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Message-ID: <36566.192.168.10.32.1107251557.squirrel@www.hq.astra.ph>
Date: Tue, 1 Feb 2005 17:52:37 +0800 (PHT)
Subject: /dev/hda overwritten on local cygwin mirror
From: list-subscriber AT hq DOT astra DOT ph
To: cygwin AT cygwin DOT com
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Hello Cygwin Gurus,

Before anyone starts flaming me, I'd like to say that the question I have
does not concern any particular app in cygwin but the whole  of cygwin (as
in literally) on our local mirror...(If this is better discussed in
cygwin-talk, please point it out.)

Here's the problem:

Our cygwin mirror is on a linux box running trustix secure linux version
2.0.  I decided to upgrade to trustix secure linux 2.2 and as I was about
to created a bootdisk for a network install, I inadvertently typed:

dd if=bootnet.img of=/dev/hda

Then, as soon as I pressed enter, it was too late to realize that I
should've typed  /dev/fd0
instead of /dev/hda.

This server we have, thank goodness, has not crashed.  The size of
bootnet.img is just 1474560 bytes and I was relieved that it was just that
size.  I'm sure the partition table got messed up.

I'd like to know how I could rewrite back the partition table to the
correct values.  I've attached the output of  /proc/partitions since
pasting the text here results in a line wrap.

Here's the output of fdisk -l

# fdisk -l /dev/hda
Disk /dev/hda: 40.0 GB, 40020664320 bytes
255 heads, 63 sectors/track, 4865 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/hda1   ?     37025     28907 2082274171+  e1  DOS access
Partition 1 does not end on cylinder boundary.
/dev/hda2   ?    205730    157209 1757737216    6  FAT16
Partition 2 does not end on cylinder boundary.
/dev/hda3   ?     92987     13629 1510045103+  b8  BSDI swap
Partition 3 does not end on cylinder boundary.
/dev/hda4   ?     87045    154994 545800106+  5e  Unknown
Partition 4 does not end on cylinder boundary.

Partition table entries are not in disk order

As you can see, the partition table is messed up.   However, I'm lucky to
have all the partitions mounted so the output of df makes much more sense:

# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/hda1              4200828   1495504   2705324  36% /
/dev/hda10             8499136   6305520   1761872  79% /home
/dev/hda5              4134900   3612280    312572  93% /var
/dev/hda7              8262036   7273616    568724  93% /var/ftp
/dev/hda6              4134900   2430408   1494444  62% /var/log
/dev/hda8              8262036   5231308   2611032  67% /var/www

I've noticed that the "blocks" fields displayed with  `cat
/proc/partitions' and `df' are
not the same.   (Which of the two is correct).

Could someone point out how to restore my partition table (or how to
restore the first 1.44 MB  that had been overwritten on /dev/hda).


Please save our cygwin mirror!

Thanks in advance.

Best Regards,

Carlo

--
Carlo Florendo
Astra Philippines Inc.
www.astra.ph
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major minor  #blocks  name     rio rmerge rsect ruse wio wmerge wsect wuse running use aveq

   3     0   39082680 hda 948782 6795238 61940676 11513870 872690 1386866 18096468 6577050 -1 6038100 10901089
   3     1    4200966 hda1 37407 266270 2429434 352500 342963 381836 5813048 1102780 0 337700 1457290
   3     2          1 hda2 0 0 0 0 0 0 0 0 0 0 0
   3     5    4200966 hda5 37136 7698 358314 326270 214403 348550 4508512 835120 0 531150 1161510
   3     6    4200966 hda6 107639 327316 3479274 1795720 261661 376088 5103736 1188160 0 484400 2984090
   3     7    8393931 hda7 414644 4604479 40152618 4592460 19911 200487 1764968 2131410 0 2380960 6724290
   3     8    8393931 hda8 238342 391818 5040914 734870 7379 22273 238024 632270 0 479010 1367580
   3     9    1052226 hda9 924 4977 47208 17740 1002 4803 46944 44300 0 34840 62120
   3    10    8634906 hda10 111216 1192446 10429498 3692690 25346 51412 618352 642510 0 1674230 4335540

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