Re: ext3 partition recovery (Again) - forgot this
I tried this and didn't worked :(
No problems in booting the system after restoring the old MBR but the
partitions table was not changed. However, I'm sure that the boot.XXX
file is old (from the time I was still using lilo--I'm using grub now).
I think I am going to try the "trial and error" approach and, if not
succeeded, I'll need to create a new partition with the free
space--loosing all the information that was stored in the old /home/
partition. I'm glade you helped me with this problem but since there is
no easy (and, aparently, no hard soluction either...) solution, I'll
need to solve the problem by any means.
However, if anyone else as any good suggestion, I would like to know as
the problem may arise again. By now, I think I'll never use window$ to
do any critical operation (I would like not to use window$ in any
operation at all but I'm a computer sciences student and my school is
"microsofted" :)))
Thanks everyone.
On Thu, 30 Jan 2003 01:06:57 +0530
"Jeetu Golani" <j_golani@softhome.net> wrote:
> 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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--------------
Luís Henriques
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