Which format did you choose when you erased? You need Mac OS Extended. I recommend that you erase it again and choose "zero all data" from the optionsmenu. Then, try reinstalling. ============================== Completed zeroing this time; think I ended it inadvertently and prematurely before. Used Extended format & still no go. The message is 'OS X won't install on this disk. OS X will not start up from this disk'. I installed the drive that was in my Cube with 10.4.7 on it, and it doesn't appear in the Startup Disk Sys Pref. I wonder if somehow it might be this Coolmax enclosure that's the cause. -- ron s -------------- next part -------------- An HTML attachment was scrubbed... URL: http://listserver.themacintoshguy.com/pipermail/x4u/attachments/20060826/bae9bb78/attachment-0001.html