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 onlyBSD: not presentAPM: not presentGPT: 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 Name1 2048 2099199 1024.0 MiB 8300 Linux filesystem2 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 onlyBSD: not presentAPM: not presentGPT: 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: protectiveBSD: not presentAPM: not presentGPT: 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: protectiveBSD: not presentAPM: not presentGPT: 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 Name1 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
