Tech Support Forum - View Single Post - [SOLVED] Cannot mount selected partition.

Guardian-Mage · 12-17-2007, 07:05 AM

I have seen this problem. If I understand you, Ubuntu is on the second hard disk. So is Grub. For some reason GRUB doesn't configure itself correct when you change it's location. GRUB always refers to itself as on hd0. So when it is on the second partition, instead of booting Ubuntu from hd1 which is the first hard disk, it should boot to hd0, which is the hard disk that GRUB resides on.

1. Insert Live CD
2. Boot to Live CD
3. Open a terminal
4. type sudo gedit
5. GEdit will open
6. Open File > Ubuntu Partition(NOT THE LIVE CD FILE SYSTEM)(Ubuntu Partition should be /media/sdx) > Ubuntu File System /boot/grub/menu.lst
7. Go to the bottom
8. Your Ubuntu Entry should resemble this:

> title Ubuntu, kernel 2.6.20-16-generic
> root (hd1,1)
> kernel /boot/vmlinuz-2.6.20-16-generic
> root=UUID=3adabece-a770-49a0-bf76-766193ae1204 ro single
initrd /boot/initrd.img-2.6.20-16-generic

9. It may be different, but change "root (hd1,1)" to "root (hd0,<Your partition here>)

12-17-2007, 07:05 AM	#4 (permalink)
Guardian-Mage Registered User Join Date: Dec 2007 Posts: 7 OS: Windows XP SP 2, Ubuntu Linux 7.10, Mac OS 10.5, BLFS	Re: Cannot mount selected partition. I have seen this problem. If I understand you, Ubuntu is on the second hard disk. So is Grub. For some reason GRUB doesn't configure itself correct when you change it's location. GRUB always refers to itself as on hd0. So when it is on the second partition, instead of booting Ubuntu from hd1 which is the first hard disk, it should boot to hd0, which is the hard disk that GRUB resides on. 1. Insert Live CD 2. Boot to Live CD 3. Open a terminal 4. type sudo gedit 5. GEdit will open 6. Open File > Ubuntu Partition(NOT THE LIVE CD FILE SYSTEM)(Ubuntu Partition should be /media/sdx) > Ubuntu File System /boot/grub/menu.lst 7. Go to the bottom 8. Your Ubuntu Entry should resemble this: > title Ubuntu, kernel 2.6.20-16-generic > root (hd1,1) > kernel /boot/vmlinuz-2.6.20-16-generic > root=UUID=3adabece-a770-49a0-bf76-766193ae1204 ro single initrd /boot/initrd.img-2.6.20-16-generic 9. It may be different, but change "root (hd1,1)" to "root (hd0,<Your partition here>)