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Error encrypting disk: Unknown error code 188 with FV2 on Casper 9.31


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We've setup a Disk Encryption configuration and policy for FileVault2 (institutional key). We're intermittently getting the following error after imaging a system:
"Error encrypting disk: Unknown error code 188"

The policy trigger is set to "Recurring check-in" (every 5 mins) and the execution frequency is set to "Once per computer".

I've tried manually pushing the policy using the <sudo jamf policy -event "" -verbose> and <sudo jamf policy -none -verbose> commands but the policy isn't found.

When I tried to enable FileVault via System Preferences manually, an error came up stating that the boot drive config was corrupted.
Any ideas on what to do besides re-image and hoping for the best?...

Best answer by rich.trouton

It sounds like your recovery partition isn't being created or is being created incorrectly as part of the imaging process. Having a working Recovery HD is a requirement for FileVault 2, so the encryption process will stop as a failsafe measure if it detects an absent or non-working Recovery HD.

For more details, see this thread:
https://jamfnation.jamfsoftware.com/discussion.html?id=7249

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Forum|alt.badge.img+31
  • Employee
  • 920 replies
  • Answer
  • June 26, 2014

It sounds like your recovery partition isn't being created or is being created incorrectly as part of the imaging process. Having a working Recovery HD is a requirement for FileVault 2, so the encryption process will stop as a failsafe measure if it detects an absent or non-working Recovery HD.

For more details, see this thread:
https://jamfnation.jamfsoftware.com/discussion.html?id=7249


Forum|alt.badge.img+2
  • Author
  • New Contributor
  • 1 reply
  • June 26, 2014

You're right!

I repaired/restored the Recovery HD and it successfully pulled the encryption policy.

Thanks!


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