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אבדתי FAKE PARTITION TABLE בכונן GPT

מייקי

‏ ת.הצטרפות: 22/04/2006 · הודעות: 692 · מיקום: גליל

פורסם: 10/05/2016 - 09:40
נושא ההודעה: אבדתי FAKE PARTITION TABLE בכונן GPT

קוד:

HI,
I've a, BIOS based, dual-boot desktop, runnung both (fully updated as of yesterday) Arch-64/Windows 10 (originally Win7).
The PC has 3 drives: sda (optical), sdb (2.7 TB GPT based HD, originally containg 8 GPT partitions), and sdc (1.5 TB, MBR based HD).
The sdc contains GRUB and Windows.
The sdb contains 8 Linux and data GPT partitions.
Yesterday, while shutting down Windows, the system hung for a moment than shut down.
Eversince, I can only boot into Windows as Arch won't find linux root..

I would appreciate a detailed help regaining full acsess to all my sb partition (especially a 2.6 TB ntfs partition containg many many photos...).
Thanks up front!

I've booted with SystemRescue CD and got the following: (I'm especially worried about the 64b overlap-see below).
GParted reported thar sdb has no valid fake msdos partition table, but in view of the above overlap, I'm afraid to try to restore.

תודה מייקי

קוד:

% lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 238.5G 0 disk
└─sda1 8:1 0 238.5G 0 part
sdb 8:16 0 2.7T 0 disk
├─sdb1 8:17 0 734M 0 part
└─sdb2 8:18 0 40M 0 part
sdc 8:32 0 1.4T 0 disk
├─sdc1 8:33 0 89.9G 0 part
├─sdc2 8:34 0 149M 0 part
├─sdc3 8:35 0 1.1T 0 part
└─sdc4 8:36 0 208.4G 0 part
sr0 11:0 1 460.2M 0 rom /livemnt/boot
loop0 7:0 0 338.5M 1 loop /livemnt/squashfs
root@sysresccd /root % gdisk /dev/sdb
GPT fdisk (gdisk) version 1.0.1

Partition table scan:
MBR: MBR only
BSD: not present
APM: not present
GPT: present

Found valid MBR and GPT. Which do you want to use?
1 - MBR
2 - GPT
3 - Create blank GPT

Your answer: 2
Using GPT and creating fresh protective MBR.
Warning! Main partition table overlaps the first partition by 64 blocks!
You will need to delete this partition or resize it in another utility.

Command (? for help): p
Disk /dev/sdb: 5860524911 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): CC8A67FE-F174-45C4-9EFD-A6402499F11E
Partition table holds up to 248 entries
First usable sector is 64, last usable sector is 1503168
Partitions will be aligned on 8-sector boundaries
Total free space is 1 sectors (512 bytes)

Number Start (sector) End (sector) Size Code Name
2 172 82091 40.0 MiB 0700 ISOHybrid1