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Author Re: Dual boot MBR fail --> Some advises.
AnonymousFC3

2004-11-22, 5:51 pm

Bruce:
I am not sure I understand your request.
Fails, how?
1) There is a quite good HOWTO on dual boot.
2) Unfortunatly dual boot is not yet adressed in the RH/Fedora distro, but
is very doable if you knaow what you are doing.
--
Now I will try:
1) To recover your windows you can boot with a dos diskette with fdisk.exe
and type:
fdisk /mbr
There is no feedback, but the MBR (master boot record)will be restored and
windows will be bootable.

2) If you have made a Linux bootable diskette, you can boot Linux with it,
and then modify the MBR as explained in the howto (OR Linux in a Nutshell).
Hopefully you have use GRUB as your boot loader, but even with Lilo, this
works.

3) An alternative is to reinstall Linux.
Hopefully you have a t least three partitions for Linux:
a) /boot not that big, say 100MB is plenty, it will contains GRUB,
and one or more kernel compressed code. Up2date will add new kernels code
there.

b) a swap partition, about twice the amount of RAM you have, 1 GB is
usually fine.

c) A partition to install Linux, and mount / 5 to * Gb is what you
need.

WHen you reinstall linux (suggest you get FC2), then go to manual install,
and ask to install GRUB and boot loader at the first sector of the /boot
partition. Then everything will work!

Note, that it is alway a good idea to have a Linux boot diskette (or CD),
and a copy of your fisrt sector, for both Windows, and Linux. Use dd to
create or restore.

Hope this help.
Good Luck.
AFC3







Bruce Barbour wrote:

> Red Hat 9, mbr not operating, grub.conf shown in faded text in
> /boot/grub/grub.conf file. Windows 98 on first partition, mbr scrambled
> after crash so only loads Windows on re-boot.
> Can I use Rescue on install disk to re-set mbr? Red Hat Bible advice to
> type following as root -"grub-install /dev/hda" fails - no such command.
> Tnx


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