On Fri, 5 Aug 2005, Gerald Teschl wrote:

> Yes, I agree. I have some boxes where this never happend. Unfortunately
> we have some where it seems quite frequent;-(
I did some 30+ upgrades yesterday and had troubles to reproduce it 
(murphy;-). Anyway, I eventually managed:

The box had fc3 installed:
/dev/hda1 /
/dev/hda2 swap
/dev/hda3 /local

These partitions are anaconda installed (before and after):

clearpart --all
part / --size 6000 --grow --maxsize 10000
part swap --recommended
part /local --size 1 --grow

output from fdisk:
Disk /dev/hda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

    Device Boot      Start         End      Blocks   Id  System
/dev/hda1   *           1        1274    10233373+  83  Linux
/dev/hda2            1275        1400     1012095   82  Linux swap
/dev/hda3            1401        9729    66902692+  83  Linux



1) No errors visible, but "failed to load stage 2" error after reboot.
2) Boot sector after install is different, so the bootsector was
overwritten during install.
3) Reinstalling grub: "grub-install /dev/hda" fixed it.
4) The bad and good boot sectors differ by just a few bytes:

--- bs.bad.txt  2005-08-09 10:49:30.841712672 +0200
+++ bs.good.txt 2005-08-09 10:49:37.490701872 +0200
@@ -2,7 +2,7 @@
  0000020 000277 134406 000400 122762 016752 000006 137000 003676
  0000040 002263 036200 072200 100016 000074 016165 143203 177020
  0000060 072713 146757 105430 105424 001114 167213 143203 001003
-0000100 000200 100000 001217 000013 004000 100372 100312 051752
+0000100 000377 020000 000001 000000 001000 100372 100312 051752
  0000120 000174 030400 107300 107330 136320 020000 120373 076100
  0000140 177474 001164 141210 137122 076571 032350 173001 100302
  0000160 052164 040664 125273 146525 055023 071122 100511 052773

Any gurb-experts with further suggestions?

Thanks,
Gerald