CentOS Linuxのパーティション分割ツール3選を解説

[root@TianRandai ~]#fdisk /dev/sdb #Operate on /devWelcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.


Command (m for help): n # Create a partition
Partition type:
   p primary (0 primary, 0 extended, 4 free)
   e extended
Select (default p): p #Partition type: p primary, p is primary, e is extended
Partition number (1-4, default 1): 1 # Specify the partition number
First sector (2048-41943039, default 2048): 
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-41943039, default 41943039): +2G
Partition 1 of type Linux and of size 2 GiB is set

Command (m for help): t #Specify the partition tag type
Selected partition 1
Hex code (type L to list all codes): 82
Changed type of partition 'Linux' to 'Linux swap / Solaris'

Command (m for help): w #Save operation
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.
Syncing disks. 

[root@TianRandai ~]#parted /dev/sdb mklabel gpt #Specify disk mode as GPT
Warning: The existing disk label on /dev/sdb will be destroyed and all data on this disk will be lost.
Do you want to continue?
Yes/No? yes                                                               
Information: You may need to update /etc/fstab.

[root@TianRandai ~]#parted /dev/sdb mkpart primary 0 2G #Create partition, partition type is primary, size is 2G
Warning: The resulting partition is not properly aligned for best performance.
Ignore/Cancel? i                                                          
Information: You may need to update /etc/fstab.

[root@TianRandai ~]#parted /dev/sdb print #View disk information                
Model: VMware, VMware Virtual S (scsi)
Disk /dev/sdb: 21.5GB
Sector size (logical/physical): 512BPartition Table: gpt
Disk Flags: 

Number Start End Size File system Name Flags
 1 17.4kB 2000MB 2000MB primary

[root@TianRandai ~]#parted /dev/sdb rm 1 #delete partition 1
Information: You may need to update /etc/fstab.

[root@TianRandai ~]#parted /dev/sdb print #View disk information again
 Model: VMware, VMware Virtual S (scsi)
Disk /dev/sdb: 21.5GB
Sector size (logical/physical): 512BPartition Table: gpt
Disk Flags: 
Number Start End Size File system Name Flags

[root@TianRandai ~]#mkfs #file system of each type
mkfs mkfs.cramfs mkfs.ext3 mkfs.fat mkfs.msdos mkfs.xfs
mkfs.btrfs mkfs.ext2 mkfs.ext4 mkfs.minix mkfs.vfat    
[root@TianRandai ~]#mkfs.ext4 /dev/sdb1 #Format /dev/sdb1 as ext4

[root@TianRandai ~]#mkdir /mnt/disk1 #make a disk1 directory under /mnt[root@TianRandai ~]#mount /dev/sdb1 /mnt/disk1 #mount the partition with the formatting number to /mnt/disk1 sprinkles girl
[root@TianRandai ~]#df -h #View the mount and usage
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 10G 4.5G 5.5G 45% devtmpfs 898M 0 898M 0% tmpfs 912M 88K 912M 1% /devtmpfs 912M 9.0M 903M 1% tmpfs 912M 0 912M 0% /sys/fs/dev/sda1 1014M 169M 846M 17% tmpfs 183M 20K 183M 1% /run/user/dev/sdb1 1.9G 5.7M 1.7G 1% /mnt

[root@TianRandai ~]#free -h #first look at the swap size
              total used free shared buff/cache available
Mem: 1.8G 483M 429M 10M 911M 1.1G
Swap: 2.0G 0B 2.0G
[root@TianRandai ~]#mkswap /dev/sdb1 #Format the /dev/sdb1 partition
mkswap: /dev/sdb1: warning: wiping old ext4 signature.
Setting up swapspace version 1, size = 1953104 KiB
no label, UUID=5d9a150e-c247-4c7f-a4be-273a72bd3b5a
[root@TianRandai ~]#swapon /dev/sdb1 #enable swap partition
[root@TianRandai ~]#free -h