[aruggirello]

WinXP in a (properly configured) VM boots, runs faster than Win7, Win10 - at least under Linux. It is plagued by compatibility issues though - eg. no modern HTTPS, no modern browser, .NET issues, insecure SMB... you really need to know what you're doing.

But armed with TuneXP 15, a recent AVG, CCleaner XP 1.38, sdelete, and WinKeyFinder175 (to be used together with UMSKT, basically the only way to reactivate it when your tweaking efforts inevitably trigger the - now broken - activation), you can start your adventure. No modern browser, mind you, though eg. "supermium 122" works, and don't forget read-only VMs or snapshots are your friends. I couldn't get virtio working, because VirtualBox 7 had a regression with it, so stick with emulated AHCI since VirtualBox 6 is so ...passé