Re: Dual boot with CentOS

Nolan flopped in chair, hunched shoulders, and pecked out:
I have installed CentOS 5.2 on a second hard drive and choosing no when
asking to setup grub on my /dev/hda, leaving my Ubuntu grub intact, now
how do I add CentOS to grub in Ubuntu? My existing grub menu.1st file
looks like this...

title Ubuntu 8.10, kernel 2.6.27-13-generic
root (hd0,3)
kernel /boot/vmlinuz-2.6.27-13-generic root=/dev/sda4 ro quiet splash
initrd /boot/initrd.img-2.6.27-13-generic

title Ubuntu 8.10, kernel 2.6.27-13-generic (recovery mode)
root (hd0,3)
kernel /boot/vmlinuz-2.6.27-13-generic root=/dev/sda4 ro single
initrd /boot/initrd.img-2.6.27-13-generic

Also, my system looks like this....

robert@columbus:~$ fdisk -l

Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0000f444

Device Boot Start End Blocks Id System
/dev/sda1 * 1 129 1036161 82 Linux swap / Solaris
/dev/sda2 130 3316 25599577+ 5 Extended
/dev/sda3 6504 19457 104053005 83 Linux
/dev/sda4 3317 6503 25599577+ 83 Linux
/dev/sda5 130 3316 25599546 83 Linux

Partition table entries are not in disk order

Disk /dev/sdb: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x212d5ea7

Device Boot Start End Blocks Id System
/dev/sdb1 * 1 5099 40957686 83 Linux
/dev/sdb2 5100 19457 115330635 83 Linux

I tried the following added to the end of menu.1st, but get an error -
invalid or unsupported executable format...

title CentOS 5.2
root (hd1,0)
kernel /boot/vmlinuz-2.6.18-92.el5xen root=/dev/sdb1 ro quiet splash
initrd /boot/initrd-2.6.18-92.el5xen.img

I've tried several googled variations using 'makeactive' and
'chainloader +1', but nothing works yet.

Hi Robert-
I have been told not to post more than once, but "What The Hey"
I might be wrong, I believe the title line for CentOS needs a kernel
specified.

later
nolan


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