Run Disk Utility before installing OSX Lion

I ran into a problem installing Lion on my Mac Pro. The install screen appeared to be stuck at 33 minutes with no sign of progress. Several reboots later and still no luck, I noticed that there were a lot of disk errors in the install log that appeared to stop the installer in it’s tracks. It appears the installer doesn’t validate your hard disk before installing and is unable to report failures when encountered. So before installing, run ‘Disk Utility’ and save yourself the three hours I wasted.

If you do reach this point and there’s no sign of progress. You can still boot back into Snow Leopard by selecting ‘startup disk’ from the Installer’s menus.

2 Comments Add yours

  1. michael says:

    Hi Paul, i’ve been having the same problem – stuck at 33 minutes with lots of errors in the log file. Could you explain what you did to fix the problem? Can you “validate” a hard disk in Disk Utility?

    Thanks

  2. Paul says:

    Apple have a page that explains how to use Disk Utility

    http://support.apple.com/kb/TS1417

    Use the Verify and Repair options. It worked for me.

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