It looks like I am in deep trouble. A day ago I created an encrypted partition on my USB using the Tails disk utility and set a pass phrase to "remember until I logout". When I rebooted and tried to start Tails again I was unsuccessful. So I started my Windows OS and tried to open my USB drive contents but a message appeared saying "You need to format your disk again in order to use this USB". So I formatted the flash drive using the default FAT32 format but I was shocked to discover my USB space was not 16 GB; it was 6.8 GB, which means the encrypted partition of some 7 GB is not appearing. I again installed Tails on that 6.8GB space but when I started Tails again there was no encrypted partition appearing there either. So how can I empty my USB once again? How can I delete that encrypted partition? Also for future reference, how do I deal with the encrypted partitions using Tails?
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dd if=/dev/urandom of=yourdisk bs=4k(they keys are really all you need to erase, and I assume they're stored right at the beginning of the partition, but I didn't check). – Jan 14 '15 at 14:56diskmgmton Windows, can you see the paritions there? (note that deleting them there will not erase them securely, I'm just curious if they show up at all, or if you're only looking for a drive inMy Computerwhich won't show up because Windows can't recognize the encrypted filesystem). – Jan 14 '15 at 14:58