1. 查看emmc 的分区信息 ，发现只有mmcblk0boot0 和 mmcblk0boot1，用户是不能用的
#ls /dev/mmcblk0* -lh
brw-rw---- 1 0 0 179, 0 May 1 00:21 /dev/mmcblk0
brw-rw---- 1 0 0 179, 8 May 1 00:21 /dev/mmcblk0boot0
brw-rw---- 1 0 0 179, 16 May 1 00:21 /dev/mmcblk0boot1
还可以使用如下命令查看，发现 没有分区
#fdisk -l
Partition 1 has different physical/logical end:
phys=(486,254,63) logical=(487,29,54)
Disk /dev/mmcblk0: 7464 MB, 7826571264 bytes, 15286272 sectors
238848 cylinders, 4 heads, 16 sectors/track
Units: sectors of 1 * 512 = 512 bytes
Disk /dev/mmcblk0 doesn't contain a valid partition table
2. 使用fdisk 进行分区, 需要指定起始位置 和终止位置，需要保存
fdisk /dev/mmcblk0
然后使用 mkfs.ext2 /dev/mmcblk0p1
然后查看
#fdisk -l
Partition 1 has different physical/logical end:
phys=(486,254,63) logical=(487,29,54)
Disk /dev/mmcblk0: 7464 MB, 7826571264 bytes, 15286272 sectors
238848 cylinders, 4 heads, 16 sectors/track
Units: sectors of 1 * 512 = 512 bytes
Device Boot StartCHS EndCHS StartLBA EndLBA Sectors Size Id Type
/dev/mmcblk0p1 0,1,1 1023,3,16 16 1048591 1048576 512M 83 Linux
[root@Loongson-gz:/]#