how do i format my mbr

Message

poison0046 · Post by **poison0046** » Sat Nov 08, 2003 12:17 am

does any one know how to format the mbr in linux? my mbr is all screwed up and i want ot format it so i can start over if u know how to format the mbr please tell me. thanks!!

bmichaelsen · Post by **bmichaelsen** » Sat Nov 08, 2003 1:04 am

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grub> root (hd0,0) (Your boot partition)
grub> setup (hd0) (Where the boot record is installed; here, it is the MBR)

(listing 23.3 of the Gentoo Linux 1.4 Installation Instructions)

xjeff · Post by **xjeff** » Sat Nov 08, 2003 1:06 am

I believe under the description for Documentation, Tips & Tricks it says:

Note: This is not a support forum.

Please think before you post.

Post by **pjp** » Sat Nov 08, 2003 2:07 am

Moved from Documentation, Tips & Tricks.

QPegasus · Post by **QPegasus** » Sat Nov 08, 2003 4:06 am

Before messing with the mbr, it might be wise to backup anything important, on your first partition at least.

I recently did what I think you want to do, and lost my windows partition which was on hda1.

Why do you want to format the MBR anyway? Whats wrong with it?

poison0046 · Post by **poison0046** » Sat Nov 08, 2003 4:45 pm

i want to format my mbr because i had my friend install gento because i don't have highspeed internet and he first installed grub and had a problem and then he installed lilo and when i try to boot to windows it goes to grub and then makes a loop.

idl · Post by **idl** » Sat Nov 08, 2003 5:05 pm

if you have a win98 bootdisk handy you can run

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fdisk /mbr

from it.

Anior · Post by **Anior** » Sat Nov 08, 2003 7:02 pm

If you really want to format your mbr, here is the command:

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 dd if=dev/zero of=dev/hda count=1 bs=512

However, it is most probably not what you want. If you want to reinstall a windows mbr, start with a windows bootdisk and type:

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fdisk /mbr

As posted above.

Whatever you do, do not run the dd command if you don't understand what it does.

nephros · Post by **nephros** » Sat Nov 08, 2003 8:24 pm

port001 wrote:if you have a win98 bootdisk handy you can run
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fdisk /mbr
from it.

And if you don't have it handy you can always get one from here: http://bootdisk.com/
As a bonus, they even have non-MS DOS (DRDOS) bootdisks.

how do i format my mbr

how do i format my mbr

Not a support forum

Re: Not a support forum