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May
20
revised How to install Ubuntu with both disk encryption AND SSD caching
Added a clear title
May
20
reviewed Approve How can I find the version of Ubuntu that is installed?
May
18
comment Reboot after shutdown (Ubuntu 14.04 (also 12.04); Dell latitude E7440)
I basically went into my BIOS and turned off every option with the word "wake" in it... I don't need my computer raising itself from the dead like some zombie. This was an HP zBook 15, just in case any other people are suffering with it... it turned on in my bag and overheated itself through a 90 minute drive... seems to be fixed now.
May
18
reviewed Edit Does the terminal store data?
May
18
revised Does the terminal store data?
Fixed typo
May
18
reviewed Approve Change Aquaris phone ringtone
May
18
awarded  Benefactor
May
18
awarded  Scholar
May
18
revised How to install Ubuntu with both disk encryption AND SSD caching
Adding some notes post-bounty award.
May
18
accepted How to install Ubuntu with both disk encryption AND SSD caching
May
11
reviewed Approve Installed Ubuntu to my laptop and am stuck in Windows
May
10
reviewed Approve errno 5 during the installation of Xubuntu 14.04
May
10
reviewed Approve Wifi is not working on my Dell E6400
May
10
awarded  Promoter
May
8
comment How to install Ubuntu with both disk encryption AND SSD caching
1. The random disk wipe is a bit outdated on modern hardware - zeroes are enough to put the disk beyond most non-academic level measures and certainly beyond commercial disk recovery labs. Unless the volume you're using previously held sensitive data, it's unnecessary as all the blocks written to it will be encrypted ; because of wear-levelling algorithms you shouldn't use an SSD that had plaintext sensitive data on it at all. 2. Yes, there are 2 LUKS partitions, as I say in the text, you'll be prompted for both passphrases during boot.
May
8
reviewed Approve How to enable suggestion if command not found (“did you mean…” feature) in “bash” shell?
May
8
reviewed Reject After 13.10 update bluetooth will not turn on
May
8
answered How to install Ubuntu with both disk encryption AND SSD caching
May
8
comment How to install Ubuntu with both disk encryption AND SSD caching
Same procedure produces a working system in a LUKS install... but I suspect it adds a vulnerable non-encrypted cache to the ubuntu-vg volume group. Need to set up a dm-crypt PV on top of the second drive before making it into a cache pool.
May
8
comment How to install Ubuntu with both disk encryption AND SSD caching
Update - Have now tried the extra steps of adding the lines to /etc/initramfs-tools/modules here > bugs.launchpad.net/ubuntu/+source/lvm2/+bug/1423796/comments/6 - Success! Now have a VM with an "SSD cache". Will now try it out on my LUKS install VM and see what I get.