Mac OS X v10.6: Gray screen after installing Snow Leopard

Your Mac may start up to a gray screen after upgrading from Mac OS X v10.5 to Mac OS X v10.6 Snow Leopard. This may occur if a previous Mac OS X v10.5 software update had been downloaded using Software Update, but not completely installed, before installing Snow Leopard.

This article has been archived and is no longer updated by Apple.

If you have already upgraded to Mac OS X v10.6 and are experiencing this issue, reinstall Mac OS X v10.6.

If you haven't yet upgraded from Mac OS X v10.5, finish any incomplete software update installations by restarting your Mac. Once your Mac has restarted you can proceed with upgrading to Mac OS X v10.6 Snow Leopard.

See also: Mac OS X: Gray screen appears during startup.

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