grub> find Questions...

linus72 · 05-07-2009, 08:50 PM

I tried the command "grub> find /boot/grub/menu.lst" and get nothing..

Am I doing the command wrong?
I am in Ubuntu-8.04

I was trying to use grub to see what grub identifies my usb as.
I at least expected it to find something...

Tried find (HD0,0) /boot/grub/menu.lst ,etc,etc

How do I find out how grub can identify my usb?

rayfordj · 05-07-2009, 08:58 PM

hope this helps...
when i've had little success with grub's find command, i resort to grub's cat to help me locate what i'm after (typically the /boot filesystem to try to manually bring up a problem system).

Code:

grub> cat (hd0,0)/<tab><tab>
grub> cat (hd0,1)/<tab><tab>
grub> cat (hd1,0)/<tab><tab>

and so on and so forth...
the double-tab will list files if it can read the filesystem on that particular partition similar to bash tab completion

syg00 · 05-07-2009, 09:59 PM

Try the find as "find /grub/menu.lst"

yancek · 05-07-2009, 10:37 PM

I'm not sure how you used the command but, in Ubuntu you should do "sudo grub", prompted for and enter password, type "grub" get the grub prompt (grub>) and then enter the find command you have above.

You can use the geometry command from the grub prompt to get drive/partition information as seen by grub; example:

grub> geometry (hd0)
drive 0x80: C/H/S = 38792/16/63, The number of sectors = 39102336, /dev/hda
Partition num: 0, Filesystem type is fat, partition type 0xb
Partition num: 2, Filesystem type is ext2fs, partition type 0x83
Partition num: 3, Filesystem type is ext2fs, partition type 0x83
Partition num: 4, Filesystem type unknown, partition type 0x7

If you have multiple hard drives, run the geometry command and increase the number each time until you have listed all drives.