Hi I would like to link to this thread as an on going problem that I,m trying resolve. I have tried every combination with fstab & grub.cfg and installing grub. I can boot lfs if I put it as the only drive in laptop, But if i connect it as usb even as the only drive usb and set fstab grub.cfg as sda it will not load. I,m now thinking that I have missed something which lets it find usb drives. The laptop will boot from usb as there is another drive which boots. Need some help here plz

Hi,

What's the partitioning scheme like? Is the first partition bootable? Are the partitions set up right in fstab?

Some loose thoughts...

Thor

It will boot if it,s fitted in laptop, everything setup for sda works fine, if i fit it as the only drive but usb same setup it wont boot fdisk -l shows it as sda. I have selected make partition bootable with disk utility in Ubuntu but still no joy.

Hi,

You don't mention this, but have you already tried Larry Webb's advice from the other thread?

Using UUID's instead of /dev/sdxy makes things more flexible.

Hope this helps.

Hi drunna I did try all suggestions that I,m given. at the moment after going through I dont know how many web sites. Any way I have now tried booting from grub prompt, which dose find the vmlinux- file but get an error on "filesystem could not mount and kernel panic VFS fs on unkown block". This is the same errors I get when trying to boot it normally.
Bearing in mind it will boot when set on IDE of laptop.
I did recompile the kernel again checking for any sata drive stuff and usb stuff and ext4 fs stuff. So is this looking like a Grub problem or Kernel???
I have posted to lfs-support as well

Ok I seemed to have solved the problem I added rootdelay to grub.cfg. The reason behind it is so grub can wait for the usb to load

1 members found this post helpful.

Thanks spiky0011!!! I learned something here, you brightened up my day (and week)

Thor

i,m glad i helped