Subject: RE: MBR and Logitech USB mouse.
From: Brian ThunderEagle (aklug@arcadia.2y.net)
Date: Thu Jun 13 2002 - 01:22:18 AKDT
I gave up on it. I had nothing to lose so I just restarted. But it is still
something I would like to know in the future. Had there been any important
information on the drive I would have lost it all. So would still like to
know if there is anyway to fix this kind of a problem.
-----Original Message-----
From: aklug-bounce@aklug.org [mailto:aklug-bounce@aklug.org]On Behalf Of
bryan@ak.net
Sent: Wednesday, June 12, 2002 5:21 PM
To: aklug@aklug.org
Subject: Re: MBR and Logitech USB mouse.
On Fri, Jan 01, 1999 at 11:52:22PM -0900, Brian ThunderEagle
<aklug@arcadia.2y.net> wrote:
>
> I decided to take this
> moment to make my computer dual-boot with RedHat 7.2 and Windows 2000. So,
I
> have everything up and running great. Both OS's are installed and I have
Grub
> set up to access both. However because of the way Dynamic diks work with
> Windows 2000, and related hard drive 'stuff' I had to use Diskprobe to
modify
> the type ID. I made a mistake, but luckily I had the boot sector backed
up. I
> was able to restore the Primary partition boot sector, but now my Linux
> partition is missing and I can't boot, because I was using Grub. So I can
> either re-install everything, or I was hoping there was a feature in Linux
that
> is equivalent to "fdisk /mbr" which is how I was able to restore the
Windows
> partition. So if anybody knows if it is possible to restore a missing
Linux
> Partition please let me know, I am going to continue to try and figure it
out.
I don't know if this will help or not, but....
Keep in mind that each partition on a drive has its own boot sector
at the beginning of the partition, but these are all separate from
the MASTER boot record (MBR) at the very beginning of the disk. It's
this MBR that is rewritten by 'fdisk /mbr', of course. I'm not
familiar with Grub, but LILO can go either in the MBR, or a partition's
boot sector.
Immediately after the MBR, I believe, is the partition table, which
specifies the Cylinder, Head, and Sector at which each partition
begins and ends. So 'fdisk /mbr' will make the disk bootable, and
is not specific to any one partition. Once that is good, you need
to have a partition table that specifies where things are. Aside
from that, whether or not you need anything special in the partition
boot sectors depends on your method of bootloading.
Does that help at all? Corrections from others are welcome.
-- Bryan Medsker bryan@ak.net--------- To unsubscribe, send email to <aklug-request@aklug.org> with 'unsubscribe' in the message body.
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