Re: ext3 partition recovery (Again) - forgot this
Hi,
No don't run gpart, was asking you if you'd written the partition table
recommended by gpart since you mentioned in your first mail that it couldn't
help. I don't think it's guesses are too correct in this case, though it may
give you info for some good guesses.
Since you have the /boot/boot.xxx file, things should be easy. You can
recover the partition table file from this file i.e. if your confident that
the partition table information since the time this file was created is
correct.
First however backup your MBR to a file and note down the output of fdisk -l
on a piece of paper. This will help you backtrack in case something goes
wrong. Also make sure you have a bootable disk since this may leave your
system in an unbootable state.
You can backup your MBR to a file using the following :
dd if=/dev/hda of=mbr bs=512 count=1
To restore the MBR from the /boot/boot.xxx file that you have type :
dd if=/boot/boot.xxx of=/dev/hda bs=1 count=64 skip=446 seek=446
replace the xxx with the suffix of the file.
This should get your partition table back to the way it was. If all goes
well then things should be back to the way they were however you may not be
able to boot into the system. Use the bootable disk to boot into the system
and check if all partitions are accessible. You can then use Lilo to
reinstall the bootloader back in your MBR.
If the above doesn't work then you should still be in a position to
reconstruct your partition table using fdisk, however don't reinstall your
OS or do any significant writing to your disk since it may erase data and
make things irrcoverable.
Good luck.
Bye
----- Original Message -----
From: "Miguel" <maiguel@subdimension.com>
To: <topcat@bom3.vsnl.net.in>
Cc: <j_golani@softhome.net>; <debian-user@lists.debian.org>
Sent: Wednesday, January 29, 2003 9:51 PM
Subject: Re: ext3 partition recovery (Again) - forgot this
> Yes, I have the /boot/boot.003 file but I don't know how to use it or
> event to get that information (it is a binary file...).
>
> Do you really think I should try to use the gpart -w ? That is risky
> because I can boot the system--the disk is in a laptop and I cannot
> remove that disk or even add another one to repair any problem
> caused with the gpart -w...
>
> You told something about "trial and error"... do you mean to:
> - use, for example, the GNU parted to try to create a new partition in
> the place I suppose it was before;
> - try to reboot the system;
> - try to mount the partition;
> - delete the partition
> - [ . . . ]
>
> until it works?
>
> On Wed, 29 Jan 2003 19:15:58 +0530
> Jeetu Golani <j_golani@softhome.net> wrote:
>
> >
> > Forgot to add this to my earlier mail, you mentioned you have the
> > partition info when you used lilo. Please mail that info, you should
> > be able to reconstruct your partition table with that info using
> > fdisk.
> >
> > Bye
> >
> > On Wednesday 29 Jan 2003 4:06 pm, you wrote:
> > > On Wed, 29 Jan 2003 10:41:51 +0530
> > >
> > > Jeetu Golani <j_golani@softhome.net> wrote:
> > > > Hi there,
> > > >
> > > > Your fdisk doesn't show the last ext3 partition, therefore your
> > > > partition table is messed up (nothing new in that). Gpart seems to
> > > > think that there're two other partitions apart from the ones being
> > > > detected by fdisk i.e. one partition more than what you suggested
> > > > in your earlier mail where in you said
> > > >
> > > > My partition looks (used to...) like this:
> > > > > > |-- 1. NTFS
> > > > > > |
> > > > > > |-- 2. ext2
> > > > > > |
> > > > > > |-- 3. extended
> > > > > > |
> > > > > > | |-- 3.1 ext3 [ / ]
> > > > > > | |
> > > > > > | |-- 3.2 swap
> > > > > > | |
> > > > > > | |-- 3.3 ext3 [/home]
> > > >
> > > > Gpart thinks that beyond the last ext3 partition there's another
> > > > Linux Partition?? Could you tell me the sizes of each partition as
> > > > you remember them. Do you think there was another partition beyond
> > > > the last /ext3 partition that you've mentioned above.
> > >
> > > No, there was not other partition at the end. Probably just some
> > > free space at the end. The last partition (the lost one) was about
> > > 6.5G.
> > >
> > > I suppose I can get the old partition table information from the
> > > /boot/boot.XXX file created by lilo. I am not using lilo at this
> > > moment but that file is still there and I didn't changed the
> > > partitions since I changed lilo by grub. How can I retrieve that
> > > information from the boot.XXX file?
> > >
> > > Do you think this problem is recoverable?
> > >
> > > > Bye
> > > >
> > > > On Wednesday 29 Jan 2003 12:00 am, you wrote:
> > > > > Ok, here goes the output of some useful commands. Hope it
> > > > > helps...
> > > > >
> > > > > fdisk -l /dev/hda:
> > > > > ------------------
> > > > >
> > > > > Disk /dev/hda: 255 heads, 63 sectors, 2432 cylinders
> > > > > Units = cylinders of 16065 * 512 bytes
> > > > >
> > > > > Device Boot Start End Blocks Id System
> > > > > /dev/hda1 * 1 510 4096543+ 7 HPFS/NTFS
> > > > > /dev/hda2 511 632 979965 b Win95 FAT32
> > > > > /dev/hda3 633 2432 14458500 5 Extended
> > > > > /dev/hda5 633 1544 7325608+ 83 Linux
> > > > > /dev/hda6 1545 1580 289138+ 82 Linux swap
> > > > >
> > > > > gpart -v /dev/hda:
> > > > > ------------------
> > > > >
> > > > > dev(/dev/hda) mss(512) chs(2432/255/63)(LBA) #s(39070080)
> > > > > size(19077mb) Primary partition(1)
> > > > > type: 007(0x07)(OS/2 HPFS, NTFS, QNX or Advanced UNIX) (BOOT)
> > > > > size: 4000mb #s(8193087) s(63-8193149)
> > > > > chs: (0/1/1)-(509/254/63)d (0/1/1)-(509/254/63)r
> > > > > hex: 80 01 01 00 07 FE 7F FD 3F 00 00 00 3F 04 7D 00
> > > > >
> > > > > Primary partition(2)
> > > > > type: 011(0x0B)(DOS or Windows 95 with 32 bit FAT)
> > > > > size: 956mb #s(1959930) s(8193150-10153079)
> > > > > chs: (510/0/1)-(631/254/63)d (510/0/1)-(631/254/63)r
> > > > > hex: 00 00 41 FE 0B FE BF 77 7E 04 7D 00 FA E7 1D 00
> > > > >
> > > > > Primary partition(3)
> > > > > type: 005(0x05)(Extended DOS)
> > > > > size: 14119mb #s(28917000) s(10153080-39070079)
> > > > > chs: (632/0/1)-(1023/254/63)d (632/0/1)-(2431/254/63)r
> > > > > hex: 00 00 81 78 05 FE FF FF 78 EC 9A 00 08 3D B9 01
> > > > >
> > > > > Logical partition
> > > > > type: 131(0x83)(Linux ext2 filesystem)
> > > > > size: 7153mb #s(14651217) s(10153143-24804359)
> > > > > chs: (632/1/1)-(1023/254/63)d (632/1/1)-(1543/254/63)r
> > > > > hex: 00 01 81 78 83 FE FF FF 3F 00 00 00 51 8F DF 00
> > > > >
> > > > > Logical partition
> > > > > type: 130(0x82)(Linux swap or Solaris/x86)
> > > > > size: 282mb #s(578277) s(24804423-25382699)
> > > > > chs: (1023/254/63)-(1023/254/63)d
> > > > > (1544/1/1)-(1579/254/63)r hex: 00 FE FF FF 82 FE FF FF 3F
> > > > > 00 00 00 E5 D2 08 00
> > > > >
> > > > > Primary partition(4)
> > > > > type: 000(0x00)(unused)
> > > > > size: 0mb #s(0) s(0-0)
> > > > > chs: (0/0/0)-(0/0/0)d (0/0/0)-(0/0/0)r
> > > > > hex: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> > > > >
> > > > >
> > > > > Begin scan...
> > > > > Possible partition(Windows NT/W2K FS), size(4000mb), offset(0mb)
> > > > > type: 007(0x07)(OS/2 HPFS, NTFS, QNX or Advanced UNIX)
> > > > > size: 4000mb #s(8193080) s(63-8193142)
> > > > > chs: (0/1/1)-(509/254/56)d (0/1/1)-(509/254/56)r
> > > > > hex: 00 01 01 00 07 FE 78 FD 3F 00 00 00 38 04 7D 00
> > > > >
> > > > > Possible partition(DOS FAT), size(956mb), offset(4000mb)
> > > > > type: 012(0x0C)(DOS or Windows 95 with 32 bit FAT, LBA)
> > > > > size: 956mb #s(1959930) s(8193150-10153079)
> > > > > chs: (510/0/1)-(631/254/63)d (510/0/1)-(631/254/63)r
> > > > > hex: 00 00 41 FE 0C FE BF 77 7E 04 7D 00 FA E7 1D 00
> > > > >
> > > > > Possible extended partition at offset(4957mb)
> > > > > Possible partition(Linux ext2), size(7153mb), offset(4957mb)
> > > > > type: 131(0x83)(Linux ext2 filesystem)
> > > > > size: 7153mb #s(14651216) s(10153143-24804358)
> > > > > chs: (632/1/1)-(1023/254/63)d (632/1/1)-(1543/254/62)r
> > > > > hex: 00 01 81 78 83 FE FF FF B7 EC 9A 00 50 8F DF 00
> > > > >
> > > > > Possible partition(Linux swap), size(282mb), offset(12111mb)
> > > > > type: 130(0x82)(Linux swap or Solaris/x86)
> > > > > size: 282mb #s(578272) s(24804423-25382694)
> > > > > chs: (1023/254/63)-(1023/254/63)d
> > > > > (1544/1/1)-(1579/254/58)r hex: 00 FE FF FF 82 FE FF FF 47
> > > > > 7C 7A 01 E0 D2 08 00
> > > > >
> > > > > Possible extended partition at offset(12393mb)
> > > > > Possible partition(Linux ext2), size(2055mb), offset(13656mb)
> > > > > type: 131(0x83)(Linux ext2 filesystem)
> > > > > size: 2055mb #s(4208960) s(27969228-32178187)
> > > > > chs: (1023/254/63)-(1023/254/63)d
> > > > > (1741/1/1)-(2002/254/56)r hex: 00 FE FF FF 83 FE FF FF CC
> > > > > C6 AA 01 40 39 40 00
> > > > >
> > > > > Possible extended partition at offset(15712mb)
> > > > > Possible partition(Linux ext2), size(3365mb), offset(15712mb)
> > > > > type: 131(0x83)(Linux ext2 filesystem)
> > > > > size: 3365mb #s(6891816) s(32178258-39070073)
> > > > > chs: (1023/254/63)-(1023/254/63)d
> > > > > (2003/1/1)-(2431/254/57)r hex: 00 FE FF FF 83 FE FF FF 52
> > > > > 00 EB 01 28 29 69 00
> > > > >
> > > > > End scan.
> > > > >
> > > > > Checking partitions...
> > > > >
> > > > > * Warning: more than 3 primary partitions: 4.
> > > > > Partition(OS/2 HPFS, NTFS, QNX or Advanced UNIX): primary
> > > > > Partition(DOS or Windows 95 with 32 bit FAT, LBA): primary
> > > > > Partition(Linux ext2 filesystem): logical
> > > > > Partition(Linux swap or Solaris/x86): logical
> > > > > Partition(Linux ext2 filesystem): primary
> > > > > Partition(Linux ext2 filesystem): invalid primary
> > > > > Ok.
> > > > >
> > > > > Guessed primary partition table:
> > > > > Primary partition(1)
> > > > > type: 007(0x07)(OS/2 HPFS, NTFS, QNX or Advanced UNIX)
> > > > > size: 4000mb #s(8193080) s(63-8193142)
> > > > > chs: (0/1/1)-(509/254/56)d (0/1/1)-(509/254/56)r
> > > > > hex: 00 01 01 00 07 FE 78 FD 3F 00 00 00 38 04 7D 00
> > > > >
> > > > > Primary partition(2)
> > > > > type: 012(0x0C)(DOS or Windows 95 with 32 bit FAT, LBA)
> > > > > size: 956mb #s(1959930) s(8193150-10153079)
> > > > > chs: (510/0/1)-(631/254/63)d (510/0/1)-(631/254/63)r
> > > > > hex: 00 00 41 FE 0C FE BF 77 7E 04 7D 00 FA E7 1D 00
> > > > >
> > > > > Primary partition(3)
> > > > > type: 015(0x0F)(Extended DOS, LBA)
> > > > > size: 7436mb #s(15229620) s(10153080-25382699)
> > > > > chs: (632/0/1)-(1023/254/63)d (632/0/1)-(1579/254/63)r
> > > > > hex: 00 00 81 78 0F FE FF FF 78 EC 9A 00 B4 62 E8 00
> > > > >
> > > > > Primary partition(4)
> > > > > type: 131(0x83)(Linux ext2 filesystem)
> > > > > size: 2055mb #s(4208960) s(27969228-32178187)
> > > > > chs: (1023/254/63)-(1023/254/63)d (1741/1/1)-(2002/254/56)r
> > > > > hex: 00 FE FF FF 83 FE FF FF CC C6 AA 01 40 39 40 00
> > > > >
> > > > >
> > > > > That's it. Hope somebody help...
> > > > >
> > > > > ==============
> > > > > Luís Henriques
> > >
> > > --------------
> > > Luís Henriques
> >
>
>
> --------------
> Luís Henriques
>
>
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