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Re: Help, the dog ate my MBR (Linux/Windows dual boot)

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From Noob <root@127.0.0.1>
Newsgroups comp.os.linux.setup, comp.unix.programmer, comp.sys.ibm.pc.hardware.storage
Subject Re: Help, the dog ate my MBR (Linux/Windows dual boot)
Date Sat, 23 Jul 2011 21:25:06 +0200
Organization A noiseless patient Spider
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Cross-posted to 3 groups.

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Franc Zabkar wrote:

> Noob wrote:
>
>>> Something trashed my MBR. Now when I boot the PC,
>>> I get the dreaded "NON-SYSTEM DISK. PLEASE INSERT
>>> SYSTEM DISK AND PRESS ENTER" (or something close).
>>
>> By MBR, I meant the first sector of my hard disk drive,
>> i.e. the boot-strapping code, and the table of primary
>> partitions.
>>
>>> I had used gparted to create three primary partitions
>>> (all partitions are aligned to 1 MiB, even though
>>> this is not a 4K-sector HDD)
>>> partition 1 : 80.00 GiB (for WinXP)
>>> partition 2 : 33.75 GiB (for Fedora 13)
>>> partition 3 : 765 MiB (for swap)
>>
>> Short version of the rest of original message : the first sector
>> had been shifted by 14 bytes. Weird, right?
>
> ISTM that you are confusing the real, "good" MBR (ie physical sector
> 0) with GRUB's "bad" MBR. The latter appears to be relocated to some
> other LBA(s), not LBA 0.

I got a copy of the MBR by running
dd if=/dev/sda of=mbr.bin bs=512 count=2

This should get to LBA 0, right?

My partition table is

80 20 21 00 07 fe ff ff 00 08 00 00 00 00 00 0a
00 fe ff ff 83 fe ff ff 00 08 00 0a 00 00 38 04
00 fe ff ff 82 fe ff ff 00 08 38 0e 00 e8 17 00

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Thread

Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@localhost> - 2011-07-22 00:45 -0400
  Re: Help, the dog ate my MBR (Linux/Windows dual boot) Ian Collins <ian-news@hotmail.com> - 2011-07-22 10:50 +1200
    Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@localhost> - 2011-07-22 01:26 -0400
      Re: Help, the dog ate my MBR (Linux/Windows dual boot) Paul <nospam@needed.com> - 2011-07-21 19:38 -0400
        Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@127.0.0.1> - 2011-07-22 16:29 +0200
          Re: Help, the dog ate my MBR (Linux/Windows dual boot) Paul <nospam@needed.com> - 2011-07-22 14:28 -0400
      Re: Help, the dog ate my MBR (Linux/Windows dual boot) g.fink@gmx.net (Gernot Fink) - 2011-07-22 04:35 +0000
  Re: Help, the dog ate my MBR (Linux/Windows dual boot) Mike Easter <MikeE@ster.invalid> - 2011-07-21 19:20 -0700
    Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@127.0.0.1> - 2011-07-22 11:00 +0200
      Re: Help, the dog ate my MBR (Linux/Windows dual boot) GangGreene <GangGreene@invalid.com> - 2011-07-22 05:29 -0400
        Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@127.0.0.1> - 2011-07-22 12:01 +0200
          Re: Help, the dog ate my MBR (Linux/Windows dual boot) g.fink@gmx.net (Gernot Fink) - 2011-07-22 10:28 +0000
  Re: Help, the dog ate my MBR (Linux/Windows dual boot) "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2011-07-21 23:33 -0400
  Re: Help, the dog ate my MBR (Linux/Windows dual boot) BGB <cr88192@hotmail.com> - 2011-07-21 21:26 -0700
  Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@127.0.0.1> - 2011-07-22 16:25 +0200
    Re: Help, the dog ate my MBR (Linux/Windows dual boot) Bob Willard <BobwBSGS@TrashThis.comcast.net> - 2011-07-22 12:17 -0400
      Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@127.0.0.1> - 2011-07-22 18:35 +0200
    Re: Help, the dog ate my MBR (Linux/Windows dual boot) Arno <me@privacy.net> - 2011-07-22 18:41 +0000
    Re: Help, the dog ate my MBR (Linux/Windows dual boot) Paul <nospam@needed.com> - 2011-07-22 14:52 -0400
      Re: Help, the dog ate my MBR (Linux/Windows dual boot) The Natural Philosopher <tnp@invalid.invalid> - 2011-07-23 02:23 +0100
    Re: Help, the dog ate my MBR (Linux/Windows dual boot) scott@slp53.sl.home (Scott Lurndal) - 2011-07-22 19:19 +0000
      Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@127.0.0.1> - 2011-07-23 20:51 +0200
        Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@127.0.0.1> - 2011-07-24 16:54 +0200
        Re: Help, the dog ate my MBR (Linux/Windows dual boot) Arno <me@privacy.net> - 2011-07-24 15:29 +0000
          Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@127.0.0.1> - 2011-07-27 11:36 +0200
            Re: Help, the dog ate my MBR (Linux/Windows dual boot) The Natural Philosopher <tnp@invalid.invalid> - 2011-07-27 12:13 +0100
            Re: Help, the dog ate my MBR (Linux/Windows dual boot) scott@slp53.sl.home (Scott Lurndal) - 2011-07-27 20:48 +0000
              Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@127.0.0.1> - 2011-07-28 10:43 +0200
              Re: Help, the dog ate my MBR (Linux/Windows dual boot) Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups@NTLWorld.COM> - 2011-07-29 00:49 +0100
    Re: Help, the dog ate my MBR (Linux/Windows dual boot) Ian Collins <ian-news@hotmail.com> - 2011-07-23 09:44 +1200
    Re: Help, the dog ate my MBR (Linux/Windows dual boot) Franc Zabkar <fzabkar@iinternode.on.net> - 2011-07-23 10:05 +1000
      Re: Help, the dog ate my MBR (Linux/Windows dual boot) Paul <nospam@needed.com> - 2011-07-22 20:58 -0400
        Re: Help, the dog ate my MBR (Linux/Windows dual boot) Franc Zabkar <fzabkar@iinternode.on.net> - 2011-07-23 11:31 +1000
          Re: Help, the dog ate my MBR (Linux/Windows dual boot) Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups@NTLWorld.COM> - 2011-07-29 01:18 +0100
        Re: Help, the dog ate my MBR (Linux/Windows dual boot) Franc Zabkar <fzabkar@iinternode.on.net> - 2011-07-23 19:02 +1000
        Re: Help, the dog ate my MBR (Linux/Windows dual boot) Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups@NTLWorld.COM> - 2011-07-29 01:37 +0100
      Re: Help, the dog ate my MBR (Linux/Windows dual boot) Franc Zabkar <fzabkar@iinternode.on.net> - 2011-07-23 17:34 +1000
      Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@127.0.0.1> - 2011-07-23 21:25 +0200
        Re: Help, the dog ate my MBR (Linux/Windows dual boot) Franc Zabkar <fzabkar@iinternode.on.net> - 2011-07-25 08:15 +1000
          Re: Help, the dog ate my MBR (Linux/Windows dual boot) scott@slp53.sl.home (Scott Lurndal) - 2011-07-24 23:08 +0000
            Re: Help, the dog ate my MBR (Linux/Windows dual boot) Franc Zabkar <fzabkar@iinternode.on.net> - 2011-07-25 09:46 +1000
              Re: Help, the dog ate my MBR (Linux/Windows dual boot) scott@slp53.sl.home (Scott Lurndal) - 2011-07-25 02:19 +0000
                Re: Help, the dog ate my MBR (Linux/Windows dual boot) Paul <nospam@needed.com> - 2011-07-24 22:38 -0400
                Re: Help, the dog ate my MBR (Linux/Windows dual boot) Franc Zabkar <fzabkar@iinternode.on.net> - 2011-07-25 19:38 +1000
                Re: Help, the dog ate my MBR (Linux/Windows dual boot) Franc Zabkar <fzabkar@iinternode.on.net> - 2011-07-25 19:34 +1000
            Re: Help, the dog ate my MBR (Linux/Windows dual boot) Michael Press <rubrum@pacbell.net> - 2011-08-03 21:56 -0700
              Re: Help, the dog ate my MBR (Linux/Windows dual boot) John Hasler <jhasler@newsguy.com> - 2011-08-04 08:15 -0500
      Re: Help, the dog ate my MBR (Linux/Windows dual boot) Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups@NTLWorld.COM> - 2011-07-29 01:10 +0100
    Re: Help, the dog ate my MBR (Linux/Windows dual boot) gordonb.22upl@burditt.org (Gordon Burditt) - 2011-07-23 17:15 -0500
    Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@127.0.0.1> - 2011-07-24 16:42 +0200
    Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@127.0.0.1> - 2011-10-27 11:13 +0200
      Re: Help, the dog ate my MBR (Linux/Windows dual boot) Arno <me@privacy.net> - 2011-10-27 15:24 +0000
        Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@127.0.0.1> - 2011-10-28 11:06 +0200
  Re: Help, the dog ate my MBR (Linux/Windows dual boot) Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups@NTLWorld.COM> - 2011-07-29 00:49 +0100
    Re: Help, the dog ate my MBR (Linux/Windows dual boot) Noob <root@127.0.0.1> - 2011-08-01 11:27 +0200
      Re: Help, the dog ate my MBR (Linux/Windows dual boot) Nico Kadel-Garcia <nkadel@gmail.com> - 2011-08-06 10:00 -0700

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