grub: savedefault and boot once for F12
sean darcy
seandarcy2 at gmail.com
Sat May 8 14:11:41 UTC 2010
I have an old F9 production remote server. I put in a new hard disk -
sdb - and installed F12.
I want to be able to boot from sda to both my old trusted F9 and the new
F12. But I can't boot to F12.
grub can find the F12 kernel and initrd:
grub> find /vmlinuz-2.6.31.5-127.fc12.i686.PAE
find /vmlinuz-2.6.31.5-127.fc12.i686.PAE
(hd1,0)
grub> find /initramfs-2.6.31.5-127.fc12.i686.PAE.img
find /initramfs-2.6.31.5-127.fc12.i686.PAE.img
(hd1,0)
This is a remote server. And I want to make sure it's running
_something_.
I've set up grub.conf with fallback and savedefault, as you can see:
# grub.conf generated by anaconda
.........................
#boot=/dev/sda
default=saved
# default=0
fallback 0 1
timeout=5
title Fedora (2.6.27.25-78.2.56.fc9.i686)
root (hd0,0)
kernel /vmlinuz-2.6.27.25-78.2.56.fc9.i686 ro root=/dev/VolGroup00/LogVol00
initrd /initrd-2.6.27.25-78.2.56.fc9.i686.img
savedefault
title Fedora (2.6.27.24-78.2.53.fc9.i686)
root (hd0,0)
kernel /vmlinuz-2.6.27.24-78.2.53.fc9.i686 ro root=/dev/VolGroup00/LogVol00
initrd /initrd-2.6.27.24-78.2.53.fc9.i686.img
title Fedora 12 (2.6.31.5-127.fc12.i686.PAE)
root (hd1,0)
kernel /vmlinuz-2.6.31.5-127.fc12.i686.PAE ro
root=/dev/mapper/vg_server-lv_root LANG=en_US.UTF-8
SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us
initrd /initramfs-2.6.31.5-127.fc12.i686.PAE.img
savedefault 0
And grub does find the kernel and initrd on (hd1,0)
grub> find /vmlinuz-2.6.31.5-127.fc12.i686.PAE
find /vmlinuz-2.6.31.5-127.fc12.i686.PAE
(hd1,0)
grub> find /initramfs-2.6.31.5-127.fc12.i686.PAE.img
find /initramfs-2.6.31.5-127.fc12.i686.PAE.img
(hd1,0)
I then run "savedefault --default=2 --once" from the grub command line,
and reboot.
And it keeps booting F9. Any suggestions appreciated.
sean
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