This worked perfectly on my laptop with the latest Arch Linux (fully up-to-date). Thank you so much!
One small hiccup I encountered was that when I was trying to chroot to the mounted partitions, I got the following error: "chroot: cannot run command '/bin/bash': Exec format error". After a quick search I found out it was due to me using the 32-bit (i686) boot disc as the rescue disc, while I installed the 64-bit (x86-64) version of Arch on my laptop. After using the 64-bit version as the rescue disc, everything was flawless. You might want to update the blog post in case someone else encounters this :)
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