Hi, Usually the command
find /boot/grub/stage1 will give the disk were grub stage1 is present ------------------------------------ grub> find /boot/grub/stage1 (hd0,1) (hd0,2) (hd0,7) ------------------------------------ Are you able to get that ? Also in sda I can see only 4 partitions, so there will not be any (hd0,4) Like : ------------------------------------------ /dev/sda1 (hd0,0) /dev/sda2 (hd0,1) /dev/sda5 (hd0,2) /dev/sda6 (hd0,3) ------------------------------------------ Is root (hd0,3) is working for you ? On Fri, Feb 27, 2009 at 5:16 PM, Michael <msd4...@yahoo.com> wrote: > > > > I'm going through Linux From Scratch v6.4, and I'm on Chapter 8.4. > > > Currently, > > I'm running Linux completely off of an external hard drive, while I'm also > > building my Linux From Scatch build onto a seperate partition on that disk. > > The > > laptop already has one hard drive in it, but I'm not really touching it. > > > > > > Here's what happens: > > > > > > grub> root (hd0,4) > > > > > > Error 21: Selected disk does not exist > > > > > > As I said, we're on the external hard drive, sda. I'm not really sure > > > what > > sda2 is, so I've just sorta been ignoring it. sda5 is the LFS build, while > > sda6 > > is the host system. I'm completely ignoring sdb1. > > > > your kernel seems to see the usb-disk first, the builtin disk second. > > thus after booting you have sdA external and sdB internal. > > > > don't assume /dev/sda=(hd0) and /sev/sdb=(hd1)!! > > > > simple trick to check how grub maps your drives: > > in the grub console type "root (hd0," and now the TAB key. grub shows > > all partitions on hd0. now repeat with "root (hd1,"+TAB to see hd1. > > > > compare the output with what you get from "fdisk -l". > > > > i guess, you'll see you have to use "root (hd1,4)" to specify your > > external disk. > > > > probably your current kernel has builtin support for IDE/ATA only, > > loading SATA drivers as modules, but AFTER usb support. thus your > > external usb disk is recognised first, the SATA second. > > > > i'd try to fix that first! it's more conveniant to have builtin before > > external devices. > > > > > > tobias > > > I've tried the tab thing, and I forgot to mention, it isn't working like it's > suppose to. I type root (hd[tab], and nothing appears, it just bumps me down > to the next line. Same thing happens when I even simply type root ([tab]. > It's like it doesn't see any disk on my computer. > > As for the external being sda... When I was running the liveCD, the internal > was sda, and the external was sdb. The only flipped when I installed it to > the disk. > > Thanks. > > > > > -- > http://linuxfromscratch.org/mailman/listinfo/lfs-support > FAQ: http://www.linuxfromscratch.org/lfs/faq.html > Unsubscribe: See the above information page -- --------------------- With regards, Unni "A candle loses nothing by lighting another candle" -- http://linuxfromscratch.org/mailman/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/lfs/faq.html Unsubscribe: See the above information page
