adding additional linux boot entry into grub menu.lst

**armandli** · May 20th, 2008

i am trying to add a newly installed fedora into my ubuntu grub boot list (after changing ubuntu grub as the main grub bootloader), but i'm facing some problems. my first try is basically copying the fedora 9's grub boot item into ubuntu grub menu.lst. it looks somthing like this:

Code:

title Fedora (2.6.25-14.fc9.i686)
	root (hd0,5)
	kernel /boot/vmlinuz-2.6.25-14.fc9.i686 ro root=UUID=7a94bc7e-9e15-4a06-ba25-57e2e1f95e11
	initrd /boot/initrd-2.6.25-14.fc9.i686.img

it doesn't work. the error message is:

cannot open root device UUID=some serial

so second try, i changed it to:

Code:

title Fedora (2.6.25-14.fc9.i686)
	root (hd0,5)
	kernel /boot/vmlinuz-2.6.25-14.fc9.i686 ro root=/dev/sda6
	initrd /boot/initrd-2.6.25-14.fc9.i686.img

same error

third try, i removed the ro, still fails with same error

help

**plucky** · May 20th, 2008

cannot open root device UUID=some serial

Boot into Ubuntu,

Open a terminal

Code:

sudo fdisk -l

that is lowercase L no a 1,and

Code:

ls -l /dev/disk/by-uuid

again a lowercase L not a 1.

Post back to forum.

**armandli** · May 21st, 2008

here are the results of fdisk -l (note i lied, my fedora partition is in sda4, not sda7)

Code:

Disk /dev/sda: 100.0 GB, 100030242816 bytes
255 heads, 63 sectors/track, 12161 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0004f4f0

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        5392    43311208+   7  HPFS/NTFS
Partition 1 does not end on cylinder boundary.
/dev/sda2            5393        8003    20972857+   7  HPFS/NTFS
/dev/sda3            8004       10810    22547227+   5  Extended
/dev/sda4           10811       12161    10851907+  83  Linux
/dev/sda5            9114        9635     4192933+  82  Linux swap / Solaris
/dev/sda6            9636       10810     9438156   83  Linux
/dev/sda7            8004        9113     8916012   83  Linux

here is the result from ls -l /dev/disk/by-uuid

Code:

total 0
lrwxrwxrwx 1 root root 10 2008-05-19 15:22 00f8a48d-5569-4473-bf60-66bc650a01c1 -> ../../sda5
lrwxrwxrwx 1 root root 10 2008-05-19 15:22 21E79ABB2CEB08A4 -> ../../sda2
lrwxrwxrwx 1 root root 10 2008-05-19 15:22 701C64311C63F090 -> ../../sda1
lrwxrwxrwx 1 root root 10 2008-05-19 15:22 75199422-9b98-402e-b437-c54a4569bd6c -> ../../sda6
lrwxrwxrwx 1 root root 10 2008-05-19 15:22 7a94bc7e-9e15-4a06-ba25-57e2e1f95e11 -> ../../sda4
lrwxrwxrwx 1 root root 10 2008-05-19 15:22 f49d29c8-366d-4a18-a155-c6f1ab3c437e -> ../../sda7

though the uuid does match the one i have posted previously for sda4...

**plucky** · May 21st, 2008

my fedora partition is in sda4

Code:

title Fedora (2.6.25-14.fc9.i686)
	root (hd0,3)
	kernel /boot/vmlinuz-2.6.25-14.fc9.i686 ro root=UUID=7a94bc7e-9e15-4a06-ba25-57e2e1f95e11
	initrd /boot/initrd-2.6.25-14.fc9.i686.img

If your Fedora partition is on sda4 then the root (hd0,5) needs to be changed as highlighted above.

Good Luck