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Edit: I have tried mounting the sd-card with an empty ext4-partition, and it worked just fine, but after I ran debootstrap on the sd-card, the problem reappeared with identical symptoms.


I want to mount an ext4-formatted sd-card, but

# mount -t ext4 /dev/block/mmcblk1p1 mountpoint

returns

mount: mounting /dev/block/mmcblk1p1 on mountpoint/ failed: Invalid argument

So far I have:

  • made sure the sd-card itself is OK (mounts fine on my debian laptop)

  • made sure the block device is the right one

  • replaced mount with busybox mount , which is a different binary, but gives the same error

The mountpoint exists, and the kernel supports ext4. My device is a rooted Samsung Galaxy Tab S2 running a Lineage OS 14.1 ROM (Android 7.1), SELinux is set to permissive.


Any pointers are appreciated!

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Does sdcard mount Android storage setting?

Run blkid command, see what say about partition.

Also what is mountpoint? I.E. /mnt/sd-ext

If you call mount like this

# mount -t ext4 /dev/block/mmcblk1p1 mountpoint

You have to be in same directory as mountpoint

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