MS-DOS - yes that's where I got my RSI from - all the command line syntax and setting up Config.sys and Autoexec.bat files to get DOS programmes working, memory management, disk optimisation and the like - those were the days.

I had to install Windows for Workgroups, Word, Excel, Powerpoint, Access and Publisher on about 400 PCs with only floppy disks back in the 90s. About 60+ floppies per PC to do that lot!
Ok, so I don't use W10 for diagnostics - earlier versions of DB had issues with the Actia driver signing - as the drivers have to be signed in Windows 10 64 Bit, so you may be ok with a 32 Bit version, hard to say.