以下操作基于 飞凌嵌入式iMX6开发板
命令行测试法
iMX6开发板 支持 SD 卡热插拔。插上 SD 卡后系统会自动将其挂载到 / media 目录。同时终端会打印关于 SD 卡的信息，由于存在很多种卡，显示的信息可能会有差别：
root@freescale ~$ mmc2: new high speed SDHC card at address aaaa
mmcblk1: mmc2:aaaa SS08G 7.40 GiB
mmcblk1: p1
mmcblk1: p1 p2
EXT3-fs: barriers not enabled
kjournald starting. Commit interval 5 seconds
EXT3-fs (mmcblk1p2): using internal journal
EXT3-fs (mmcblk1p2): recovery complete
EXT3-fs (mmcblk1p2): mounted filesystem with writeback data mode
挂载普通 8G SD 卡
root@freescale /$ ls /media
mmcblk0p1 mmcblk1p1 mmcblk1p2
查看 SD 卡中的文件 , 命令如下：
root@freescale /media$ ls -l /media/mmcblk1p1/
drwxr-xr-x 2 root root 4096 May 22 2015 ??
drwxr-xr-x 2 root root 4096 Nov 23 2014 LOST.DIR
-rwxr-xr-x 1 root root 22612 Jan 15 2015 MLO
-rwxr-xr-x 1 root root 3236 Jan 15 2015 app
drwxr-xr-x 2 root root 4096 May 15 2015 ok335-s
root@freescale /media$ ls -l /media/mmcblk1p2/
drwxr-sr-x 2 root root 4096 Sep 22 2013 bin
drwxr-sr-x 2 root root 4096 Apr 5 2013 dev
drwxr-sr-x 26 root root 4096 Jan 13 2015 etc
drwxr-sr-x 7 root root 4096 Jun 16 2014 forlinx
drwxr-sr-x 4 root root 4096 May 20 2014 home
drwxr-sr-x 8 root root 4096 May 20 2014 lib
drwxr-sr-x 13 root root 4096 Jan 13 2015 media
drwxr-sr-x 3 root root 4096 Apr 5 2013 mnt
drwxr-xr-x 3 root root 4096 May 21 2014 opt
drwxr-sr-x 2 root root 4096 Apr 5 2013 proc
drwxr-sr-x 2 root root 4096 May 20 2014 sbin
drwxr-sr-x 2 root root 4096 Jan 2 2014 srv
drwxr-sr-x 2 root root 4096 Apr 5 2013 sys
lrwxrwxrwx 1 root root 8 Sep 17 2013 tmp -> /var/tmp
drwxr-sr-x 9 root root 4096 Jan 2 2014 usr
drwxr-sr-x 8 root root 4096 May 20 2014 var
sdxc 卡设置使用格式话成 ext2 或 ext3 或 ext4
root@freescale /$ mkfs.ext2 /dev/mmcblk1p1
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
3923968 inodes, 15691520 blocks
784576 blocks (5%) reserved for the super user
First data block=0
Maximum filesystem blocks=16777216
479 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
重启iMX6开发板
mmc2: new high speed SDXC card at address 59b4
mmcblk1: mmc2:59b4 SDU1 59.8 GiB
mmcblk1: p1
root@freescale /media$ cd mmcblk1p1/
root@freescale /media/mmcblk1p1$ ls
lost+found
128G 的 sdxc 卡识别
mmc2: new high speed SDXC card at address 59b4
mmcblk1: mmc2:59b4 SDU1 119 GiB
mmcblk1: p1
EXT2-fs (mmcblk1p1): warning: mounting unchecked fs, running e2fsck is recommend
Ed
root@freescale ~$ cd /media/
root@freescale /media$ ls
mmcblk0p1 mmcblk1p1
root@freescale /media$ cd mmcblk1p1/
root@freescale /media/mmcblk1p1$ ls
lost+found
备注： 目前 iMX6开发板 测试支持 最大 32GiB SDHC 卡 ，最大 128GiB SDXC 卡 ( 格式化成 ext2/3/4 使用 ) 。
文章转载飞凌官网，详情请联系飞凌：https://www.forlinx.com/article_view_137.html