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GPT磁盘管理

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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
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