chameleon

This list genuinely looks like some of the marketing they had around Win7 times. No joke.

Snap? Yep, advertised feature. Touchscreen stuff? Absolutely! Better search? Yeah, advertised (and it was true in Windows 7!). New app to make movies? They got it. I guess the Win 7 page was missing Widgets. That was a Vista feature instead…

IRCv3 has extended IRC quite a bit over the past decade, fixing a lot of minor pain points if clients support the fixed versions of the protocol.

Given that the UUID changed, you almost certainly made a new LUKS container, overwriting the old one. That’s bad, because the LUKS header is the only source of the actual encryption key that was used, and making a new one will overwrite both the main header as well as its backup copy immediately. Your password/keyfile/whatever is merely used to decrypt the part of the header that has the actual encryption key, and that’s gone in that case.

Unless you have access to a header backup from before that, there’s a fairly strong chance it’s irrecoverable. I’d suggest going through any archives you might have to see if you have such a backup - most of the instructions on the Gentoo wiki encourage making one, so you might have made one through the power of copying & pasting instructions. Should be a file of around 16MB.