A20 adb shell命令實現硬盤分區

1'輸入busybox fdisk /dev/block/sda ；

2'在Command (m for help):後輸入m，查看幫助；

    Command (m for help): m
m
Command Action
a       toggle a bootable flag
b       edit bsd disklabel
c       toggle the dos compatibility flag
d       delete a partition
l       list known partition types
n       add a new partition
o       create a new empty DOS partition table
p       print the partition table
q       quit without saving changes
s       create a new empty Sun disklabel
t       change a partition's system id
u       change display/entry units
v       verify the partition table
w       write table to disk and exit
x       extra functionality (experts only)

3'輸入查看p,若若是以前用過就會有顯示，

Command (m for help): p
p

Disk /dev/block/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

         Device Boot      Start         End      Blocks  Id System

4'選擇刪除d,

Command (m for help): d
d
No partition is defined yet!

5'新建分區n,

Command (m for help): n
n
Command action
   e   extended
   p   primary partition (1-4)

6'選擇p,

P
P
Partition number (1-4):

7'選擇分區的數目，我選擇1，

Partition number (1-4): 1
1
First cylinder (1-60801, default 1):

8‘ 直接回車（主分區的起始位置）；默認爲1,默認就好；

First cylinder (1-60801, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-60801, default 60801):

9’這個是定義分區大小的，+499000M 就是大小爲+499000M ；固然您也能夠根據p提示的單位cylinder的大小來算，而後來指定 End的數值。回頭看看是怎麼算的；仍是用+499000M這個辦法來添加，這樣能直觀一點。我硬盤是500G，因此就是499G，若是您想添加一個10G左右大小的分區，請輸入 +10000M ；

Last cylinder or +size or +sizeM or +sizeK (1-60801, default 60801): +499000M
+499000M

10‘經過t來指定分區類型t；

Command (m for help): t
t
Selected partition 1
Hex code (type L to list codes):

11'在這裏輸入L，就能夠查看分區類型的id了

Hex code (type L to list codes): L
L

 0 Empty                  1b Hidden Win95 FAT32     9f BSD/OS
 1 FAT12                  1c Hidden W95 FAT32 (LBA) a0 Thinkpad hibernation
 4 FAT16 <32M             1e Hidden W95 FAT16 (LBA) a5 FreeBSD
 5 Extended               3c Part.Magic recovery    a6 OpenBSD
 6 FAT16                  41 PPC PReP Boot          a8 Darwin UFS
 7 HPFS/NTFS              42 SFS                    a9 NetBSD
 a OS/2 Boot Manager      63 GNU HURD or SysV       ab Darwin boot
 b Win95 FAT32            80 Old Minix              b7 BSDI fs
 c Win95 FAT32 (LBA)      81 Minix / old Linux      b8 BSDI swap
 e Win95 FAT16 (LBA)      82 Linux swap             be Solaris boot
 f Win95 Ext'd (LBA)      83 Linux                  eb BeOS fs
11 Hidden FAT12           84 OS/2 hidden C: drive   ee EFI GPT
12 Compaq diagnostics     85 Linux extended         ef EFI (FAT-12/16/32)
14 Hidden FAT16 <32M      86 NTFS volume set        f0 Linux/PA-RISC boot
16 Hidden FAT16           87 NTFS volume set        f2 DOS secondary
17 Hidden HPFS/NTFS       8e Linux LVM              fd Linux raid autodetect
Hex code (type L to list codes):

12'選擇83，

Hex code (type L to list codes): 83
83

14’在看一下p

Command (m for help): p
p

Disk /dev/block/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

         Device Boot      Start         End      Blocks  Id System
/dev/block/sda1               1       60668   487315678+ 83 Linux

確實出來啦！

15‘建立w

Command (m for help): w
w
The partition table has been altered!

Calling ioctl() to re-read partition table

16’對分區進行格式化，以及加載；

   輸入busybox mkfs.ext2 /dev/block/sda

root@android :/ # busybox mkfs.ext2 /dev/block/sda
busybox mkfs.ext2 /dev/block/sda
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
30531584 inodes, 122096646 blocks
6104832 blocks (5%) reserved for the super user
First data block=0
Maximum filesystem blocks=125829120
3727 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000

...........

(須要注意若是以前mount過，必定要Umount掉 --busybox umount /dev/block/sda不然會出錯

busybox mkfs.ext2 /dev/block/sda
mkfs.ext2: can't format mounted filesystem)

17‘掛載mount -t ext2 /dev/block/sda /mnt/sata

OK  ,buysybox df -h一下 ：

root@android :/ # busybox df -h
busybox df -h
Filesystem                Size      Used Available Use% Mounted on
tmpfs                   153.4M     32.0K    153.4M   0% /dev
tmpfs                   153.4M         0    153.4M   0% /mnt/asec
tmpfs                   153.4M         0    153.4M   0% /mnt/obb
/dev/block/system       504.4M    257.9M    246.5M  51% /system
/dev/block/data         504.4M     57.7M    446.7M  11% /data
/dev/block/cache        252.1M      4.3M    247.8M   2% /cache
/dev/block/vold/93:72
                          2.1G     48.0K      2.1G   0% /mnt/sdcard
/dev/block/vold/93:72
                          2.1G     48.0K      2.1G   0% /mnt/secure/asec
/dev/block/sda          458.5G     62.5M    435.2G   0% /mnt/sata

出來啦，激動吧！