Another "Error 21: Cannot find Hard Disk" error

[Ubuntiac]

Hi everyone,

I've got Grub booting just fine, which also boots Kubuntu 8.10 fine as well (on HD1,0). Trouble is that my (*shudder*) XP install (which was installed before Kubuntu) is just coming up with an error 21.

I suspect this has to do with the fact that it's on hd2,1 not hd0,0, but wierdly enough, when I installed XP, it only seemed to be able to see hd2. Mapping is set to swap hd 0 and 2 though.


Grub and then root (hd0,0) it also returns error 21 "Selected Disk does not Exist."
find /boot/grub/stage 1 returns "Error 15: File not found"
QTparted sees all drives and partitions perfectly.


The possible only thing I can see is that Ubuntu is identifying drives by UUID whereas XP is identifying by (HDx,y).

Full Menu.lst is attached. Abbreviated version without old kernels is below.

Thanks for helping to make such a supportive and helpful community! :)


title Ubuntu 8.10, kernel 2.6.27-10-generic
kernel /boot/vmlinuz-2.6.27-10-generic root=UUID=ec5b2f27-9e76-47e4-81f1-7a2eae4d964d ro quiet splash
initrd /boot/initrd.img-2.6.27-10-generic

title Ubuntu 8.10, kernel 2.6.27-10-generic (recovery mode)
kernel /boot/vmlinuz-2.6.27-10-generic root=UUID=ec5b2f27-9e76-47e4-81f1-7a2eae4d964d ro single
initrd /boot/initrd.img-2.6.27-10-generic

### END DEBIAN AUTOMAGIC KERNELS LIST

title Other operating systems:
root

title Microsoft Windows XP Home Edition
root (hd2,1)
map (hd2) (hd0)
map (hd0) (hd2)
chainloader +1
savedefault
makeactive

[logos34]

post your

sudo fdisk -l


find /boot/grub/stage 1 returns "Error 15: File not found"

actually should be find /boot/grub/stage1 (no space) -- but maybe that's just a typo in your post

you might try:


title Microsoft Windows XP Home Edition
root (hd1,1)
map (hd1) (hd0)
map (hd0) (hd1)
chainloader +1
savedefault
makeactive

[Ubuntiac]

Thanks Logos34,

I'll give that a try now.

Output of fdisk -l is:



Disk /dev/sda: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xdebf17c9

Device Boot Start End Blocks Id System
/dev/sda1 * 1 11473 92156841 83 Linux
/dev/sda2 12745 24321 92992252+ 7 HPFS/NTFS
/dev/sda3 11474 12744 10209307+ 82 Linux swap / Solaris

Partition table entries are not in disk order

Disk /dev/sdb: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xce3eaaa7

Device Boot Start End Blocks Id System
/dev/sdb1 * 1 3517 28250271 83 Linux
/dev/sdb3 3518 24321 167108130 83 Linux

Disk /dev/sdc: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x2d782d78

Device Boot Start End Blocks Id System
/dev/sdc1 1 21597 173477871 83 Linux
/dev/sdc2 * 21598 24321 21880530 7 HPFS/NTFS

[Ubuntiac]

Beautiful.

Going with hd1,1 did the trick. Many thanks!

[logos34]

glad to hear it's fixed! enjoy