On 13/11/11 17:12, Bruce Dubbs wrote:
Andrew Benton wrote:
On Sun, 13 Nov 2011 10:36:34 +0000
spiky<[email protected]> wrote:
Ok I used grub prompt it showed the usb drive
hd0,msdos1(LFS-7.0),2(swap),3(home).
then entered set root=(hd0,msdos)
That seems right. The msdos part is the boot record type, not a
partition type,
linux /boot/vmlinux-3.1-7.0 (it found with tab)root=/devsda1
Is there a missing / or just a typo? Should be /dev/sda1
boot
i get
"no filesystem could mount root tried ext 3 ,2, 4 etc
also Kernel panic not syncing VFS unable to mount root fs on unknown
block (8.1).
When you have a problem with a lot of new things, isolate the new from
the old. I recommend going back to a ext3 partition until you get it
working.
This is the same as I get when I let it boot as normal for this drive.
That looks like a kernel panic, which is good because it means you've
got past the BIOS and grub.
Right.
It
could also be that the kernel config is fine but you've passed it the
wrong root= option on the grub command line.
That would be my thought too.
I'm pretty sure I'd get a
similar looking kernel panic if I tried to boot my kernel with root=
pointing to my swap partition. Another possibility is that the kernel
sees the partition as /dev/sdb1 or /dev/hdc1 or some such. There's no
way to be sure other than to try all the combinations you can think of
and see what works. If none of them work then the problem is probably
with your kernel config so you'll have to work on that recompile your
kernel until you get one that boots.
BTW, the kernel doesn't understand root=UUID=uuid. You have to have a
initrd for that. I'm not sure if the kernel understands
root=LABEL=label or not.
Just remember that grub's root and the kernel's root are not, in
general, the same thing, although they could point to the same place.
-- Bruce
Ok just found a fix fstab
# Begin /boot/grub/grub.cfg
set default=0
set timeout=5
insmod ext2
set root=(hd0,1)
menuentry "GNU/Linux, Linux 3.1-lfs-7.0" {
linux /boot/vmlinuz-3.1-lfs-7.0 root=/dev/sdc1 *rootdelay=30 ro*
}
any thoughts I will play with fstab, The idea is waiting for the usb to
load (google search)
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