我正在尝试修复 graid mini 1TB 外置硬盘上的 GPT 损坏分区表。以下是 gdisk 的报告:
root@philippe-desktop:/home/philippe/thomasdisk# gdisk /dev/sdb
GPT fdisk (gdisk) version 0.8.8
Caution: invalid main GPT header, but valid backup; regenerating main header
from backup!
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: damaged
****************************************************************************
Caution: Found protective or hybrid MBR and corrupt GPT. Using GPT, but disk
verification and recovery are STRONGLY recommended.
****************************************************************************
Command (? for help): ?
b back up GPT data to a file
c change a partition's name
d delete a partition
i show detailed information on a partition
l list known partition types
n add a new partition
o create a new empty GUID partition table (GPT)
p print the partition table
q quit without saving changes
r recovery and transformation options (experts only)
s sort partitions
t change a partition's type code
v verify disk
w write table to disk and exit
x extra functionality (experts only)
? print this menu
Command (? for help): v
No problems found. 262157 free sectors (128.0 MiB) available in 2
segments, the largest of which is 262151 (128.0 MiB) in size.
Command (? for help): p
Disk /dev/sdb: 1953546304 sectors, 931.5 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): FE2326A4-F411-489E-B0D9-D2D9EF21A00C
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 1953546270
Partitions will be aligned on 8-sector boundaries
Total free space is 262157 sectors (128.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 40 409639 200.0 MiB EF00 EFI System Partition
2 409640 1953284119 931.2 GiB AF00 G-RAID mini
Command (? for help):
据我了解,gdisk 能够自动解决损坏问题,只需按下w
即可修复我的磁盘,但我不确定,因为通常v
(验证)选项应该向我提出恢复选项。
我可以安全地去按吗w
?我已经按了sgdisk -b backup.gpt /dev/sdb
附言:如果这个问题与主题无关,请将我重定向到正确的网站
答案1
如果您花几分钟阅读上面的输出,您会发现gdisk
它告诉您该做什么(它发现了一个问题:invalid main GPT header, but valid backup;
,并为您采取了行动:regenerating main header from backup!
。它还提出了建议:disk verification and recovery are STRONGLY recommended.
——您可能应该遵循该建议)。
基于验证没有返回任何问题的事实,您可能可以写出分区布局 - 我的理解是gdisk
将使用并写出重新生成的 GPT 数据。
如果你想明确的在您的操作中,恢复菜单有一个选项可以使用备份 GPT 标头(重建/替换主 GPT 标头),您可以专门调用它,这似乎是正确的操作(前提是您看到的 GPT 布局上面看起来合理 - 否则您可能必须手动重建分区布局)。