[ubuntu] invalid partition table

[pael2]

Hi guys,

I know topic was before but I will be very greatful to do it step by step with me in order not to lose any data...

I started with


sudo fdisk -l



Disk /dev/loop0: 1.2 GiB, 1246838784 bytes, 2435232 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 /dev/sda: 238.5 GiB, 256060514304 bytes, 500118192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 4E26783C-2BB9-4F5F-824B-45681A6A0C36

Device Start End Sectors Size Type
/dev/sda1 2048 1050623 1048576 512M EFI System
/dev/sda2 1050624 2050047 999424 488M Linux filesystem
/dev/sda3 2050048 500117503 498067456 237.5G Linux filesystem


Disk /dev/sdb: 14.9 GiB, 16008609792 bytes, 31266816 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
Disklabel type: dos
Disk identifier: 0x0008f854

Device Boot Start End Sectors Size Id Type
/dev/sdb1 * 2048 31266815 31264768 14.9G c W95 FAT32 (LBA)



I stopped instalation of ubuntu-gnome 16.10 and can't boot older partions now.
Is there a way to reload previous boot configuration or get access to data at least ?...


Huge thanks in advance...

edit:



TestDisk 7.0, Data Recovery Utility, April 2015
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org

Disk /dev/sda - 256 GB / 238 GiB - CHS 31130 255 63
Partition Start End Size in sectors
>* FAT32 0 32 33 65 101 36 1048576 [NO NAME]
P Linux 65 101 37 127 155 28 999424
P Linux 127 155 29 127 220 29 4096
L Linux 5333 249 37 7357 63 2 32503808
L Linux 12898 163 2 13812 77 25 14678016
L Linux 14026 23 14 18889 38 29 78125056
L Linux Swap 18889 70 62 19147 142 3 4149248
L Linux 19147 174 36 31130 223 5 192509952





it is more or less what was before

[TheFu]

Make a bit-for-bit backup to another disk - that is step 1.

Have you run boot-repair or update-grub?

[pael2]

I tried with no success.
I can access data from partition with data, I am afraid the only way is to copy files one by one and then format whole disk...

I will wait if someone has better idea if not... :)

[TheFu]

What, exactly, did you try? Can't read minds here. ;)

[pael2]

Well, I do not what I changed in mean time but I've tried install once again and it could have been install besides old linux :-)... I lost windows and have plenty of strange partitions but it is not important :D ... I will clean it up later after EXTERNAL backup...

[oldfred]

Your testdisk with logical outputs must have been BIOS/MBR configuration.
But current partitions are UEFI/gpt which totally removed all the MBR partitions.

If you recover MBR partitions, you will erase gpt, but do not expect to recover everything as at least parts of drive were overwritten with new install.
If testdisk's deeper search shows files that is best way to recover files as then it includes file names. Using photorec can potentially recover more files, but will not nave file name just extension.