It’s an old model (Acer One D257) Processor is Intel Atom. Memory is 1GB DDR3 with 320 GB of HDD. I currently Have MX 21 running on it, but I need to reinstall because I forgot the root password. Since I’m reinstalling the OS, I thought I’d ask here for recommendations for an OS that makes the most of this oldie.
You might be able to reset the root password by booting to single user, or using a rescue usb.
That said, you could take the chance to try one of the BSDs.