GPT分区工具：gdisk gdisk
gdisk分区
GPT 128个主分区
[root@zutuanxue ~]# gdisk -l /dev/sdc
[root@zutuanxue ~]# gdisk -l /dev/sdc 查看sdc信息
GPT fdisk (gdisk) version 1.0.3
Partition table scan:
MBR: MBR only
BSD: not present
APM: not present
GPT: not present ###GPT分区无法使用
***************************************************************
Found invalid GPT and valid MBR; converting MBR to GPT format
in memory.
***************************************************************
Disk /dev/sdc: 41943040 sectors, 20.0 GiB
Model: VMware Virtual S
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): B228357D-34EC-4E47-BB81-A7312F3BCF8D
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 41943006
Partitions will be aligned on 2048-sector boundaries
Total free space is 37748669 sectors (18.0 GiB)
Number Start (sector) End (sector) Size Code Name
1 2048 2099199 1024.0 MiB 8300 Linux filesystem
2 2099200 4196351 1024.0 MiB 8300 Linux filesystem
将MBR转换成GPT分区
[root@zutuanxue ~]# gdisk /dev/sdc
GPT fdisk (gdisk) version 1.0.3
Partition table scan:
MBR: MBR only
BSD: not present
APM: not present
GPT: not present
***************************************************************
Found invalid GPT and valid MBR; converting MBR to GPT format
in memory. THIS OPERATION IS POTENTIALLY DESTRUCTIVE! Exit by
typing 'q' if you don't want to convert your MBR partitions
to GPT format!
***************************************************************
Command (? for help): o
This option deletes all partitions and creates a new protective MBR.
Proceed? (Y/N): y
Command (? for help): w
Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!
Do you want to proceed? (Y/N): y
OK; writing new GUID partition table (GPT) to /dev/sdc.
The operation has completed successfully.
[root@zutuanxue ~]# gdisk -l /dev/sdc
GPT fdisk (gdisk) version 1.0.3
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present ###GPT可用了
Found valid GPT with protective MBR; using GPT.
Disk /dev/sdc: 41943040 sectors, 20.0 GiB
Model: VMware Virtual S
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): 7CA4232A-4A9E-467D-AADD-BB84DB2126E3
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 41943006
Partitions will be aligned on 2048-sector boundaries
Total free space is 41942973 sectors (20.0 GiB)
Number Start (sector) End (sector) Size Code Name
#再次分区
[root@zutuanxue ~]# gdisk /dev/sdc
GPT fdisk (gdisk) version 1.0.3
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Command (? for help): n
Partition number (1-128, default 1): 1
First sector (34-41943006, default = 2048) or {+-}size{KMGTP}:
Last sector (2048-41943006, default = 41943006) or {+-}size{KMGTP}: +2G
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300):
Changed type of partition to 'Linux filesystem'
Command (? for help): p
Disk /dev/sdc: 41943040 sectors, 20.0 GiB
Model: VMware Virtual S
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): 7CA4232A-4A9E-467D-AADD-BB84DB2126E3
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 41943006
Partitions will be aligned on 2048-sector boundaries
Total free space is 37748669 sectors (18.0 GiB)
Number Start (sector) End (sector) Size Code Name
1 2048 4196351 2.0 GiB 8300 Linux filesystem
Command (? for help): w
Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!
Do you want to proceed? (Y/N): y
OK; writing new GUID partition table (GPT) to /dev/sdc.
The operation has completed successfully.
[root@zutuanxue ~]# partprobe /dev/sdc
2.创建文件系统（格式化）CentOS8默认使用xfs
[root@zutuanxue ~]# mkfs.xfs -f /dev/sdc1
3.挂载
[root@zutuanxue ~]# mkdir /disk1
[root@zutuanxue ~]# mount -t xfs -o ro /dev/sdc1 /disk1 //手动挂载
[root@zutuanxue ~]# umount /disk1 ##卸载