gdisk efi 分割區

1. gdisk 分割 USB 隨身碟 /dev/sdb，分割 EF00 的 EFI System 開機區。

   [root@dyw1 ~]# gdisk /dev/sdb
   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):
   First sector (34-61767646, default = 2048) or {+-}size{KMGTP}:
   Last sector (2048-61767646, default = 61767646) or {+-}size{KMGTP}: +100M
   Current type is 'Linux filesystem'
   Hex code or GUID (L to show codes, Enter = 8300): ef00
   Changed type of partition to 'EFI System'
   
   Command (? for help): n
   Partition number (2-128, default 2):
   First sector (34-61767646, default = 206848) or {+-}size{KMGTP}:
   Last sector (206848-61767646, default = 61767646) or {+-}size{KMGTP}: +500M
   Current type is 'Linux filesystem'
   Hex code or GUID (L to show codes, Enter = 8300): ef02
   Changed type of partition to 'BIOS boot partition'
   
   Command (? for help): n
   Partition number (3-128, default 3):
   First sector (34-61767646, default = 1230848) or {+-}size{KMGTP}:
   Last sector (1230848-61767646, default = 61767646) or {+-}size{KMGTP}: +26G
   Current type is 'Linux filesystem'
   Hex code or GUID (L to show codes, Enter = 8300): 8e00
   Changed type of partition to 'Linux LVM'
   
   Command (? for help): p
   Disk /dev/sdb: 61767680 sectors, 29.5 GiB
   Model: USB Flash Drive
   Sector size (logical/physical): 512/512 bytes
   Disk identifier (GUID): B9DE9231-21B1-42DB-BB35-CD774FD870E1
   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 61767646
   Partitions will be aligned on 2048-sector boundaries
   Total free space is 6012861 sectors (2.9 GiB)
   
   Number  Start (sector)    End (sector)  Size       Code  Name
      1            2048          206847   100.0 MiB   EF00  EFI System
      2          206848         1230847   500.0 MiB   EF02  BIOS boot partition
      3         1230848        55756799   26.0 GiB    8E00  Linux LVM
   
   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/sdb.
   Warning: The kernel is still using the old partition table.
   The new table will be used at the next reboot or after you
   run partprobe(8) or kpartx(8)
   The operation has completed successfully.