• linux下将mbr分区转换为gpt分区


    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。

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  • 原文地址:https://www.cnblogs.com/sky-cheng/p/15064324.html
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