Thanks Michael. To provide a bit more detail, I run Win 10 on my Mac using BootCamp and use it exclusively for astro purposes. The latest update added a corrupted hiberfil.sys file to the installation package which basically puts Win into an infinite loop on startup after it's gone into hibernation (mine did after a few hours or inactivity). So because I couldn't boot my Win the usual way, I tried mounting it through a native Mac app for NTSF (Disk Utility) and when that didn't work I tried a few others. Essentially what I needed to do was to mount the drive, to allow myself read/write access (as opposed to just read access) and delete the corrupted hiberfil.sys. But for whatever reason that just wasn't going to happen, so I decided to cut my losses and just reinstall a fresh copy.
I'm in the same position as you - observatory is not an option, and dragging equipment out is a chore so I like to keep it simple too