Hi, I've got a dual boot system with 7ultimate on one HD ans XP on another HD, if I upgrade the XP to 7 pro and then to Win10 will the dual boot still work?
Unless you are running really old programs they most likely will just run on Windows 10. Some programs can be run with their compatibility settings adjusted. And a far better solution for maintaining any XP install would be to virtualize it and turn on only when you need to run any programs that refuse to run on Windows 10.
You should also look for updated version of those programs.
If you have specific program compatibility in mind let us know what the program is.
Dual-booting is tricky since Windows 8 and now Windows 10. Most likely it will appear to work but you may have to tweak the setting in both OSs to get them to play together properly.
Unless you are running really old programs they most likely will just run on Windows 10. Some programs can be run with their compatibility settings adjusted. And a far better solution for maintaining any XP install would be to virtualize it and turn on only when you need to run any programs that refuse to run on Windows 10.
You should also look for updated version of those programs.
If you have specific program compatibility in mind let us know what the program is.