booting problem

[Barry Brimer]

On Sun, 1 Feb 2009, Joy Methew wrote:

> hello all,
> i have two hadr disk sda and hda.
> I have installed Windows xp on a seperat hard drive(on sda).  I installed
> the new hard drive and then installed Redhat linux 5 on the new drive(hda).
> i set the prority on other(xp) bydefault.
> redhat is running fine but when i enter on other it`s not running.
> i m sending out put of "fdisk -l" and grub.conf.
>
> thanks
> [root at localhost ~]# fdisk -l
>
> Disk /dev/hdc: 80.0 GB, 80026361856 bytes
> 255 heads, 63 sectors/track, 9729 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>
>   Device Boot      Start         End      Blocks   Id  System
> /dev/hdc1               2        5100    40957717+   f  W95 Ext'd (LBA)
> /dev/hdc2   *        5101        8924    30716280   83  Linux
> /dev/hdc3            8925        9179     2048287+  82  Linux swap / Solaris
> /dev/hdc5               2        5100    40957686    7  HPFS/NTFS
>
> Disk /dev/sda: 80.0 GB, 80000000000 bytes
> 255 heads, 63 sectors/track, 9726 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>
>   Device Boot      Start         End      Blocks   Id  System
> /dev/sda1   *           1        2065    16587081    c  W95 FAT32 (LBA)
> /dev/sda2            2066        9725    61528950    f  W95 Ext'd (LBA)
> /dev/sda5            2066        4615    20482843+   b  W95 FAT32
> /dev/sda6            4616        7165    20482843+   7  HPFS/NTFS
> /dev/sda7            7166        9725    20563168+   b  W95 FAT32
>
>
>
> # grub.conf generated by anaconda
> #
> # Note that you do not have to rerun grub after making changes to this file
> # NOTICE:  You do not have a /boot partition.  This means that
> #          all kernel and initrd paths are relative to /, eg.
> #          root (hd0,1)
> #          kernel /boot/vmlinuz-version ro root=/dev/hdc2
> #          initrd /boot/initrd-version.img
> #boot=/dev/hdc
> default=1
> timeout=5
> splashimage=(hd0,1)/boot/grub/splash.xpm.gz
> hiddenmenu
> title Red Hat Enterprise Linux Server (2.6.18-8.el5)
>        root (hd0,1)
>        kernel /boot/vmlinuz-2.6.18-8.el5 ro root=LABEL=/ rhgb quiet
>        initrd /boot/initrd-2.6.18-8.el5.img
> title Other
>        rootnoverify (hd0,4)
>        chainloader +1

I believe your /boot/grub/device.map will need a line that says :

(hd1)     /dev/sda

and the grub.conf statement called 'Other' would need to say:

rootnoverify (hd1,6)
chainloader +1

Although I have never not created partitions 3 and 4 on my disk .. so I 
don't know how their absence is handled.

You also may wish to look at Super Grub Disk 
<http://www.supergrubdisk.org/>

Barry