Disk Utility‘s "Scan image for Restore" process doesn‘t finish in Mac OS X 10.3

After using Mac OS X 10.3's Disk Utility to create a disk image of a volume, you may run into an issue in which a "Scan Image for Restore" scan won't finish. Disk Utility just sits there indefinitely.

What can you do? Force quit Disk Utility, and then perform one of our workarounds. This article applies for Mac OS X 10.3 through 10.3.9.

Tip: If you're checking out log files, the Console log displays messages such as these when the issue occurs:

open failed: Operation not supported asr: could not checksum slp_ipc
open failed: Operation not supported asr: could not checksum mDNSResponder
open failed: Operation not supported asr: could not checksum pppconfd

Solution

As a workaround, you can either:

• Create a disk image, using this method in Disk Utility: From the Images menu, choose New > Image from Folder, or...
  
  
• Open Terminal and type this (which is equivalent to "Scan Image for Restore"), then press Return:
  
  asr -imagescan -blockonly
  
  Tip: To learn more about the asr command, type "man asr" in Terminal.