Hi Alireza! Am Freitag, 3. April 2015, 14:23:14 schrieb Alireza Haghdoost: > Is there any way to delete existing ext4 file system and make the > volume un-mountable. I would assume that there should be some way to > discard filesystem metadata on the volume but I cannot find out how. wipefs But careful, it does what it says and you´d need a hex editor to undo. Ciao, -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html