一、查看现有分区
[root@localhost /]# fdisk -l 磁盘 /dev/sda:299.4 GB, 299439751168 字节,584843264 个扇区 Units = 扇区 of 1 * 512 = 512 bytes 扇区大小(逻辑/物理):512 字节 / 512 字节 I/O 大小(最小/最佳):512 字节 / 512 字节 磁盘标签类型:dos 磁盘标识符:0x000e7372 设备 Boot Start End Blocks Id System /dev/sda1 * 2048 2099199 1048576 83 Linux /dev/sda2 2099200 584843263 291372032 8e Linux LVM 磁盘 /dev/mapper/centos-root:53.7 GB, 53687091200 字节,104857600 个扇区 Units = 扇区 of 1 * 512 = 512 bytes 扇区大小(逻辑/物理):512 字节 / 512 字节 I/O 大小(最小/最佳):512 字节 / 512 字节 磁盘 /dev/mapper/centos-swap:16.8 GB, 16844324864 字节,32899072 个扇区 Units = 扇区 of 1 * 512 = 512 bytes 扇区大小(逻辑/物理):512 字节 / 512 字节 I/O 大小(最小/最佳):512 字节 / 512 字节 磁盘 /dev/mapper/centos-home:227.8 GB, 227826204672 字节,444973056 个扇区 Units = 扇区 of 1 * 512 = 512 bytes 扇区大小(逻辑/物理):512 字节 / 512 字节 I/O 大小(最小/最佳):512 字节 / 512 字节 [root@localhost /]#
磁盘标签类型:dos 既为mbr分区
二、利用gdisk工具进行分区转换
[root@localhost /]# yum install -y gdisk
转换/dev/sda2分区,sda1分区为系统启动分区,不需要转换
[root@localhost /]# gdisk /dev/sda2 GPT fdisk (gdisk) version 0.8.10 Partition table scan: MBR: not present BSD: not present APM: not present GPT: not present Creating new GPT entries. Command (? for help): w Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING PARTITIONS!! Do you want to proceed? (Y/N):
输入y,开始
OK; writing new GUID partition table (GPT) to /dev/sda2.
Warning: The kernel is still using the old partition table.
The new table will be used at the next reboot.
The operation has completed successfully.
[root@localhost /]#
查看分区类型
[root@localhost /]# fdisk -l /dev/sda2 WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion. 磁盘 /dev/sda2:298.4 GB, 298364960768 字节,582744064 个扇区 Units = 扇区 of 1 * 512 = 512 bytes 扇区大小(逻辑/物理):512 字节 / 512 字节 I/O 大小(最小/最佳):512 字节 / 512 字节 磁盘标签类型:gpt Disk identifier: CCBAA7C6-614C-4A45-BD26-2B2EDE14236D # Start End Size Type Name [root@localhost /]#
已经转换为GPT类型了,并且数据完好无损。