Grub disk: something automatic?

[Dotan Cohen]

> Dotan, if we are talking only of grub-legacy not grub2, then at grub
> prompt do a 'root' and 'setup' like
> root (hd0,x)
> setup (hd1)
>
> But watch out for mapping if harddrive is not the master drive
> Also you would need to update-grub first for that (hd,x). You cannot do
> that at grub-prompt.
>

The problem is that I often cannot boot, so I cannot perform
update-grub. Also, most of my machines (other than the laptop) have
multiple hard drives.


> Reminder, grub legacy will not detect ext4 and grub2 config files. So if
> you have an OS on grub2 or ext4, it's best to go with grub2 and set that
> to mbr.
>

Yes, that is what I would like to do (in a general sense, no problem
to fix at the moment). What LiveCD will do this?


> SuperGrub is being maintained and I think they've come up with a version
> that uses grub2. It is grub-legacy that is not being maintained. But I
> do not use SuperGrub, so I am not sure if it is more useful now. I find
> the blank grub-legacy cd and now the blank grub2 cd more than adequate.
>

It seems that the SuperGrub devs are working on an alternative LiveCD
now, called Rescatux. However, it is vaporware at the moment.


> Strongly recommend you make a grub2 cd by 'grub-mkrescue'. It will boot
> up any OS in your computer, whether or not you've a functioning menu.lst
> or grub.cfg or a corrupted windows mbr.
>

This is not one specific machine, rather a general question to keep me
out of trouble next time. I like to break^w play with things while I
learn!


-- 
Dotan Cohen

http://what-is-what.com
http://gibberish.co.il