I don't want to use fat32, I want use the more stable ext2.

2 Answers 2


You cannot use anything but FAT for the external SDCard. Android will not mount the card if it is not FAT.

  • And the internal memory what uses, that depends on the ROM?
    – Gabriel
    May 31, 2011 at 15:42
  • Internal SDCard? I believe that is also FAT. as for the other areas of the internal storage, like /system and such is ext4 starting with 2.3. Prior to that it used yaffs2. Dec 17, 2011 at 16:33

I've managed to do it on Harmony developer board using adb shell:

adb shell "mount -t ext2 /dev/block/mmcblk3p1 /mnt/sdcard"

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