I have an SSD installed on a mac I do not use, how do I use it on another desktop? Do I have to format an SSD from OS X in order to re-use it on an Windows desktop?
Or Is there no limitations to where to format the drive?
If you're referring to a standard 2.5" form factor SATA SSD drive then it should be able to be used elsewhere, internally on another system or in an external enclosure, supporting the same form factor. As to partitioning/formatting, if the target OS is Windows then I'd partition/format it under Windows.