Linux學習筆記（五） 新增swap分割槽

fdisk /dev/sdb

command (m for help): p

disk /dev/sdb: 8589 mb, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders, total 16777216 sectors
units = sectors of 1 * 512 = 512 bytes
sector size (logical/physical): 512 bytes / 512 bytes
i/o size (minimum/optimal): 512 bytes / 512 bytes
disk identifier: 0x740e36e3
device boot      start         end      blocks   id  system
/dev/sdb1              63     4194367     2097152+  83  linux
/dev/sdb2         4194368    16777215     6291424    5  extended
/dev/sdb5         4194431     8388735     2097152+  83  linux
/dev/sdb6         8388799    16777215     4194208+  83  linux

//t命令：改寫分割槽十六進製制編碼

command (m for help): t  
partition number (1-6): 6
//l命令可以檢視不同分割槽的十六進製制編碼，交換分割槽為82
hex code (type l to list codes): 82
changed system type of partition 6 to 82 (linux swap / solaris)
command (m for help): p
disk /dev/sdb: 8589 mb, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders, total 16777216 sectors
units = sectors of 1 * 512 = 512 bytes
sector size (logical/physical): 512 bytes / 512 bytes
i/o size (minimum/optimal): 512 bytes / 512 bytes
disk identifier: 0x740e36e3
device boot      start         end      blocks   id  system
/dev/sdb1              63     4194367     2097152+  83  linux
/dev/sdb2         4194368    16777215     6291424    5  extended
/dev/sdb5         4194431     8388735     2097152+  83  linux
/dev/sdb6         8388799    16777215     4194208+  82  linux swap / solaris
//分割槽表寫入磁碟並退出
command (m for help): w
the partition table has been altered!
calling ioctl() to re-read partition table.
syncing disks.

mkswap /dev/sdb6

setting up swapspace version 1, size = 4194204 kib

no label, uuid=40eff2c0-3f6b-440e-bc2a-f71d3d5581a7

swapon /dev/sdb6

free

total       used       free     shared    buffers     cached

mem:       1030108     160768     869340        264      12040      56188
-/+ buffers/cache:      92540     937568
swap:      6291352          0    6291352

swapoff /dev/sdb6

直接修改/etc/fstab配置檔案，使系統啟動時自動掛載：

/dev/sdb6               swap                    swap    defaults        0 0

//檢視交換分割槽

swapon -s
filename				type		size	used	priority
/dev/sda2                               partition	2097148	0	-1
/dev/sdb6                               partition	4194204	0	-2

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