1、df -h查看sd卡是否已經掛載，如果已經掛載，使用umount指令先卸載掉。

2、cat proc/partitions查看sd卡的分區名

3、fdisk /dev/mmcblk1

輸入m查看，輸入p查看當前分區配置情況

Command (m for help): p
p
Disk /dev/mmcblk1: 1947 MB, 2041577472 bytes, 3987456 sectors
62304 cylinders, 4 heads, 16 sectors/track
Units: sectors of 1 * 512 = 512 bytes

Device Boot StartCHS EndCHS StartLBA EndLBA Sectors Size Id Type
/dev/mmcblk1p1 0,1,1 1023,3,16 16 1024015 1024000 500M c Win95 FAT32 (LBA)
/dev/mmcblk1p2 1023,3,16 1023,3,16 1024016 3987455 2963440 1446M c Win95 FAT32 (LBA)

4、如果已經存在分區，先將這些分區刪除掉

輸入d，如果有多個就多次輸入d

5、開始新增兩個盤，輸入n新增，輸入p打印查看，輸入t修改格式類型（輸入l能查看所有支持的類型）， c Win95 FAT32 (LBA)是FAT格式，最后輸入w進行保存配置

Command (m for help): n n Partition typep primary partition (1-4)e extended p p Partition number (1-4): 2 2 First sector (1024016-3987455, default 1024016): Using default value 1024016 Last sector or +size{,K,M,G,T} (1024016-3987455, default 3987455): Using default value 3987455Command (m for help): t t Partition number (1-4): 2 2 Hex code (type L to list codes): l l0 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 ... Hex code (type L to list codes): c c Changed system type of partition 2 to c (Win95 FAT32 (LBA))Command (m for help): p p Disk /dev/mmcblk1: 1947 MB, 2041577472 bytes, 3987456 sectors 62304 cylinders, 4 heads, 16 sectors/track Units: sectors of 1 * 512 = 512 bytesDevice Boot StartCHS EndCHS StartLBA EndLBA Sectors Size Id Type /dev/mmcblk1p1 0,1,1 1023,3,16 16 1024015 1024000 500M c Win95 FAT32 (LBA) /dev/mmcblk1p2 1023,3,16 1023,3,16 1024016 3987455 2963440 1446M c Win95 FAT32 (LBA)Command (m for help): w w

6、創建好后，需要進行格式化一下，我這里都格式化成vfat

mkdosfs -F 32 /dev/mmcblk1p1
mkdosfs -F32 /dev/mmcblk1p2

7、最后掛載到想要的目錄就可以了
mount -t vfat /dev/mmcblk1p1 /mnt/sdcard
mount -t vfat /dev/mmcblk1p2 /mnt/sdcard2

查看一下，兩個目錄都掛載成功了，可以分別使用了

ls -al
total 8
drwxr-xr-x 4 root root 80 Jan 2 14:25 .
drwxr-xr-x 20 root root 460 Jan 2 14:19 …
drwxrwxrwx 2 root root 4096 Jan 1 1970 sdcard
drwxrwxrwx 2 root root 4096 Jan 1 1970 sdcard2

總結

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