Konsultan IT dan jaringan Area Flores

Sometimes when you have a mmc that has been corrupted by virus, you cann’t do anything. When you want to remove the file in that in MMC, it will say that the file was corrupted or the file read only file system . So we can not remove even we in root account . If you have file that you want recover, just save it first to your harddisk , cause after format, the file in MMC will be delete .
To format , first open terminal :

fdisk -l

This command to show the disk that mounted in your system
example

Disk /dev/mmcblk0: 1027 MB, 1027604480 bytes
4 heads, 16 sectors/track, 31360 cylinders
Units = cylinders of 64 * 512 = 32768 bytes
Disk identifier: 0×00000000
Device Boot Start End Blocks Id System

then unmount it ( x is depend on your memory )

umount /dev/mmcblkx

Format it by typing :

mkfs.vfat /dev/mmcblkx

That’s all
Doing it by your own risk