Thread: partition tables lost

i have dedicated server 2 500gb harddisks , partition tabels on both disks see lost.
@ least guy tech support there told me. strange situation, have not done sure.
not made backup on tables before ;o(((

have started reading through postings , have collected here found out , know old state - not much.

have box online booted recovery system.
there chance filesystem back?

there 6 gb ram , 2 500gb disks in box, installed ubuntu 8.04 default disk partioning settings proposed installation on /dev/sda. other drive kept unused time.

code:

root@mybox123:~# fdisk -lu  disk /dev/sda: 500.1 gb, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors units = sectors of 1 * 512 = 512 bytes sector size (logical/physical): 512 bytes / 512 bytes i/o size (minimum/optimal): 512 bytes / 512 bytes disk identifier: 0x00000000  disk /dev/sda doesn't contain valid partition table  disk /dev/sdb: 500.1 gb, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors units = sectors of 1 * 512 = 512 bytes sector size (logical/physical): 512 bytes / 512 bytes i/o size (minimum/optimal): 512 bytes / 512 bytes disk identifier: 0x00000000  disk /dev/sdb doesn't contain valid partition table

code:

root@mybox123:~# parted /dev/sdb gnu parted 2.3 using /dev/sdb welcome gnu parted! type 'help' view list of commands. (parted) rescue 0 976773168 error: /dev/sdb: unrecognised disk label

code:

testdisk 6.13, data recovery utility, november 2011 christophe grenier <grenier@cgsecurity.org> http://www.cgsecurity.org os: linux, kernel 3.2.14-live-ig2 (#1 smp tue may 8 12:49:15 cest 2012) x86_64 compiler: gcc 4.6 compilation date: 2012-02-05t07:15:52 ext2fs lib: 1.42, ntfs lib: 10:0:0, reiserfs lib: none, ewf lib: none /dev/sda: lba, hpa, lba48, dco support /dev/sda: size       976773168 sectors /dev/sda: user_max   976773168 sectors /dev/sda: native_max 976773168 sectors /dev/sda: dco        976773168 sectors /dev/sdb: lba, hpa, lba48, dco support /dev/sdb: size       976773168 sectors /dev/sdb: user_max   976773168 sectors /dev/sdb: native_max 976773168 sectors /dev/sdb: dco        976773168 sectors warning: can't size disk /dev/mapper/control - 0 b - chs 1 1 1, sector size=512 warning: can't size disk /dev/md0 - 0 b - chs 1 2 4, sector size=512 hard disk list disk /dev/sda - 500 gb / 465 gib - chs 60801 255 63, sector size=512 - wdc wd5000aads-00s9b0, s/n:wd-wcav93359795, fw:01.00a01 disk /dev/sdb - 500 gb / 465 gib - chs 60801 255 63, sector size=512 - wdc wd5000aads-00s9b0, s/n:wd-wcav93359558, fw:01.00a01  partition table type (auto): intel disk /dev/sda - 500 gb / 465 gib - wdc wd5000aads-00s9b0 partition table type: intel  analyse disk /dev/sda - 500 gb / 465 gib - chs 60801 255 63 current partition structure:  partition sector doesn't have endmark 0xaa55 ask user vista mode computes lba chs disk /dev/sda - 500 gb / 465 gib - chs 60802 255 63 allow partial last cylinder : yes search_vista_part: 1  search_part() disk /dev/sda - 500 gb / 465 gib - chs 60802 255 63  results  interface_write()   no partition found or selected recovery sighup detected! testdisk has been killed.

also did smart testing , readout smartctl. output not show disk errors.


2nd disk /dev/sdb lateron put 1 max sized partion on it, formated ext3 , mounted it:

code:

mybox123:~# mkfs -t ext3 /dev/sdb1 mke2fs 1.41.11 (14-mar-2010) filesystem label= os type: linux block size=4096 (log=2) fragment size=4096 (log=2) stride=0 blocks, stripe width=0 blocks 30531584 inodes, 122096390 blocks 6104819 blocks (5.00%) reserved super user first data block=0 maximum filesystem blocks=4294967296 3727 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group superblock backups stored on blocks:         32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,         4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,         102400000  writing inode tables: done creating journal (32768 blocks): done writing superblocks , filesystem accounting information:  done  filesystem automatically checked every 30 mounts or 180 days, whichever comes first.  use tune2fs -c or -i override.  mybox123:~#  tune2fs -m 0 /dev/sdb1 tune2fs 1.41.11 (14-mar-2010) setting reserved blocks percentage 0% (0 blocks)  mybox123:/media# mount /dev/sdb1 /media/hd2

is there way guess how pation tabels should be?
know exact size of disks, ram (thus swap size ubuntu 8.04 propose). , 2nd disk full ext3 partition.

chance?

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