分区测试的时候发现之前用gdisk分区之后，就无法用fdisk进行分区了，哪怕格式化了也不行，通过fdisk 查看硬盘，发现硬盘都变成了GPT分区，无法通过fdisk进行分区操作，所以要通过parted 删除其GPT分区
[root@docker-server-1 ~]# fdisk -l
Disk /dev/sdb: 999.7 GB, 999653638144 bytes
255 heads, 63 sectors/track, 121534 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000dac36
Device Boot Start End Blocks Id System
Disk /dev/sda: 999.7 GB, 999653638144 bytes
255 heads, 63 sectors/track, 121534 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00048d6c
Device Boot Start End Blocks Id System
/dev/sda1 * 1 1306 10485760 83 Linux
/dev/sda2 1306 3346 16384000 82 Linux swap / Solaris
/dev/sda3 3346 121535 949353472 83 Linux
1.选择sdc进行删除GPT分区操作
[root@docker-server-1 ~]# parted /dev/sdc
GNU Parted 2.1
Using /dev/sdc
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted)
2.通过mklabel建立msdos分区
(parted) mklabel
New disk label type? msdos
Warning: The existing disk label on /dev/sdc will be destroyed and all data on this disk will be lost. Do you want to continue?
Yes/No? Yes
Warning: /dev/sdc contains GPT signatures, indicating that it has a GPT table. However, it does not have a valid fake msdos partition table, as it should. Perhaps it was corrupted -- possibly by a program that doesn't understand
GPT partition tables. Or perhaps you deleted the GPT table, and are now using an msdos partition table. Is this a GPT partition table?
Yes/No? Yes
3.再次通过fdisk 查看sdc，就不会提示GPT分区了