Sunday, September 16, 2018

encryption - Windows 7 Enterprise with BitLocker: Blue screen after migrating HDD




I have two HP ProBook 6560b laptops, with one running Windows 7 Enterprise with BitLocker enabled. I am trying to test the scenario where one BitLocker-protected machine dies completely (i.e. perhaps motherboard failure), so I am just moving the encrypted hard drive to the exact same model laptop. This is all fine, I can decrypt the hard drive with my recovery key.



However, as soon as the I've typed the recovery key in the machine blue screens. If I put the HDD back in the original machine it works fine. I am currently using TPM only as the authentication means to BitLocker.



Blue Screen details:
KERNEL_DATA_INPAGE_ERROR
0x0000007a
pci.sys




My understanding is that you are able to move around a BitLocker-protected drive, as long as you know the recovery key and put the drive in a relatively similar machine. I've tried repairing the Windows installation, booting into safe mode etc but no luck.



Thanks in advance.


Answer



Following the advice of dsolimano in the comment section above, I ended up taking a different approach to this scenario.



I took drive A from machine A, and added it to machine B as an extra drive (through an external HDD enclosure). I was able to unlock the drive way using my recovery key and access my data normally.


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