VFS: cannot open root device "sda1" or unknown-block(2,0)

elninio · 10-26-2008, 03:35 PM

Im on a t61 laptop - i've just finished installing LFS

When I try to boot I get this error:

Code:

http://www.linuxquestions.org/questions/linux-general-1/kernel-panic-not-syncing-vfs-unable-to-mount-root-fs-on-unkown-block32-414387/

I configure the kernel according to this:

Code:

http://www.linuxfromscratch.org/lfs/view/stable/chapter08/kernel.html

I've enabled 100% of the things in file system, and in filesystem ( the ext2,ext3 stuff) ...

... but I still continue to get this kernel panic error and VFS: cannot open root device "sda1" or unknown-block(2,0).

I'm just trying to get a bootable kernel - what can I change in order to get this working - what kernel configuration must I enable in order to get my system to boot?

pingu · 10-28-2008, 03:57 PM

I can't tell you what to do, just try to push you in the right direction:
That message is what I get when booting without a correct initrd.
It meams that to access the disk some special driver is needed, that's why you need an inird.img (one reason at least).
Unfortunately, I have no idea how to create them but I think that's what you should look at. ("sda1" tells me it's not an ide-disk, probably sata. That's the driver that's needed.)

elninio · 10-29-2008, 04:05 PM

Quote:

Originally Posted by pingu

I can't tell you what to do, just try to push you in the right direction:
That message is what I get when booting without a correct initrd.
It meams that to access the disk some special driver is needed, that's why you need an inird.img (one reason at least).
Unfortunately, I have no idea how to create them but I think that's what you should look at. ("sda1" tells me it's not an ide-disk, probably sata. That's the driver that's needed.)

i tried rebooting the machine from my usb stick and it worked, i then modified the config file to say "hda0" instead of sda0 , even though my drive is recognized as sda0. The convention must be hda for all hard disk. Also I think hda or sda is deprecated (one of the two).