page counter next up previous contents
Next: 格式化分割區 Up: RAW IMAGE 重新分割 Previous: 備份後卸載   Contents   DYWANG_HOME

開始重新分割

  1. fdisk 重新分割 crtefi15g-20190112.img。 
    [root@controller src]# fdisk crtefi15g-20190112.img 
Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.


Command (m for help): p

Disk crtefi15g-20190112.img: 15.7 GB, 15728640000 bytes, 30720000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x55654248

                 Device Boot      Start         End      Blocks   Id  System
crtefi15g-20190112.img1   *        2048      329727      163840   83  Linux
crtefi15g-20190112.img2          329728    29689855    14680064   8e  Linux LVM
crtefi15g-20190112.img3        29689856    29700095        5120   ef  EFI (FAT-12/16/32)
  2. 刪除第一分割區。 
    Command (m for help): d
Partition number (1-3, default 3): 1
Partition 1 is deleted

Command (m for help): p

Disk crtefi15g-20190112.img: 15.7 GB, 15728640000 bytes, 30720000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x55654248

                 Device Boot      Start         End      Blocks   Id  System
crtefi15g-20190112.img2          329728    29689855    14680064   8e  Linux LVM
crtefi15g-20190112.img3        29689856    29700095        5120   ef  EFI (FAT-12/16/32)
  3. 建立新的分割區 2M ，type 是 EFI。 
    Command (m for help): n
Partition type:
   p   primary (2 primary, 0 extended, 2 free)
   e   extended
Select (default p): p
Partition number (1,4, default 1): 
First sector (2048-30719999, default 2048): 
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-329727, default 329727): +2M
Partition 1 of type Linux and of size 2 MiB is set

Command (m for help): t
Partition number (1-3, default 3): 1
Hex code (type L to list all codes): ef
Changed type of partition 'Linux' to 'EFI (FAT-12/16/32)'

Command (m for help): p

Disk crtefi15g-20190112.img: 15.7 GB, 15728640000 bytes, 30720000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x55654248

                 Device Boot      Start         End      Blocks   Id  System
crtefi15g-20190112.img1            2048        6143        2048   ef  EFI (FAT-12/16/32)
crtefi15g-20190112.img2          329728    29689855    14680064   8e  Linux LVM
crtefi15g-20190112.img3        29689856    29700095        5120   ef  EFI (FAT-12/16/32)
  4. 刪除第三個分割區。 
    Command (m for help): d
Partition number (1-3, default 3): 
Partition 3 is deleted
  5. 新增第三個分割區。 
    Command (m for help): n
Partition type:
   p   primary (2 primary, 0 extended, 2 free)
   e   extended
Select (default p): 
Using default response p
Partition number (3,4, default 3): 
First sector (6144-30719999, default 6144): 
Using default value 6144
Last sector, +sectors or +size{K,M,G} (6144-329727, default 329727): 
Using default value 329727
Partition 3 of type Linux and of size 158 MiB is set

Command (m for help): p

Disk crtefi15g-20190112.img: 15.7 GB, 15728640000 bytes, 30720000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x55654248

                 Device Boot      Start         End      Blocks   Id  System
crtefi15g-20190112.img1            2048        6143        2048   ef  EFI (FAT-12/16/32)
crtefi15g-20190112.img2          329728    29689855    14680064   8e  Linux LVM
crtefi15g-20190112.img3            6144      329727      161792   83  Linux
  6. 新增的第三個分割區，位置是在第二個分割區，但編號是 3，所以要重新排序，x 命令進入專家命令。 
    Partition table entries are not in disk order

Command (m for help): x
  7. f 命令調整編號。 
    Expert command (m for help): f
Done.
  8. r 退出專家命令模式。 
    Expert command (m for help): r
  9. p 查看分割區，已重新排序。 
    Command (m for help): p

Disk crtefi15g-20190112.img: 15.7 GB, 15728640000 bytes, 30720000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x55654248

                 Device Boot      Start         End      Blocks   Id  System
crtefi15g-20190112.img1            2048        6143        2048   ef  EFI (FAT-12/16/32)
crtefi15g-20190112.img2            6144      329727      161792   83  Linux
crtefi15g-20190112.img3          329728    29689855    14680064   8e  Linux LVM
  10. 設定第二個分割區為 Linux 開機分割區。 
    Command (m for help): a
Partition number (1-3, default 3): 2

Command (m for help): p

Disk crtefi15g-20190112.img: 15.7 GB, 15728640000 bytes, 30720000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x55654248

                 Device Boot      Start         End      Blocks   Id  System
crtefi15g-20190112.img1            2048        6143        2048   ef  EFI (FAT-12/16/32)
crtefi15g-20190112.img2   *        6144      329727      161792   83  Linux
crtefi15g-20190112.img3          329728    29689855    14680064   8e  Linux LVM
  11. 寫入分割表並退出。 
    Command (m for help): w
The partition table has been altered!

Syncing disks.