Windows won't recognise the drive because as you say it is formatted for the Amiga. You need to download the Amiga emulator WinUAE and access the drive using that.
I will PM you some details that you may need.
When you start the emulator set it up from the quick configuration as an A1200 with 4MB fast ram. Then go down to the harddrive section and you can add your harddrive into the emulator, then start the emulator and it should find and boot from the harddrive.