Not only does this work great, I can confirm that in the year of our lord 2022 you can use an mSATA drive with an mSATA to IDE adapter in the Pismo. Search on 68kmla for the information if you want to know 100% the drive you’re trying is going to work.

I can’t believe my Pismo has a 128G SSD in it! It’s faster, and though I don’t carry it around, it’s a little lighter too.

(and also, THANK YOU Erik, steps 6-12 aren’t needed just to swap the HDD, though I do recommend thermal paste of course for anyone who is able to do it).