Swapping hard drives, yes. Slackware boots on the original Windows 98 hard drive alongside Windows, and I have two other drives. One has BeOS 5.1, the other is

Swapping hard drives, yes. Slackware boots on the original Windows 98 hard drive alongside Windows, and I have two other drives. One has BeOS 5.1, the other is my test drive I use to try out other OSes (NetBSD is on it right now if I remember correctly, but it hangs during boot sometimes). PATA laptop drives are getting scarce but I do have a PATA-SD adapter lying about that works in a few OSes and I have no shortage of SD cards due to my Raspberry Pi addiction.