Linux中GPT分区

一 分区模式之MBR

1、主分区不超过4个

2、单个分区容量最大2TB

 

二 分区模式之GPT

1、主分区个数“几乎”没有限制。

在GPT的分区表中最多支持128个主分区。

2、单个分区容量“几乎”没有限制。

在GPT的分区模式中，每个分区的大小突破了MBR分区2TB限制。

75.png

 

三 实战

[root@localhost ~]# parted

GNU Parted 3.1

Using /dev/sda

Welcome to GNU Parted! Type 'help' to view a list of commands.

(parted) help

align-check TYPE N check partition N for TYPE(min|opt)

alignment

help [COMMAND] print general help, or help on COMMAND

mklabel,mktable LABEL-TYPE create a new disklabel (partition

table)

mkpart PART-TYPE [FS-TYPE] START END make a partition

name NUMBER NAME name partition NUMBER as NAME

print [devices|free|list,all|NUMBER] display the partition table, available

devices, free space, all found partitions, or a particular partition

quit exit program

rescue START END rescue a lost partition near START and

END

rm NUMBER delete partition NUMBER

select DEVICE choose the device to edit

disk_set FLAG STATE change the FLAG on selected device

disk_toggle [FLAG] toggle the state of FLAG on selected

device

set NUMBER FLAG STATE change the FLAG on partition NUMBER

toggle [NUMBER [FLAG]] toggle the state of FLAG on partition

NUMBER

unit UNIT set the default unit to UNIT

version display the version number and

copyright information of GNU Parted

(parted) select /dev/sdc

Using /dev/sdc

(parted) mklabel gpt

(parted) print

Model: ATA VBOX HARDDISK (scsi)

Disk /dev/sdc: 8590MB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

 

Number Start End Size File system Name Flags

 

(parted) print all

Model: ATA VBOX HARDDISK (scsi)

Disk /dev/sda: 107GB

Sector size (logical/physical): 512B/512B

Partition Table: msdos

Disk Flags:

 

Number Start End Size Type File system Flags

1 1049kB 525MB 524MB primary xfs boot

2 525MB 32.7GB 32.2GB primary xfs

3 32.7GB 54.2GB 21.5GB primary xfs

4 54.2GB 107GB 53.2GB extended

5 54.2GB 65.0GB 10.7GB logical xfs

6 65.0GB 69.2GB 4295MB logical linux-swap(v1)

7 69.2GB 107GB 38.1GB logical xfs

 

 

Model: ATA VBOX HARDDISK (scsi)

Disk /dev/sdb: 8590MB

Sector size (logical/physical): 512B/512B

Partition Table: msdos

Disk Flags:

 

Number Start End Size Type File system Flags

1 1049kB 3147MB 3146MB primary

2 3147MB 6368MB 3221MB primary

3 6368MB 8590MB 2222MB extended

5 6369MB 7443MB 1074MB logical

6 7444MB 8590MB 1146MB logical

 

 

Model: ATA VBOX HARDDISK (scsi)

Disk /dev/sdc: 8590MB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

 

Number Start End Size File system Name Flags

 

 

(parted) mkpart

Partition name? []? A

File system type? [ext2]?

Start? 0

End? 2000

Warning: The resulting partition is not properly aligned for best performance.

Ignore/Cancel? Cancel

(parted) mkpart

Partition name? []?

File system type? [ext2]?

Start? 1

End? 2000

(parted) print

Model: ATA VBOX HARDDISK (scsi)

Disk /dev/sdc: 8590MB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

 

Number Start End Size File system Name Flags

1 1049kB 2000MB 1999MB

 

(parted) mkpart test 2000 3000

(parted) print

Model: ATA VBOX HARDDISK (scsi)

Disk /dev/sdc: 8590MB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

 

Number Start End Size File system Name Flags

1 1049kB 2000MB 1999MB

2 2000MB 3000MB 1000MB test

 

(parted) mkpart abc 2500 3500

Warning: You requested a partition from 2500MB to 3500MB (sectors

4882812..6835937).

The closest location we can manage is 3000MB to 3500MB (sectors

5859328..6835937).

Is this still acceptable to you?

Yes/No? yes

(parted) print

Model: ATA VBOX HARDDISK (scsi)

Disk /dev/sdc: 8590MB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

 

Number Start End Size File system Name Flags

1 1049kB 2000MB 1999MB

2 2000MB 3000MB 1000MB test

3 3000MB 3500MB 500MB abc

 

(parted) rm 3

(parted) print

Model: ATA VBOX HARDDISK (scsi)

Disk /dev/sdc: 8590MB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

 

Number Start End Size File system Name Flags

1 1049kB 2000MB 1999MB

2 2000MB 3000MB 1000MB test

 

(parted) mkpart abc 3000 4000

(parted) print

Model: ATA VBOX HARDDISK (scsi)

Disk /dev/sdc: 8590MB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

 

Number Start End Size File system Name Flags

1 1049kB 2000MB 1999MB

2 2000MB 3000MB 1000MB test

3 3000MB 4000MB 1000MB abc

 

(parted) mkpart aa 4000 5000

(parted) mkpart bb 5000 6000

(parted) print

Model: ATA VBOX HARDDISK (scsi)

Disk /dev/sdc: 8590MB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Disk Flags:

 

Number Start End Size File system Name Flags

1 1049kB 2000MB 1999MB

2 2000MB 3000MB 1000MB test

3 3000MB 4000MB 1000MB abc

4 4000MB 5000MB 999MB aa

5 5000MB 6000MB 1000MB bb

 

(parted) unit GB

(parted) quit

Information: You may need to update /etc/fstab.