Mac Pro - Stuck on white start up screen

First, you need to try [fixing the hard drive with Disk Utility|http://support.apple.com/kb/TS1417]. If that doesn't solve the problem - and it probably won't, as the symptoms you're seeing probably indicate that some vital system files are damaged - you can simply reinstall Snow Leopard. It won't erase the hard drive unless you explicitly do so using Disk Utility.

Of course, you'd be wise to make a backup of your data before reinstalling. You can use Disk Utility for this while booted from the Mac OS X install disk, assuming you have another hard drive on which to store the backup. See #8 on [this page|http://www.macworld.com/article/51199/2006/06/julyworkingmac.html].

You should have had a backup all along. If you had, you'd be in much less of a mess now. For help figuring out how to set up a backup, look at my [Mac Backup Guide|http://www.reedcorner.net/thomas/guides/backups>.

[This Apple read gives a logical sequence of steps for troubleshooting and resolving your problem|http://support.apple.com/kb/TS2570].

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Hello Matt:

I suggest you reset the SMC and PRAM:

http://docs.info.apple.com/article.html?path=Mac/10.6/en/26871.html
http://support.apple.com/kb/HT1411

Barry

Yep, as you know this problem is solved on the other thread.

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