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MBR trashed?

Posted on 2004-09-30
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Last Modified: 2011-10-03
I think it might be! I shan't go into precisely why i think this for the moment (suffice it to say install problems with Woody + boot problems), as i want to confirm or refute my diagnosis. What is the best way to do this?

I was thinking along the lines of something like

install-mbr --list --no-act /dev/hda5

but i'm not certain if this right
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Question by:CEHJ
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7 Comments
 
LVL 9

Expert Comment

by:majorwoo
ID: 12196000
It looks like you are trying to rewrite your MBR, the question is what boot manager are you trying to load here, lilo or grub?
Also, do you intend to instal to /dev/hda5 and not /dev/hda

I'd love to help you, but your queston is pretty vague...
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LVL 86

Author Comment

by:CEHJ
ID: 12197697
>>I'd love to help you, but your queston is pretty vague...

Probably, didn't phrase it very well. Here is the question put more simply:

How do i read/display the MBR?
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LVL 5

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by:Anonymouslemming
ID: 12198540
You can take a copy of the mbr by doing
dd if=/dev/hda of=mbr.image count=1 bs=512

How you would view this is beyond me.

I would advise just replacing the MBR  by re-installing GRUB.
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LVL 86

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by:CEHJ
ID: 12198624
>>How you would view this is beyond me.

In a hex editor. One of the things that is perplexing me is that i've been told my BIOS has LBA support. Woody seems to think otherwise. AFAIK most of the utils (e.g. fdisk, cfdisk etc) cannot tell me if i have an extended CHS partition or an extended LBA partition
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LVL 86

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by:CEHJ
ID: 12229888
Going to delete this now guys if that's OK
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