which grub to edit?
Thufir
hawat.thufir at gmail.com
Fri Jun 29 08:09:24 UTC 2007
On Thu, 28 Jun 2007 07:33:14 -0700, Thufir wrote:
> pardon if I posted this before. I was working on grub last night. Win2k
> and Fedora 7 are on sda (hda) while FC3 is on sdb (hdb). The MBR on sda
> is being used, I believe.
>
> Which grub do I edit to get all OS's booting? I tried a few variations,
> mucking with the one in /boot/grub/... from FC3, but wasn't able to hit
> on the correct combination.
Got it, mostly :)
Down the road, I'd like /boot/grub/... from Fedora 7 to be the grub file
use, but, eh, no big deal at the moment :)
[root at localhost ~]#
[root at localhost ~]# cat /mnt/sdb1/grub/grub.conf -n
1 # grub.conf generated by anaconda
2 #
3 # Note that you do not have to rerun grub after making changes to
this file
4 # NOTICE: You have a /boot partition. This means that
5 # all kernel and initrd paths are relative to /boot/, eg.
6 # root (hd1,0)
7 # kernel /vmlinuz-version ro root=/dev/VolGroup01/
LogVol00
8 # initrd /initrd-version.img
9 #boot=/dev/hda
10 default=0
11 timeout=15
12 splashimage=(hd1,0)/grub/splash.xpm.gz
13 #hiddenmenu
14 title Fedora Core (2.6.9-1.667)
15 root (hd1,0)
16 kernel /vmlinuz-2.6.9-1.667 ro root=/dev/VolGroup01/
LogVol00 rhgb quiet
17 initrd /initrd-2.6.9-1.667.img
18 title Other
19 rootnoverify (hd0,0)
20 chainloader +1
21
22 title Fedora (2.6.21-1.3228.fc7)
23 root (hd0,1)
24 kernel /vmlinuz-2.6.21-1.3228.fc7 ro root=LABEL=/ rhgb
quiet
25 initrd /initrd-2.6.21-1.3228.fc7.img
[root at localhost ~]#
[root at localhost ~]# cat /etc/fstab
LABEL=/ / ext3 defaults 1
1
LABEL=/boot /boot ext3 defaults 1
2
tmpfs /dev/shm tmpfs defaults 0
0
devpts /dev/pts devpts gid=5,mode=620 0
0
sysfs /sys sysfs defaults 0
0
proc /proc proc defaults 0
0
/dev/VolGroup00/LogVol01 swap swap defaults
0 0
/dev/VolGroup01/LogVol01 swap swap defaults
0 0
/dev/sda1 /mnt/sda1 ntfs-3g users,rw 0
0
/dev/sdb1 /mnt/sdb1 ext3 users,rw 0
0
[root at localhost ~]#
[root at localhost ~]# mount
/dev/mapper/VolGroup00-LogVol00 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/sda2 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
/dev/sda1 on /mnt/sda1 type fuseblk
(rw,nosuid,nodev,noexec,noatime,allow_other,blksize=4096)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
/dev/sdb1 on /mnt/sdb1 type ext3 (rw,noexec,nosuid,nodev)
[root at localhost ~]#
[root at localhost ~]# fdisk
Usage: fdisk [-l] [-b SSZ] [-u] device
E.g.: fdisk /dev/hda (for the first IDE disk)
or: fdisk /dev/sdc (for the third SCSI disk)
or: fdisk /dev/eda (for the first PS/2 ESDI drive)
or: fdisk /dev/rd/c0d0 or: fdisk /dev/ida/c0d0 (for RAID devices)
...
[root at localhost ~]#
[root at localhost ~]# cat /etc/fedora-release
Fedora release 7 (Moonshine)
[root at localhost ~]#
[root at localhost ~]# date
Fri Jun 29 01:07:34 PDT 2007
[root at localhost ~]#
[root at localhost ~]#
(just random trial and error with different combinations of bootloader +1
with no idea of what it really does.)
Thanks,
Thufir
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