I regularly study for professional certifications, not because my employer asks for it so nicely, but mainly because it's an opportunity to learn something new, or to delve into something in a more profound way. It also forces me to plan some study time to it, because work always takes priority. My certification exams I take remotely with OnVue, which avoids taking a trip to a Brussels exam center; OnVue unfortunately does not support Linux laptops (boo!). Because of this, I'm forced to use my work laptop for this. Imagine my surpise when a few days before my next AWS certification exam, I discovered that the network port to the exam site was blocked by our corporate firewall. Knowing that this would not be solved within a few days, I decided to shop or a second hand Macbook Air, which I found for the reasonable price of 150 Euro. This was a Macbook Air from 2013 (so 9 years old at that time), running Big Sur. I wipe the MacOS installation and upgraded to Ventura with OpenCore legacy patcher (OCLP). Later upgrades to Sonoma delivered a slower, but workable environment, though the upgrade to Sequoia was too ambitous for a snappy desktop experience. I expected the laptop to have a short life with me, as it was an intermediate solution, but lo and behold, in 2026 I'm still using this laptop, even though I swapped MacOS with Fedora. That Macbook screen is just too lovely to dump this laptop !