I would say that it depends at which point you decide to "abandon" the repair. If you babando before the repair starts then YES .. however if you try to abandon half way through, you'll probably be looking at a recovery job .. Windows looks for a valid bootable partition and a few other files like boot.ini, Hal.dll, ntldr in order to "understand" that a previous XP install exists. Once gone (when trying to replace with new files) XP won't recognise the old partition and will probably only allow a NEW INSTALL which will remove all rights to tunning all your programs, not to mention as MS warn so often , that you could lose all files