Symptom
The computer stops responding ("freezes") at the Happy Mac icon during the system startup process.
This occurs most often in configurations that involve AppleShare IP Servers acting as Macintosh Manager Servers. However, it can happen to any computer with a hard disk that was initialized using the version of Drive Setup included with Mac OS 9.0 through 9.0.4, or by choosing the Erase Disk command from the Special menu. Normally the issue occurs on computers with a very large number of files (greater than 100 000); and it may occur after large numbers of files were moved, copied, or deleted.
Solution
Repair the affected volume with Disk First Aid version 8.6 or later. If you reinitialize the hard disk using the Erase Disk option in the Special menu, be sure to use Disk First Aid afterwards to repair the volume.
You may download Disk First Aid 8.6.1 from software download document 75102: "
Disk First Aid 8.6.1: Software and Information"