fdisk /dev/sdbCommand (m for help): pDisk /dev/sdb: 8589 MB, 8589934592 bytes255 heads, 63 sectors/track, 1044 cylinders, total 16777216 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk 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：改寫分區(qū)十六進(jìn)制編碼Command (m for help): t Partition number (1-6): 6//L命令可以查看不同分區(qū)的十六進(jìn)制編碼，交換分區(qū)為82Hex code (type L to list codes): 82Changed system type of partition 6 to 82 (Linux swap / Solaris)Command (m for help): pDisk /dev/sdb: 8589 MB, 8589934592 bytes255 heads, 63 sectors/track, 1044 cylinders, total 16777216 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk 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//分區(qū)表寫入磁盤并退出Command (m for help): wThe partition table has been altered!Calling ioctl() to re-read partition table.Syncing disks.

mkswap /dev/sdb6Setting up swapspace version 1, size = 4194204 KiBno label, UUID=40eff2c0-3f6b-440e-bc2a-f71d3d5581a7

free       total    used    free   shared  buffers   cachedMem:    1030108   160768   869340    264   12040   56188-/+ buffers/cache:   92540   937568Swap:   6291352     0  6291352

/dev/sdb6        swap          swap  defaults    0 0//查看交換分區(qū) swapon -sFilename        Type    Size  Used  Priority/dev/sda2                partition  2097148 0  -1/dev/sdb6                partition  4194204 0  -2