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#1 2016-08-19 16:17:39

angelo
Member
Registered: 2015-12-28
Posts: 38

[SOLVED] No boot from installed system after bios reset

Hi,

As part of a diagnostic for battery degradation, dell had me reset the bios options.  When the process ended, my laptop will not boot into arch.
Bios sees the boot partition in the boot sequence, but trying to boot from the installed system fails: the laptop just ignores it and boots to windows.
I have no problem booting arch from USB.

This is a dell XPS 13 9350.

I tried toggling secure boot in bios with no effect.  I don't know that anything has changed in the installed system, but can access it by booting from USB.

output of sudo parted /dev/nvme0n1 print

Model: Unknown (unknown)
Disk /dev/nvme0n1: 256GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Warning: failed to translate partition name
Number  Start   End     Size    File system  Name                          Flags
 1      1049kB  525MB   524MB   fat32        EFI system partition          boot, esp
 2      525MB   660MB   134MB                Microsoft reserved partition  msftres
 3      660MB   67.8GB  67.1GB  ntfs         Basic data partition          msftdata
 6      67.8GB  88.7GB  21.0GB  btrfs
 7      88.7GB  244GB   155GB   btrfs
 4      244GB   245GB   893MB   ntfs                                       hidden, diag
 5      245GB   256GB   11.1GB  ntfs                                       hidden, diag

Last edited by angelo (2016-08-25 19:22:33)

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#2 2016-08-19 16:31:22

Head_on_a_Stick
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From: London
Registered: 2014-02-20
Posts: 7,732
Website

Re: [SOLVED] No boot from installed system after bios reset

Your NVRAM entries have probably been cleared.

Check the entries with:

# efibootmgr

Simply re-installing your bootloader should create a new entry.

For example, for systemd-boot use:

# bootctl install

Are you infected with Wetiko?

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#3 2016-08-19 17:38:00

angelo
Member
Registered: 2015-12-28
Posts: 38

Re: [SOLVED] No boot from installed system after bios reset

Thanks! I'll try to look into this.

I should have mentioned, the contents of the boot partition do not seem to have changed at any time.

% efibootmgr 
BootCurrent: 0004
Timeout: 0 seconds
BootOrder: 0004,0002,0000
Boot0000* Windows Boot Manager
Boot0002* UEFI: PM951 NVMe SAMSUNG 256GB, Partition 1
Boot0004* UEFI: SMI USB DISK 1100, Partition 1

If the USB is not present, it boots directly to Windows, despite the BootOrder.

Last edited by angelo (2016-08-19 17:43:01)

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#4 2016-08-19 18:00:48

angelo
Member
Registered: 2015-12-28
Posts: 38

Re: [SOLVED] No boot from installed system after bios reset

I mounted the root partition in SSD and the boot partition in SSD/boot.   After chroot, I get the following errors:

#sudo chroot SSD

# efibootmgr 
efibootmgr: EFI variables are not supported on this system.

# bootctl  status
Failed to open file system "/boot": No such file or directory

# ls -l /boot/
drwxr-xr-x 6 root root     4096 Jul 17 21:01 EFI
drwxr-xr-x 2 root root     4096 Oct 14  2015 en-us
-rwxr-xr-x 1 root root 21694291 Aug 11 17:11 initramfs-linux-fallback.img
-rwxr-xr-x 1 root root 19184201 Dec 29  2015 initramfs-linux-mainline-fallback.img
-rwxr-xr-x 1 root root  4463267 Dec 29  2015 initramfs-linux-mainline.img
-rwxr-xr-x 1 root root  6792248 Aug 11 17:11 initramfs-linux.img
-rwxr-xr-x 1 root root   947712 Jul 22 05:02 intel-ucode.img
drwxr-xr-x 3 root root     4096 Dec 27  2015 loader
-rwxr-xr-x 1 root root  4699936 Aug  8 13:07 vmlinuz-linux
-rwxr-xr-x 1 root root  4341264 Dec 27  2015 vmlinuz-linux-mainline

I'm not sure how to proceed, or what I'm missing.

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#5 2016-08-19 18:05:39

Scimmia
Fellow
Registered: 2012-09-01
Posts: 11,559

Re: [SOLVED] No boot from installed system after bios reset

Sounds like the "Legacy BIOS" option is selected.

Wait, nevermind, I missed the post just before the last one.

Last edited by Scimmia (2016-08-19 18:06:28)

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#6 2016-08-19 18:12:09

angelo
Member
Registered: 2015-12-28
Posts: 38

Re: [SOLVED] No boot from installed system after bios reset

Some progress:  I do not chroot, but instead use

# bootctl -path SSD/boot

there is no error. bootctl status shows that /EFI/systemd/systemd-bootx64.efi and /EFI/BOOT/bootx64.efi are upgraded to version 231.
I'll try to reboot.

[UPDATE:] This did the trick. the bios had an additional "Linux Boot" under boot options, which works. For future reference, the effective steps were:

# mount /dev/nvme0n1p6 SSD
# mount /dev/nvme0n1p1 SSD/boot
# bootctl -path SSD/boot install

Last edited by angelo (2016-08-19 18:19:13)

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#7 2016-08-19 18:14:53

Head_on_a_Stick
Member
From: London
Registered: 2014-02-20
Posts: 7,732
Website

Re: [SOLVED] No boot from installed system after bios reset

angelo wrote:
#sudo chroot SSD

# efibootmgr 
efibootmgr: EFI variables are not supported on this system.

# bootctl  status
Failed to open file system "/boot": No such file or directory

Use `arch-chroot` rather than `chroot`

Did you boot the ISO in UEFI mode?

You can mount efivarfs manually, as per https://wiki.archlinux.org/index.php/Un … t_efivarfs

Alternatively, make use of the removable loader location by copying the .efi loader for your bootmanager to /boot/EFI/BOOT/BOOTX64.EFI (BOOTIA32.EFI for 32-bit systems).

See http://www.rodsbooks.com/efi-bootloader … ive-naming for more on this.

Are you infected with Wetiko?

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#8 2016-08-19 18:15:32

Head_on_a_Stick
Member
From: London
Registered: 2014-02-20
Posts: 7,732
Website

Re: [SOLVED] No boot from installed system after bios reset

angelo wrote:

Some progress:  I do not chroot, but instead use

# bootctl -path SSD/boot

there is no error. bootctl status shows that /EFI/systemd/systemd-bootx64.efi and /EFI/BOOT/bootx64.efi are upgraded to version 231.
I'll try to reboot.

There will be no fresh NVRAM entry unless efivarfs is mounted before using `bootctl`

Are you infected with Wetiko?

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#9 2016-08-19 18:25:21

angelo
Member
Registered: 2015-12-28
Posts: 38

Re: [SOLVED] No boot from installed system after bios reset

The ISO was indeed in UEFI mode.  I'll read up on efivars: I do not know enough about EFI to tell whether the approach you give has a different/better effect than what I did.  At the moment the system is functional by the alternative from my previous post.

Thanks for the help!

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#10 2016-08-19 18:27:46

Head_on_a_Stick
Member
From: London
Registered: 2014-02-20
Posts: 7,732
Website

Re: [SOLVED] No boot from installed system after bios reset

angelo wrote:

At the moment the system is functional by the alternative from my previous post.

The `bootctl` command copied the systemd-boot .efi loader to the removable loader location so your firmware must be booting that automatically.

Just out of interest, can we see the new output of:

# efibootmgr -v

Are you infected with Wetiko?

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#11 2016-08-24 23:37:52

angelo
Member
Registered: 2015-12-28
Posts: 38

Re: [SOLVED] No boot from installed system after bios reset

output as requested:

 % efibootmgr -v
BootCurrent: 0001
Timeout: 0 seconds
BootOrder: 0001,0002,0004,0000
Boot0000* Windows Boot Manager	HD(1,GPT,39129565-4fc7-4272-852a-80b2b9275441,0x800,0xfa000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.4.b.3.4.4.d.4.7.9.5.}....................
Boot0001* Linux Boot Manager	HD(1,GPT,39129565-4fc7-4272-852a-80b2b9275441,0x800,0xfa000)/File(\EFI\systemd\systemd-bootx64.efi)
Boot0002* UEFI: PM951 NVMe SAMSUNG 256GB, Partition 1	HD(1,GPT,39129565-4fc7-4272-852a-80b2b9275441,0x800,0xfa000)/File(EFI\Microsoft\Boot\bootmgfw.efi)..BO
Boot0004* UEFI: SMI USB DISK 1100, Partition 1	PciRoot(0x0)/Pci(0x14,0x0)/USB(0,0)/HD(1,MBR,0x4294967233,0xa4,0x14000)..BO

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