我要评论建立一个普通的linux分区（主分区、逻辑分区均可）
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
以sdb6为例，可以看到分区的十六进制编码是83，即普通的linux分区。
修改分区类型的十六进制编码
//t命令：改写分区十六进制编码 command (m for help): t partition number (1-6): 6 //l命令可以查看不同分区的十六进制编码，交换分区为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 //分区表写入磁盘并退出 command (m for help): w the partition table has been altered! calling ioctl() to re-read partition table. syncing disks.
格式化交换分区
mkswap /dev/sdb6 setting up swapspace version 1, size = 4194204 kib no label, uuid=40eff2c0-3f6b-440e-bc2a-f71d3d5581a7
启用交换分区
swapon /dev/sdb6
查看交换分区加载状态
free
total used free shared buffers cached
mem: 1030108 160768 869340 264 12040 56188
-/+ buffers/cache: 92540 937568
swap: 6291352 0 6291352
停用交换分区
swapoff /dev/sdb6
p.s.
不能直接使用mount命令挂载swap分区，因为swap分区是没有挂载点的。
直接修改/etc/fstab配置文件，使系统启动时自动挂载：
/dev/sdb6 swap swap defaults 0 0 //查看交换分区 swapon -s filename type size used priority /dev/sda2 partition 2097148 0 -1 /dev/sdb6 partition 4194204 0 -2
总结
以上所述是小编给大家介绍的linux添加swap分区的方法，希望对大家有所帮助
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