Grub error: unknown filesystem for any filesystem

Soukyuu · 2015-10-04 13:52:06

I have searched before posting and closest that came to my issue is this, where the solution was to move the boot partition closer to the start of the disk.
This doesn't apply in my case. In fact, I have a nearly identical partition setup on the PC I'm writing this from and everything works just peachy.

On that other PC, though, GRUB fails to load and falls back to rescue mode with "error: unknown filesystem". It's not the config, since it doesn't even get to displaying the menu.
The partitions and the HDDs are displayed when using ls from the rescue shell, but doing "ls (hdX,msdosY)" shows the same error for any partition (btrfs, ntfs). Inserting those with insmod doesn't seem to make any difference.

This is a bare setup, with only the base + btrfs-progs + grub installed (from chroot) following the wiki.
The partition layout is as follows:
- about 90GB ntfs (windows)
- 20GB btrfs (linux)

This is on a 120GB SSD, BIOS system.
Any idea what GRUB doesn't like?

Head_on_a_Stick · 2015-10-04 14:30:48

Please post the output of:

# parted -l

Soukyuu · 2015-10-04 14:54:26

Model: ATA ST3500418AS (scsi)
Disk /dev/sda: 500GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End    Size   Type     File system  Flags
 1      1049kB  500GB  500GB  primary  ntfs


Model: ATA ST3500418AS (scsi)
Disk /dev/sdb: 500GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End    Size   Type     File system  Flags
 1      1049kB  500GB  500GB  primary  ntfs


Model: ATA CT120BX100SSD1 (scsi)
Disk /dev/sdc: 120GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type     File system  Flags
 1      1049kB  98.6GB  98.6GB  primary  ntfs
 2      98.6GB  120GB   21.5GB  primary  btrfs        boot


Model: SanDisk U3 Cruzer Micro (scsi)
Disk /dev/sdd: 16.0GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system  Name                  Flags
 1      1049kB  16.0GB  16.0GB  fat32        Microsoft Basic Data  msftdata


Model: Generic Flash Disk (scsi)
Disk /dev/sde: 1030MB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type     File system  Flags
 2      88.1kB  32.6MB  32.5MB  primary  fat16        esp

Head_on_a_Stick · 2015-10-04 15:10:54

Sorry, I should have also asked for the content of grub.cfg and the output of:

# lsblk -f

Soukyuu · 2015-10-04 15:25:57

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
insmod part_gpt
insmod part_msdos
if [ -s $prefix/grubenv ]; then
  load_env
fi
if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   set boot_once=true
else
   set default="0"
fi

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
else
  menuentry_id_option=""
fi

export menuentry_id_option

if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    save_env saved_entry
  fi
}

function load_video {
  if [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

if [ x$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod part_msdos 
insmod btrfs
set root='hd2,msdos2'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint-bios=hd2,msdos2 --hint-efi=hd2,msdos2 --hint-baremetal=ahci2,msdos2  c7c9e495-aa41-4c58-b4f0-8f43cdfdd245
else
  search --no-floppy --fs-uuid --set=root c7c9e495-aa41-4c58-b4f0-8f43cdfdd245
fi
    font="/arch_current/usr/share/grub/unicode.pf2"
fi

if loadfont $font ; then
  set gfxmode=auto
  load_video
  insmod gfxterm
  set locale_dir=$prefix/locale
  set lang=en_US
  insmod gettext
fi
terminal_input console
terminal_output gfxterm
if [ x$feature_timeout_style = xy ] ; then
  set timeout_style=menu
  set timeout=5
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
  set timeout=5
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Arch Linux' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-c7c9e495-aa41-4c58-b4f0-8f43cdfdd245' {
	load_video
	set gfxpayload=keep
	insmod gzio
	insmod part_msdos 
	insmod btrfs
	set root='hd2,msdos2'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd2,msdos2 --hint-efi=hd2,msdos2 --hint-baremetal=ahci2,msdos2  c7c9e495-aa41-4c58-b4f0-8f43cdfdd245
	else
	  search --no-floppy --fs-uuid --set=root c7c9e495-aa41-4c58-b4f0-8f43cdfdd245
	fi
	echo	'Loading Linux linux ...'
	linux	/arch_current/boot/vmlinuz-linux root=UUID=c7c9e495-aa41-4c58-b4f0-8f43cdfdd245 rw rootflags=subvol=arch_current  quiet
	echo	'Loading initial ramdisk ...'
	initrd	 /arch_current/boot/initramfs-linux.img
}
submenu 'Advanced options for Arch Linux' $menuentry_id_option 'gnulinux-advanced-c7c9e495-aa41-4c58-b4f0-8f43cdfdd245' {
	menuentry 'Arch Linux, with Linux linux' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-linux-advanced-c7c9e495-aa41-4c58-b4f0-8f43cdfdd245' {
		load_video
		set gfxpayload=keep
		insmod gzio
		insmod part_msdos 
		insmod btrfs
		set root='hd2,msdos2'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd2,msdos2 --hint-efi=hd2,msdos2 --hint-baremetal=ahci2,msdos2  c7c9e495-aa41-4c58-b4f0-8f43cdfdd245
		else
		  search --no-floppy --fs-uuid --set=root c7c9e495-aa41-4c58-b4f0-8f43cdfdd245
		fi
		echo	'Loading Linux linux ...'
		linux	/arch_current/boot/vmlinuz-linux root=UUID=c7c9e495-aa41-4c58-b4f0-8f43cdfdd245 rw rootflags=subvol=arch_current  quiet
		echo	'Loading initial ramdisk ...'
		initrd	 /arch_current/boot/initramfs-linux.img
	}
	menuentry 'Arch Linux, with Linux linux (fallback initramfs)' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-linux-fallback-c7c9e495-aa41-4c58-b4f0-8f43cdfdd245' {
		load_video
		set gfxpayload=keep
		insmod gzio
		insmod part_msdos 
		insmod btrfs
		set root='hd2,msdos2'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd2,msdos2 --hint-efi=hd2,msdos2 --hint-baremetal=ahci2,msdos2  c7c9e495-aa41-4c58-b4f0-8f43cdfdd245
		else
		  search --no-floppy --fs-uuid --set=root c7c9e495-aa41-4c58-b4f0-8f43cdfdd245
		fi
		echo	'Loading Linux linux ...'
		linux	/arch_current/boot/vmlinuz-linux root=UUID=c7c9e495-aa41-4c58-b4f0-8f43cdfdd245 rw rootflags=subvol=arch_current  quiet
		echo	'Loading initial ramdisk ...'
		initrd	 /arch_current/boot/initramfs-linux-fallback.img
	}
}

### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Windows 8 (loader) (on /dev/sdc1)' --class windows --class os $menuentry_id_option 'osprober-chain-7CEE3C4CEE3C00C6' {
	insmod part_msdos 
	insmod ntfs
	set root='hd2,msdos1'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd2,msdos1 --hint-efi=hd2,msdos1 --hint-baremetal=ahci2,msdos1  7CEE3C4CEE3C00C6
	else
	  search --no-floppy --fs-uuid --set=root 7CEE3C4CEE3C00C6
	fi
	drivemap -s (hd0) ${root}
	chainloader +1
}
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  ${config_directory}/custom.cfg ]; then
  source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###

### BEGIN /etc/grub.d/60_memtest86+ ###
### END /etc/grub.d/60_memtest86+ ###

NAME   FSTYPE LABEL UUID MOUNTPOINT
sda                      
└─sda1                   
sdb                      
└─sdb1                   
sdc                      
├─sdc1                   
└─sdc2                   /
sdd                      
├─sdd1                   
└─sdd2                   
sdf                      
└─sdf1                   /tmp/out
sr0                      
loop0

Something I noticed when re-running grub-mkconfig is that it's trying and failing to connect with lvmtad - I'm not using lvm, why would it do that? I can't seem to re-route the output to a file, though.

Head_on_a_Stick · 2015-10-04 15:29:10

Soukyuu wrote:

I can't seem to re-route the output to a file, though.

# grub-mkconfig -o file

EDIT: I see that LVM message also and GRUB will complete without further problems.

Please re-post the `lsblk -f` output with root privileges so the UUIDs show up.

Last edited by Head_on_a_Stick (2015-10-04 15:29:59)

Soukyuu · 2015-10-04 15:31:07

That's the thing, this IS with root privileges.

edit: also I meant the output of "grub-mkconfig -o file", something like "grub-mkconfig -o file > logfile" doesn't seem to work.

edit2: This is the output of lsblk -f when booting from the liveusb (vs the one I posted above, which is from within arch-chroot)

NAME   FSTYPE                        LABEL       UUID                                 MOUNTPOINT
sda    promise_fasttrack_raid_member                                                  
└─sda1 ntfs                          Workflow    5EB8E892B8E869CB                     
sdb    promise_fasttrack_raid_member                                                  
└─sdb1 ntfs                          Data        8CAACDE5AACDCBC0                     
sdc                                                                                   
├─sdc1 ntfs                          System      7CEE3C4CEE3C00C6                     
└─sdc2 btrfs                         Arch        c7c9e495-aa41-4c58-b4f0-8f43cdfdd245 /mnt
sdd    iso9660                       ARCH_201510 2015-10-01-17-08-02-00               
├─sdd1 iso9660                       ARCH_201510 2015-10-01-17-08-02-00               /run/archiso/bootmnt
└─sdd2 vfat                          ARCHISO_EFI 8322-6EAF                            
sdf                                                                                   
└─sdf1 vfat                          GSP1RMCPRXF 3A3B-CDB8                            /tmp/out
sr0                                                                                   
loop0  squashfs                                                                       /run/archiso/sfs/airootfs

Last edited by Soukyuu (2015-10-04 15:37:40)

Head_on_a_Stick · 2015-10-04 15:45:44

Are the subvolume names correct?

Have you tried re-installing GRUB?

Which command did you use to install GRUB?

Soukyuu · 2015-10-04 15:50:55

The subvolume name is correct, the entries also look the same as on my main machine (the subvolume part, not the UUID, obviously).
I did try to re-install grub several times, from chroot with

# grub-install --recheck /dev/sdc

Last edited by Soukyuu (2015-10-04 15:51:20)

Soukyuu · 2015-10-04 18:46:57

Installed syslinux and it boots without a hitch, as expected.
GRUB can go die in a fire for all I care.

Arch Linux

#1 2015-10-04 13:52:06

Grub error: unknown filesystem for any filesystem

#2 2015-10-04 14:30:48

Re: Grub error: unknown filesystem for any filesystem

#3 2015-10-04 14:54:26

Re: Grub error: unknown filesystem for any filesystem

#4 2015-10-04 15:10:54

Re: Grub error: unknown filesystem for any filesystem

#5 2015-10-04 15:25:57

Re: Grub error: unknown filesystem for any filesystem

#6 2015-10-04 15:29:10

Re: Grub error: unknown filesystem for any filesystem

#7 2015-10-04 15:31:07

Re: Grub error: unknown filesystem for any filesystem

#8 2015-10-04 15:45:44

Re: Grub error: unknown filesystem for any filesystem

#9 2015-10-04 15:50:55

Re: Grub error: unknown filesystem for any filesystem

#10 2015-10-04 18:46:57

Re: Grub error: unknown filesystem for any filesystem

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