nas brot # gdisk /dev/sde
GPT fdisk (gdisk) version 0.8.10

Caution: invalid backup GPT header, but valid main header; regenerating
backup header from main header.

Warning! Main and backup partition tables differ! Use the 'c' and 'e' options
on the recovery & transformation menu to examine the two tables.

Warning! One or more CRCs don't match. You should repair the disk!

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: damaged

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Caution: Found protective or hybrid MBR and corrupt GPT. Using GPT, but disk
verification and recovery are STRONGLY recommended.
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Command (? for help): o
This option deletes all partitions and creates a new protective MBR.
Proceed? (Y/N): y

Command (? for help): n
Partition number (1-128, default 1):
First sector (34-9767541134, default = 2048) or {+-}size{KMGTP}:
Last sector (2048-9767541134, default = 9767541134) or {+-}size{KMGTP}: 1026047
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300): ef00
Changed type of partition to 'EFI System'

Command (? for help): n
Partition number (2-128, default 2):
First sector (34-9767541134, default = 1026048) or {+-}size{KMGTP}:
Last sector (1026048-9767541134, default = 9767541134) or {+-}size{KMGTP}: 2050047
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300): fd00
Changed type of partition to 'Linux RAID'

Command (? for help): n
Partition number (3-128, default 3):
First sector (34-9767541134, default = 2050048) or {+-}size{KMGTP}:
Last sector (2050048-9767541134, default = 9767541134) or {+-}size{KMGTP}:
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300):
Changed type of partition to 'Linux filesystem'

Command (? for help): p
Disk /dev/sde: 9767541168 sectors, 4.5 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): D69BC615-B1AC-4A38-BA71-791CD94C2154
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 9767541134
Partitions will be aligned on 2048-sector boundaries
Total free space is 2014 sectors (1007.0 KiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048         1026047   500.0 MiB   EF00  EFI System
   2         1026048         2050047   500.0 MiB   FD00  Linux RAID
   3         2050048      9767541134   4.5 TiB     8300  Linux filesystem

Command (? for help): w

Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!

Do you want to proceed? (Y/N): y
OK; writing new GUID partition table (GPT) to /dev/sde.
The operation has completed successfully.