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Old 04-30-2006, 05:18 PM   #1
dtcs
LQ Newbie
 
Registered: Jul 2005
Distribution: Slackware, Debian
Posts: 28

Rep: Reputation: 15
GRUB setup problem


Hi,
I messed up GRUB boot sequence by playing around now it wont load from HD.

I am trying to load GRUB from MBR.
I have two HDs:
(hd0,1) and (hd1,1) both contain /boot/grub/stage1

From GRUB shell I enter:
>root (hd0,1)
>setup (hd0)
All goes well, it detects stage1 and shows Success done.

When i reboot, grub dosn't start and shows garbage line.

Fortunately i have GRUB floppy, but how do I load it from HD?

Heres a Hexdump from MBR hd0:
Code:
00000000  eb 48 90 d0 bc 00 7c fb  50 07 50 1f fc be 1b 7c  |.H....|.P.P....||
00000010  bf 1b 06 50 57 b9 e5 01  f3 a4 cb bd be 07 b1 04  |...PW...........|
00000020  38 6e 00 7c 09 75 13 83  c5 10 e2 f4 cd 18 8b f5  |8n.|.u..........|
00000030  83 c6 10 49 74 19 38 2c  74 f6 a0 b5 07 b4 03 02  |...It.8,t.......|
00000040  ff 00 00 20 01 00 00 00  00 02 80 80 ca 00 80 53  |... ...........S|
00000050  7c 00 00 31 c0 8e d8 8e  d0 bc 00 20 fb a0 40 7c  ||..1....... ..@||
00000060  3c ff 74 02 88 c2 52 be  79 7d e8 34 01 f6 c2 80  |<.t...R.y}.4....|
00000070  74 54 b4 41 bb aa 55 cd  13 5a 52 72 49 81 fb 55  |tT.A..U..ZRrI..U|
00000080  aa 75 43 a0 41 7c 84 c0  75 05 83 e1 01 74 37 66  |.uC.A|..u....t7f|
00000090  8b 4c 10 be 05 7c c6 44  ff 01 66 8b 1e 44 7c c7  |.L...|.D..f..D|.|
000000a0  04 10 00 c7 44 02 01 00  66 89 5c 08 c7 44 06 00  |....D...f.\..D..|
000000b0  70 66 31 c0 89 44 04 66  89 44 0c b4 42 cd 13 72  |pf1..D.f.D..B..r|
000000c0  05 bb 00 70 eb 7d b4 08  cd 13 73 0a f6 c2 80 0f  |...p.}....s.....|
000000d0  84 f0 00 e9 8d 00 be 05  7c c6 44 ff 00 66 31 c0  |........|.D..f1.|
000000e0  88 f0 40 66 89 44 04 31  d2 88 ca c1 e2 02 88 e8  |..@f.D.1........|
000000f0  88 f4 40 89 44 08 31 c0  88 d0 c0 e8 02 66 89 04  |..@.D.1......f..|
00000100  66 a1 44 7c 66 31 d2 66  f7 34 88 54 0a 66 31 d2  |f.D|f1.f.4.T.f1.|
00000110  66 f7 74 04 88 54 0b 89  44 0c 3b 44 08 7d 3c 8a  |f.t..T..D.;D.}<.|
00000120  54 0d c0 e2 06 8a 4c 0a  fe c1 08 d1 8a 6c 0c 5a  |T.....L......l.Z|
00000130  8a 74 0b bb 00 70 8e c3  31 db b8 01 02 cd 13 72  |.t...p..1......r|
00000140  2a 8c c3 8e 06 48 7c 60  1e b9 00 01 8e db 31 f6  |*....H|`......1.|
00000150  31 ff fc f3 a5 1f 61 ff  26 42 7c be 7f 7d e8 40  |1.....a.&B|..}.@|
00000160  00 eb 0e be 84 7d e8 38  00 eb 06 be 8e 7d e8 30  |.....}.8.....}.0|
00000170  00 be 93 7d e8 2a 00 eb  fe 47 52 55 42 20 00 47  |...}.*...GRUB .G|
00000180  65 6f 6d 00 48 61 72 64  20 44 69 73 6b 00 52 65  |eom.Hard Disk.Re|
00000190  61 64 00 20 45 72 72 6f  72 00 bb 01 00 b4 0e cd  |ad. Error.......|
000001a0  10 ac 3c 00 75 f4 c3 00  00 00 00 00 00 00 00 00  |..<.u...........|
000001b0  00 00 00 00 00 00 00 00  42 83 f1 5c 00 00 80 01  |........B..\....|
000001c0  01 00 07 fe ff ff 3f 00  00 00 fc 8a 38 01 00 00  |......?.....8...|
000001d0  c1 ff 83 fe ff ff 3b 8b  38 01 92 ac c0 00 00 00  |......;.8.......|
000001e0  c1 ff 0f fe ff ff e3 fc  1d 02 62 b9 df 04 00 00  |..........b.....|
000001f0  c1 ff 82 fe ff ff cd 37  f9 01 16 c5 24 00 55 aa  |.......7....$.U.|
00000200
Note that GRUB is installed on 000000170 but I think it cant find stage2 and never loads it.

Last edited by dtcs; 04-30-2006 at 06:11 PM.
 
Old 05-01-2006, 08:29 PM   #2
b0nd
Senior Member
 
Registered: Jan 2005
Distribution: Slackware, BackTrack, Windows XP
Posts: 1,020

Rep: Reputation: 45
Hi,
why don't you reinstall grub into MBR using the bootable cd of the relevent distro ?

regards
 
  


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