格式化分割區

1. 先卸除 /dev/loop0。

   [root@controller src]# kpartx -d /dev/loop0
   [root@controller src]# losetup -d /dev/loop0 
   [root@controller src]# lsblk /dev/loop0
   

2. 使用 losetup 將 crtefi15g-2019-112.img 設為 loopback device。

   [root@controller src]# losetup /dev/loop0 crtefi15g-20190112.img 
   [root@controller src]# lsblk /dev/loop0
   NAME      MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
   loop0       7:0    0 14.7G  0 loop 
   ├─loop0p1 259:0    0    2M  0 loop 
   ├─loop0p2 259:1    0  158M  0 loop 
   └─loop0p3 259:2    0   14G  0 loop
   

3. 將 crtefi15g-2019-112.img 的第一個分割區格式化為 fat。

   [root@controller src]# mkfs.fat /dev/loop0p1 
   mkfs.fat 3.0.20 (12 Jun 2013)
   unable to get drive geometry, using default 255/63
   

4. 將 crtefi15g-2019-112.img 的第二個分割區格式化為 ext3。

   [root@controller src]# mkfs.ext3 /dev/loop0p2 
   mke2fs 1.42.9 (28-Dec-2013)
   Discarding device blocks: done                            
   Filesystem label=
   OS type: Linux
   Block size=1024 (log=0)
   Fragment size=1024 (log=0)
   Stride=0 blocks, Stripe width=0 blocks
   40480 inodes, 161792 blocks
   8089 blocks (5.00%) reserved for the super user
   First data block=1
   Maximum filesystem blocks=67371008
   20 block groups
   8192 blocks per group, 8192 fragments per group
   2024 inodes per group
   Superblock backups stored on blocks: 
   	8193, 24577, 40961, 57345, 73729
   
   Allocating group tables: done                            
   Writing inode tables: done                            
   Creating journal (4096 blocks): done
   Writing superblocks and filesystem accounting information: done