Macintosh: Please Insert the Disk:... Error

This article discusses possible causes for receiving the error message "Please Insert the Disk: <Hard Disk>" when shutting down.
Application Specific

The combination of QuickTime 2.x, an IDE or SCSI hard drive, and various application programs can cause the error message "Please Insert the Disk: <Hard Disk>" to appear when shutting down.

This issue occurs with versions of Virex before 5.06.

Workarounds

There are several workarounds to the issue.
Hard Drive Driver Related

You may also receive this error message if you are using an incompatible driver with the installed system software.

Workarounds
Updated Apple driver software is available from the Apple Software Updates Web site at http://www.apple.com/swupdates/ .
Published Date: Feb 19, 2012