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I'm trying to create a read-only disk image archive of a High Sierra installation to later clone to other hard drives. I have tested the source drive and it is fine. No failed sectors or other indicators of a failing drive. I used DriveDx to perform these tests.

However, when I start the archive in CCC 3.5.7 on an early 2008 MacBook running Lion, I am greeted with

CCC has detected a physical problem with one of your volumes.

The backup task is still running, and CCC will copy as many files as possible. Please note:

  • The first error occurred while trying to access:

    "/Volumes/Macintosh HD [Source]/.PKInstallSandboxManager-SystemSoftware/0A988266-8955-4100-BFD3-A3DA35DA92BB.sandbox/Root/Applications/iTunes.app/Contents/Info.plist"

  • CCC will make two attempts to back up damaged files

  • Physical errors may cause the backup task to take longer than normal.
  • You can stop the backup task at any time. CCC will pick up where it left off the next time you run this task.

Please click on the "?" button below to learn more about resolving media errors.

Why am I receiving this error? Will it affect future drive restores from this image archive?

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2 Answers 2

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In the end, I settled with Disk Utility. I know that CCC is typically faster since it copies in chunks but my goal was to create a one-time archive of an OS and then clone it to other drives whenever necessary so the benefit of CCC is less noticeable.

I found a forum post on Apple's forum about an issue that seemed similar or possibly the same. The accepted answer to that post suggested the older version of CCC was looking for mach_kernel files in the wrong place on the drive. Apparently, Yosemite and later now keep those files in a different location. Those particular kernel files are crucial to the boot process and the computer will not detect the clone partition as bootable unless those files are there. This explanation might explain my troubles since I'm using CCC 3.5.7 (unsupported) on Lion and the operating systems I was trying to image were High Sierra and El Capitan. Unfortunately, that forum post is lost in my browser history.

I never did try a new version of CCC because my early 2008 MacBook is incapable of running anything newer and I don't really have access to a newer Mac at the moment. I reverted to using disk utility which worked quite well. I created a read-only disk image and then, when I want to clone, mount the disk image and create a restore from the mounted image to the partition on the target hard disk.

Running Lion 10.7.5 on an early 2008 MacBook. CCC version 3.5.7.

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Mike Bombich, the developer/owner of CCC provides excellent support and in a timely fashion. You'd be much better advised to contact him vice post a plea for help here.

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  • I'm using an unsupported version so I may or may not receive help. I'll give it a shot anyway.
    – www139
    Commented Jun 2, 2018 at 0:30

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