan results in a forced scan and
# modification of NVRAM variables on each boot. Adding "0", "off", or
# "false" resets to the default value. This token has no effect on Macs or
# when no BIOS-mode options are set via scanfor.
# Default is unset (or "uefi_deep_legacy_scan false")
#
#uefi_deep_legacy_scan

# Delay for the specified number of seconds before scanning disks.
# This can help some users who find that some of their disks
# (usually external or optical discs) aren't detected initially,
# but are detected after pressing Esc.
# The default is 0.
#
#scan_delay 5

# When scanning volumes for EFI boot loaders, rEFInd always looks for
# macOS's and Microsoft Windows' boot loaders in their normal locations,
# and scans the root directory and every subdirectory of the /EFI directory
# for additional boot loaders, but it doesn't recurse into these directories.
# The also_scan_dirs token adds more directories to the scan list.
# Directories are specified relative to the volume's root directory. This
# option applies to ALL the volumes that rEFInd scans UNLESS you include
# a volume name and colon before the directory name, as in "myvol:/somedir"
# to scan the somedir directory only on the filesystem named myvol. If a
# specified directory doesn't exist, it's ignored (no error condition
# results). The default is to scan the "boot" directory in addition to
# various hard-coded directories.
#
#also_scan_dirs boot,ESP2:EFI/linux/kernels

# Partitions (or whole disks, for legacy-mode boots) to omit from scans.
# For EFI-mode scans, you normally specify a volume by its label, which you
# can obtain in an EFI shell by typing "vol", from Linux by typing
# "blkid /dev/{devicename}", or by examining the disk's label in various
# OSes' file browsers. It's also possible to identify a partition by its
# unique GUID (aka its "PARTUUID" in Linux parlance). (Note that this is
# NOT the partition TYPE CODE GUID.) This identifier can be obtained via
# "blkid" in Linux or "diskutil info {partition-id}" in macOS.
# For legacy-mode scans, you can specify any subset of the boot loader
# description shown when you highlight the option in rEFInd.
# The default is "LRS_ESP".
#
#dont_scan_volumes "Recovery HD"

# Directories that should NOT be scanned for boot loaders. By default,
# rEFInd doesn't scan its own directory, the EFI/tools directory, the
# EFI/memtest directory, the EFI/memtest86 directory, or the
# com.apple.recovery.boot directory. Using the dont_scan_dirs option
# enables you to "blacklist" other directories; but be sure to use "+"
# as the first element if you want to continue blacklisting existing
# directories. You might use this token to keep EFI/boot/bootx64.efi out
# of the menu if that's a duplicate of another boot loader or to exclude
# a directory that holds drivers or non-bootloader utilities provided by
# a hardware manufacturer. If a directory is listed both here and in
# also_scan_dirs, dont_scan_dirs takes precedence. Note that this
# blacklist applies to ALL the filesystems that rEFInd scans, not just
# the ESP, unless you precede the directory name by a filesystem name or
# partition unique GUID, as in "myvol:EFI/somedir" to exclude EFI/somedir
# from the scan on the myvol volume but not on other volumes.
#
#dont_scan_dirs ESP:/EFI/boot,EFI/Dell,EFI/memtest86

# Files that should NOT be included as EFI boot loaders (on the
# first line of the display). If you're using a boot loader that
# relies on support programs or drivers that are installed alongside
# the main binary or if you want to "blacklist" certain loaders by
# name rather than location, use this option. Note that this will
# NOT prevent certain binaries from showing up in the second-row
# set of tools. Most notably, various Secure Boot and recovery
# tools are present in this list, but may appear as second-row
# items.
# The file may be specified as a bare name (e.g., "notme.efi"), as
# a complete pathname (e.g., "/EFI/somedir/notme.efi"), or as a
# complete pathname with volume (e.g., "SOMEDISK:/EFI/somedir/notme.efi"
# or 2C17D5ED-850D-4F76-BA31-47A561740082:/EFI/somedir/notme.efi").
# OS tags hidden via the Delete or '-' key in the rEFInd menu are
# added to this list, but stored in NVRAM.
# The default is shim.efi,shim-fedora.efi,shimx64.efi,PreLoader.efi,
# TextMode.efi,ebounce.efi,GraphicsConsole.efi,MokManager.efi,HashTool.efi,
# HashTool-signed.efi,bootmgr.efi,fb{arch}.efi
# (where "{arch}" is the architecture code, like "x64").
#
#dont_scan_files shim.efi,MokManager.efi

# Scan for Linux kernels that lack a ".efi" filename extension. This is
# useful for better integration with Linux distributions that provide
# kernels with EFI stub loaders but that don't give those kernels filenames
# that end in ".efi", particularly if the kernels are stored on a
# filesystem that the EFI can read. When set to "1", "true", or "on", this
# option causes all files in scanned directories with names that begin with
# "vmlinuz" or "bzImage" to be included as loaders, even if they lack ".efi"
# extensions. Passing this option a "0", "false", or "off" value causes
# kernels without ".efi" extensions to NOT be scanned.
# Default is "true" -- to scan for kernels without ".efi" extensions.
#
#scan_all_linux_kernels false

# Combine all Linux kernels in a given directory into a single entry.
# When so set, the kernel with the most recent time stamp will be launched
# by default, and its filename will appear in the entry's description.
# To launch other kernels, the user must press F2 or Insert; alternate
# kernels then appear as options on the sub-menu.
# Default is "true" -- kernels are "folded" into a single menu entry.
#
#fold_linux_kernels false

# Comma-delimited list of strings to treat as if they were numbers for the
# purpose of kernel version number detection. These strings are matched on a
# first-found basis; that is, if you want to treat both "linux-lts" and
# "linux" as version strings, they MUST be specified as "linux-lts,linux",
# since if you specify it the other way, both vmlinuz-linux and
# vmlinuz-linux-lts will return with "linux" as the "version string," which
# is not what you'd want. Also, if the kernel or initrd file includes both a
# specified string and digits, the "version string" includes both. For
# instance, "vmlinuz-linux-4.8" would yield a version string of "linux-4.8".
# This option is intended for Arch and other distributions that don't include
# version numbers in their kernel filenames, but may provide other uniquely
# identifying strings for multiple kernels. If this feature causes problems
# (say, if your kernel filename includes "linux" but the initrd filename
# doesn't), be sure this is set to an empty string
# (extra_kernel_version_strings "") or comment out the option to disable it.
# Default is no extra version strings
#
extra_kernel_version_strings linux-zen,linux-lts,linux

# Set the maximum number of tags that can be displayed on the screen at
# any time. If more loaders are discovered than this value, rEFInd shows
# a subset in a scrolling list. If this value is set too high for the
# screen to handle, it's reduced to the value that the screen can manage.
# If this value is set to 0 (the default), it's adjusted to the number
# that the screen can handle.
#
#max_tags 0

# Set the default menu selection.  The available arguments match the
# keyboard accelerators available within rEFInd.  You may select the
# default loader using:
#  - A digit between 1 and 9, in which case the Nth loader in the menu
#    will be the default. 
#  - A "+" symbol at the start of the string, which refers to the most
#    recently booted loader.
#  - Any substring that corresponds to a portion of the loader's title
#    (usually the OS's name, boot loader's path, or a volume or
#    filesystem title).
# You may also specify multiple selectors by separating them with commas
# and enclosing the list in quotes. (The "+" option is only meaningful in
# this context.)
# If you follow the selector(s) with two times, in 24-hour format, the
# default will apply only between those times. The times are in the
# motherboard's time standard, whether that's UTC or local time, so if
# you use UTC, you'll need to adjust this from local time manually.
# Times may span midnight as in "23:30 00:30", which applies to 11:30 PM
# to 12:30 AM. You may specify multiple default_selection lines, in which
# case the last one to match takes precedence. Thus, you can set a main
# option without a time followed by one or more that include times to
# set different defaults for different times of day.
# The default behavior is to boot the previously-booted OS.
#
#default_selection 1
#default_selection Microsoft
#default_selection "+,bzImage,vmlinuz"
#default_selection Maintenance 23:30 2:00
#default_selection "Maintenance,macOS" 1:00 2:30
default_selection "+,linux,linux-zen,linux-lts"

# Enable VMX bit and lock the CPU MSR if unlocked.
# On some Intel Apple computers, the firmware does not lock the MSR 0x3A.
# The symptom on Windows is Hyper-V not working even if the CPU
# meets the minimum requirements (HW assisted virtualization and SLAT)
# DO NOT SET THIS EXCEPT ON INTEL CPUs THAT SUPPORT VMX! See
# http://www.thomas-krenn.com/en/wiki/Activating_the_Intel_VT_Virtualization_Feature!
# for more on this subject.
# The default is false: Don't try to enable and lock the MSR.
#
#enable_and_lock_vmx false

# Tell a Mac's EFI that macOS is about to be launched, even when it's not.
# This option causes some Macs to initialize their hardware differently than
# when a third-party OS is launched normally. In some cases (particularly on
# Macs with multiple video cards), using this option can cause hardware to
# work that would not otherwise work. On the other hand, using this option
# when it is not necessary can cause hardware (such as keyboards and mice) to
# become inaccessible. Therefore, you should not enable this option if your
# non-Apple OSes work correctly; enable it only if you have problems with
# some hardware devices. When needed, a value of "10.9" usually works, but
# you can experiment with other values. This feature has no effect on
# non-Apple computers.
# The default is inactive (no macOS spoofing is done).
#
#spoof_osx_version 10.9

# Set the CSR values for Apple's System Integrity Protection (SIP) feature.
# Values are one-byte (two-character) hexadecimal numbers. These values
# define which specific security features are enabled. Below are the codes
# for what the values mean. Add them up (in hexadecimal!) to set new values.
# Apple's "csrutil enable" and "csrutil disable" commands set values of 10
# and 77, respectively.
#   CSR_ALLOW_UNTRUSTED_KEXTS       0x01
#   CSR_ALLOW_UNRESTRICTED_FS       0x02
#   CSR_ALLOW_TASK_FOR_PID          0x04
#   CSR_ALLOW_KERNEL_DEBUGGER       0x08
#   CSR_ALLOW_APPLE_INTERNAL        0x10
#   CSR_ALLOW_UNRESTRICTED_DTRACE   0x20
#   CSR_ALLOW_UNRESTRICTED_NVRAM    0x40
#
#csr_values 10,77

# Include a secondary configuration file within this one. This secondary
# file is loaded as if its options appeared at the point of the "include"
# token itself, so if you want to override a setting in the main file,
# the secondary file must be referenced AFTER the setting you want to
# override. Note that the secondary file may NOT load a tertiary file.
#
#include manual.conf

# Sample manual configuration stanzas. Each begins with the "menuentry"
# keyword followed by a name that's to appear in the menu (use quotes
# if you want the name to contain a space) and an open curly brace
# ("{"). Each entry ends with a close curly brace ("}"). Common
# keywords within each stanza include:
#
#  volume    - identifies the filesystem from which subsequent files
#              are loaded. You can specify the volume by filesystem
#              label, by partition label, or by partition GUID number
#              (but NOT yet by filesystem UUID number).
#  loader    - identifies the boot loader file
#  initrd    - Specifies an initial RAM disk file
#  icon      - specifies a custom boot loader icon
#  ostype    - OS type code to determine boot options available by
#              pressing Insert. Valid values are "MacOS", "Linux",
#              "Windows", and "XOM". Case-sensitive.
#  graphics  - set to "on" to enable graphics-mode boot (useful
#              mainly for MacOS) or "off" for text-mode boot.
#              Default is auto-detected from loader filename.
#  options   - sets options to be passed to the boot loader; use
#              quotes if more than one option should be passed or
#              if any options use characters that might be changed
#              by rEFInd parsing procedures (=, /, #, or tab).
#  disabled  - use alone or set to "yes" to disable this entry.
#
# Note that you can use either DOS/Windows/EFI-style backslashes (\)
# or Unix-style forward slashes (/) as directory separators. Either
# way, all file references are on the ESP from which rEFInd was
# launched.
# Use of quotes around parameters causes them to be interpreted as
# one keyword, and for parsing of special characters (spaces, =, /,
# and #) to be disabled. This is useful mainly with the "options"
# keyword. Use of quotes around parameters that specify filenames is
# permissible, but you must then use backslashes instead of slashes,
# except when you must pass a forward slash to the loader, as when
# passing a root= option to a Linux kernel.

# Below are several sample boot stanzas. All are disabled by default.
# Find one similar to what you need, copy it, remove the "disabled" line,
# and adjust the entries to suit your needs.

# A sample entry for a Linux 3.13 kernel with EFI boot stub support
# on a partition with a GUID of 904404F8-B481-440C-A1E3-11A5A954E601.
# This entry includes Linux-specific boot options and specification
# of an initial RAM disk. Note uses of Linux-style forward slashes.
# Also note that a leading slash is optional in file specifications.
menuentry Linux {
    icon EFI/refind/icons/os_linux.png
    volume 904404F8-B481-440C-A1E3-11A5A954E601
    loader bzImage-3.3.0-rc7
    initrd initrd-3.3.0.img
    options "ro root=UUID=5f96cafa-e0a7-4057-b18f-fa709db5b837"
    disabled
}

# Below is a more complex Linux example, specifically for Arch Linux.
# This example MUST be modified for your specific installation; if nothing
# else, the PARTUUID code must be changed for your disk. Because Arch Linux
# does not include version numbers in its kernel and initrd filenames, you
# may need to use manual boot stanzas when using fallback initrds or
# multiple kernels with Arch. This example is modified from one in the Arch
# wiki page on rEFInd (https://wiki.archlinux.org/index.php/rEFInd).
menuentry "Arch Linux" {
    icon     /EFI/refind/icons/os_arch.png
    volume   "Arch Linux"
    loader   /boot/vmlinuz-linux
    initrd   /boot/initramfs-linux.img
    options  "root=PARTUUID=5028fa50-0079-4c40-b240-abfaf28693ea rw add_efi_memmap"
    submenuentry "Boot using fallback initramfs" {
        initrd /boot/initramfs-linux-fallback.img
    }
    submenuentry "Boot to terminal" {
        add_options "systemd.unit=multi-user.target"
    }
    disabled
}

# A sample entry for loading Ubuntu using its standard name for
# its GRUB 2 boot loader. Note uses of Linux-style forward slashes
menuentry Ubuntu {
    loader /EFI/ubuntu/grubx64.efi
    icon /EFI/refind/icons/os_linux.png
    disabled
}

# A minimal ELILO entry, which probably offers nothing that
# auto-detection can't accomplish.
menuentry "ELILO" {
    loader \EFI\elilo\elilo.efi
    disabled
}

# Like the ELILO entry, this one offers nothing that auto-detection
# can't do; but you might use it if you want to disable auto-detection
# but still boot Windows....
menuentry "Windows 7" {
    loader \EFI\Microsoft\Boot\bootmgfw.efi
    disabled
}

# EFI shells are programs just like boot loaders, and can be
# launched in the same way. You can pass a shell the name of a
# script that it's to run on the "options" line. The script
# could initialize hardware and then launch an OS, or it could
# do something entirely different.
menuentry "Windows via shell script" {
    icon \EFI\refind\icons\os_win.png
    loader \EFI\tools\shell.efi
    options "fs0:\EFI\tools\launch_windows.nsh"
    disabled
}

# Mac OS is normally detected and run automatically; however,
# if you want to do something unusual, a manual boot stanza may
# be the way to do it. This one does nothing very unusual, but
# it may serve as a starting point. Note that you'll almost
# certainly need to change the "volume" line for this example
# to work.
menuentry "My macOS" {
    icon \EFI\refind\icons\os_mac.png
    volume "macOS boot"
    loader \System\Library\CoreServices\boot.efi
    disabled
}

p.s.s. I'm currently having problems with linux-zen + amdgpu, which is a whole another issue (will make a thread later). I wan't to determine the cause, and test wether plain linux has the issue - but need to work sometimes and have noticed -lts does not have the issue -> in case I need to reboot, I'd rather have it choose the kernel I chose last time automatically, unless I choose otherwise!

Last edited by Wild Penguin (2020-09-04 15:33:35)

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#2 2020-09-03 14:48:21

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 10,731

Re: Setting default kernel flavour to boot with rEFInd (1stwprbm) [SOLVED]

https://www.rodsbooks.com/refind/config … ml#default

Also I can't really parse what you actually want? Do you want to always boot the LTS kernel by default or remember the last selected entry?

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#3 2020-09-03 15:48:14

Wild Penguin
Member
Registered: 2015-03-19
Posts: 186

Re: Setting default kernel flavour to boot with rEFInd (1stwprbm) [SOLVED]

Yes, V1del, I realized my very first sentences are not clear. They might be clear if one is familiar how the rEFInds works with the default configuration.

REFInd finds an installation of Arch Linux, and it finds it's Kernel(s), according to the extra_kernel_version_strings parameters in the configuration file. All these Kernels are bundled in the single OS entry for Arch Linux (as that's what they are). I can choose another Kernel version (well, flavour since Arch does / can not install several versions of the same Kernel flavour at the same time from the default repositories) manually here (IIRC via F2 or TAB) while booting up, but unless I do, rEFInd will boot whatever of the found Kernels has the newest timestamp.

I'm aware I can make manual boot entires (containing whatever I want) but that is exactly the route I would rather *not* do. REFInd is most powerful (IMO) in situations where you just install it and don't configure. Apparently, it does not have facilities to remember the last booted Kernel for the same OS. Maybe I'm just looking for functionality which is not there...

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#4 2020-09-03 16:33:13

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 10,731

Re: Setting default kernel flavour to boot with rEFInd (1stwprbm) [SOLVED]

https://www.rodsbooks.com/refind/configfile.html wrote:

fold_linux_kernels    
----
none or one of true, on, 1, false, off, or 0    
----
When uncommented or set to true, on, or 1, causes rEFInd to "fold" all Linux kernels in a given directory into a single main-menu icon. Selecting that icon launches the most recent kernel. To launch an older kernel, you must press F2, Insert, or Tab; older kernels appear on the resulting submenu display. (You can type, as root, touch /boot/vmlinuz-{whatever}, to make /boot/vmlinuz-{whatever} your default kernel in a directory.) If you prefer to see all your kernels in the main menu, set this option to false, off, or 0. Note that this option is new with version 0.9.0, which changes the default behavior; earlier versions of rEFInd behaved as if fold_linux_kernels false was set.

Seems you have to opt for not going with the combined menu if you want that.

Last edited by V1del (2020-09-03 16:33:30)

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#5 2020-09-03 17:05:28

Wild Penguin
Member
Registered: 2015-03-19
Posts: 186

Re: Setting default kernel flavour to boot with rEFInd (1stwprbm) [SOLVED]

V1del,

I believe that could work. I didn't notice that option previously. I will test it later; however, it may well be, that rEFInd will still insist that there is just a single boot entry and that option is only cosmetic (i.e. how the menu behaves). It might still not save the kernel version which was booted, only the entry. There is nothing in the description to hint this is anything more than a cosmetic change; But, I will see when I test it...

I've changed the default bootloader to grub2 as we speak. I know it works for what I need (for most boots), and if I need the versatility of rEFInd, it is behind a simple visit to the BIOS, after all (EDIT: and I've installed a few grub themes to test some for some geeky bootl0ad3r eye candy later on...).

Last edited by Wild Penguin (2020-09-03 17:10:34)

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#6 2020-09-04 15:34:53

Wild Penguin
Member
Registered: 2015-03-19
Posts: 186

Re: Setting default kernel flavour to boot with rEFInd (1stwprbm) [SOLVED]

Disabling the folding allows refind to remember the Kernel version. Of course the menu is a bit cluttered now, but this is exactly what I need for my use case. Marked as [SOLVED]!

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