//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.