+ 0 Votes It would help Jacky Howe 6 years ago if you could be a bit more specific. What does this software do? There is a lot a software that will run from a flash drive. EG: Spybot, Sophos and some Operating Systems. Any clues? + 0 Votes Have a look here Jacky Howe 6 years ago http://www.msfn.org/board/Multiple-Partition-USB-Stick-Multi-Boot-OS-t69211.html + 0 Votes As a general rule of thumb (for me anyway) ... OldER Mycroft 6 years ago I have a habit of carrying a host of installers on flash drive. It makes it easier than getting a service machine online for something I've already downloaded. Also, apart from the 'portable apps' as mentioned by Scummy, any program that is not Registry-dependant will launch straight from a flash drive. Easiest way is to simply copy from the HDD install directory. I also carry every post-SP2 update on my flash drive - helpful when a user had the bright idea to delete "all those useless hotfix uninstallers" and then came unstuck!