I no longer can boot into 10.5. I get stuck at the grey screen with the apple logo and clock that eventually changes to the "no" symbol and clock. The only fixes I found online (that I understood) were to repair the disk and permissions using the install disk. I tried this with no luck. I am willing to reinstall OS X but I do not want to lose my Windows partition. I have the Windows 7 beta and no longer have the ISO disk and am not sure if I can redownload that anymore. Either way, I'd rather not have to reinstall Windows too. So please, if anyone has any suggestions to get me to boot into OS X let me know. Otherwise, can I reinstall OS X without effecting the Windows partition??? FYI - I lost the ability to boot OSX soon after I installed the Windows Home Server disk on the OSX partition. The new HP servers claim to be compatible with OSX... maybe not so much yet.