gdisk转fdisk

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