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VMware hard drive attach CID error

Posted on 2014-10-09
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Last Modified: 2014-10-15
I temporarily attached a vmware machine hd to another machine. Afterwards when I tried to run the original machine I am getting the error below. Please note the HD was disattached before launching the original machine.

The parent virtual disk has been modified since the child was created. The content ID of the parent virtual disk does not match the corresponding parent content ID in the child

Cannot open the disk 'C:\LT_Outlook_VM\VMwindows7demos-cl2-000005.vmdk' or one of the snapshot disks it depends on.

Module DiskEarly power on failed.

Failed to start the virtual machine.
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Question by:Techno 1
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LVL 117
ID: 40372112
This has occurred because you have attached the disk without the snapshot attached, and in doing so has changed the CID Checksum.

Now when you try to power up in the original machine, the parent disk and child disk (snapshot) do not match, and hence the CID Mismatch error.

It's quite simply to fix, and you just need to change the values in the virtual disk files.

see this VMware KB Article, and follow the examples

Resolving the CID mismatch error - VMware Knowledge Base

and then maybe you need to resolve the Snapshot you have attached...see my EE Article

HOW TO: VMware Snapshots :- Be Patient
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Author Comment

by:Techno 1
ID: 40372116
Thanks I have seen this article below. I am not very well versed in VM tech side. Can you please tell me which file to look for and where to change the info ?
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Author Comment

by:Techno 1
ID: 40372118
Can please also tell me how to attach the disk with snap shot for the next time ? I can open another ticket if you want. thx
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Author Comment

by:Techno 1
ID: 40372120
Just to add, I am using vmware workstation 10.1
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LVL 117
ID: 40372385
VMs with Snapshots are not easily transportable between VMs.

You need to edit the VMDK file, and change the values as per the example in the article.
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Author Comment

by:Techno 1
ID: 40373243
These are just examples. Can you please tell me which specific files (names) to edit the cid.
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LVL 117

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE) earned 500 total points
ID: 40373278
you need to look at, the following fles, and check the chain and checksum match

VMwindows7demos-cl2.vmdk
\VMwindows7demos-cl2-000001.vmdk
\VMwindows7demos-cl2-000002.vmdk
\VMwindows7demos-cl2-000003.vmdk
\VMwindows7demos-cl2-000004.vmdk
\VMwindows7demos-cl2-000005.vmdk
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Author Comment

by:Techno 1
ID: 40373414
got it. checking now. thx.
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