Bump on this issue again, someone asked ” how to restore my grub after i did a re-installation of windows on my machine ?”
Linux has been there for quite some time, then come windows.. and as usual, windows tend to have it
re-format for various reason after some period of time…
Yes.. linux got “yum upgrade” thingy .. but that also seem to break sometime also ( big time!!) ..
but this time not discussing on linux part..
but the question is “how to restore grub again so that i can boot again to my linux partition which is still reside
somewhere inside the disk.. ”
( luckily windows still unable to read ext3 ) *up to time of writing.. xp & vista*
else .. it would have been another messed up like “Ubuntu 9.10” … hehehe
Oh.. this is how we gonna do it..
Get a CentOS 5.4 DVD ..
or boot.iso which is smaller and can be burned into CD or
just USB if your machine support USB boot..
(apparently D630 does support USB boot.)
it will boot to rescue prompt..
whenever asked to enable networking or not .. select “No”.. (not needed for just this task)
it shall asked whether or not to mount existing linux partitition into “/mnt/sysimage”
.. then it shall shows a (single user) prompt.. like this
ok.. now get the current disk config with
it shall spit something like this..
sh-3.2# fdisk -l Disk /dev/sda: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 1 1242 9976333+ 83 Linux
so that you know the disk is at “/dev/sda”
.. now let’s change to our target rootfs.
by issuing this ..
then.. re-install grub with the following command.
grub-install --recheck --no-floppy /dev/sda
because my machine got no floppy… hehe..
sh-3.2# grub-install --recheck --no-floppy /dev/sda Probing devices to guess BIOS drives. This may take a long time. Installation finished. No error reported. This is the contents of the device map /boot/grub/device.map. Check if this is correct or not. If any of the lines is incorrect, fix it and re-run the script `grub-install'. (hd0) /dev/sda
and.. that’s it.. “exit” and it shall rebooted and can see you grub again..
p/s : somehow not publishing the series of event log for today (only known to me and few others near me.. ) …
as someone had said this to me before i press publish button :
“Oh.. blog is reachable from other countries also..
so .. if you plan to write something like ‘Welcome to Malaysia‘…
then it must be kinda a wonderful thing .. hahahaha..” ( Google will somehow pick up that ..i believe.. ~ hehe )