Gentoo:使用Gdisk分区

fdisk不支持gpt分区，如果需要对GPT格式磁盘进行修改，可以使用gdisk(sys-apps/gptfdisk)。

gdisk /dev/sda

GPT fdisk (gdisk) version 0.8.6

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

Found valid GPT with protective MBR; using GPT.
Command (? for help): p
Disk /dev/sda: 500118192 sectors, 238.5 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): C72786B7-C1FB-4A60-8F5F-216FA9097A98
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 500118158
Partitions will be aligned on 2048-sector boundaries
Total free space is 123357805 sectors (58.8 GiB)

Number  Start (sector)    End (sector)  Size       Code  Name
1            2048          616447   300.0 MiB   2700  Basic data partition
2          616448          821247   100.0 MiB   EF00  EFI system partition
3          821248         1083391   128.0 MiB   0C01  Microsoft reserved part
4         1083392       376762367   179.1 GiB   0700  Basic data partition

Command (? for help): n
Partition number (5-128, default 5):
First sector (34-500118158, default = 376762368) or {+-}size{KMGTP}:
Last sector (376762368-500118158, default = 500118158) or {+-}size{KMGTP}: +100M
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300):
Changed type of partition to 'Linux filesystem'
Entering GPTPart::SetName(const UnicodeString...)

Command (? for help): n
Partition number (6-128, default 6):
First sector (34-500118158, default = 376967168) or {+-}size{KMGTP}:
Last sector (376967168-500118158, default = 500118158) or {+-}size{KMGTP}: +1G
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300): 8200
Changed type of partition to 'Linux swap'
Entering GPTPart::SetName(const UnicodeString...)

Command (? for help): n
Partition number (7-128, default 7):
First sector (34-500118158, default = 379064320) or {+-}size{KMGTP}:
Last sector (379064320-500118158, default = 500118158) 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'
Entering GPTPart::SetName(const UnicodeString...)

Command (? for help): p
Disk /dev/sda: 500118192 sectors, 238.5 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): C72786B7-C1FB-4A60-8F5F-216FA9097A98
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 500118158
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          616447   300.0 MiB   2700  Basic data partition
2          616448          821247   100.0 MiB   EF00  EFI system partition
3          821248         1083391   128.0 MiB   0C01  Microsoft reserved part
4         1083392       376762367   179.1 GiB   0700  Basic data partition
5       376762368       376967167   100.0 MiB   8300  Linux filesystem
6       376967168       379064319   1024.0 MiB  8200  Linux swap
7       379064320       500118158   57.7 GiB    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/sda.
The operation has completed successfully.