Arch Linux

jackrabbit

Member

From: Champaign/Urbana

Registered: 2012-01-28

Posts: 4

Can't boot after system update: unknown filesystem type

After running a system update, including updating the kernel, I can't boot to the new kernel.

On booting, grub loads the kernel image, runs/loads udev, but then fails to mount the root partition with error:

mount: unknown filesystem type 'ext4'

I have tried reinstalling the 'linux' package via packman several times, also trying the --recursive argument to make sure all my dependencies were there, and after days of googling and tweaking my system, I'm at a loss.

Thank goodness I happened to keep a spare kernel laying around in /boot.

Thanks in advance.

Last edited by jackrabbit (2012-03-22 23:25:28)

slytux

Member

From: New York

Registered: 2010-09-25

Posts: 139

Re: Can't boot after system update: unknown filesystem type

The last kernel I can successfully boot is 3.2.11-ARCH otherwise it gets stuck on a black screen.  Does anyone know what changed?

MisterAnderson

Member

Registered: 2011-09-04

Posts: 285

Re: Can't boot after system update: unknown filesystem type

I'm running 3.2.12-1-ARCH fine. Maybe try added ext4 to your MODULES line in /etc/mkinitcpio.conf and recompile it with #mkinitcpio -p linux

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spark666

Member

Registered: 2011-05-23

Posts: 137

Re: Can't boot after system update: unknown filesystem type

ext4 support must be build-in into kernel,not as module,because you first boot from filesystem,and then it loads the modules

MisterAnderson

Member

Registered: 2011-09-04

Posts: 285

Re: Can't boot after system update: unknown filesystem type

The OP can read their partition initially though, it's only after udev that they can't.

Also, try adding "rootfstype=ext4" to your grub kernel line. Is your /boot on a separate partition or part of your / partition?

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