After the successful migration a Windows virtual machine boots into the Blue screen of Death (BSOD) or System Repair screen:
- STOP 0x7B - (Windows 7).
- INACCESSIBLE BOOT DEVICE - (Windows 10).
Conflicting drivers/interface configuration.
NOTE: Before proceeding with the further actions please create a backup of the virtual machine
Launch Parallels Desktop but do not start a migrated virtual machine.
Open your virtual machine's configuration > Hardware > Boot Order and add the following string into the Boot Flags field:
Boot virtual machine in Recovery mode:
- Start the virtual machine;
Wait once a Windows Recovery window appears:
Press F1 (if it doesn't work, try pressing it along with Fn) to enter Recovery Environment and then select the Troubleshoot option:
Click the Advanced options button:
In Advanced Options click on "Command Prompt":
4. Using the Command Prompt switch to
Note: in some cases, Windows can be installed on a drive
D:\ or some other letter. It depends on your particular setting.
- To check where Windows is installed, execute:
The output should be similar to:
You need to find the drive letter where OS is installed (from the example above, this is drive E:).
Once you found the drive, change directory to the required folder:
E: cd Windows\System32\config
5. Load the SYSTEM registry hive:
reg load hklm\fix_SYSTEM SYSTEM
6. Launch Registry Editor to make necessary changes:
and hit Return in order to start Registry Editor.
7. Find and edit the following registry key:
in the right pane locate the value 'UpperFilters' and set it to 'PartMgr'.
in the right pane locate the value 'LowerFilters' and delete it.
NOTE: in some cases 'UpperFilters' may have several values, some of them might be needful for system load. Such as 'gpt_loader'. Such values also should be left.
ALSO, if your drive is encrypted by PointSec software, you should leave 'prot_2k' value as well.
8. Repeat step 7 for the following key:
9. Close Registry Editor, return to Command Prompt and unload the SYSTEM hive:
reg unload hklm\fix_SYSTEM
10. Restart the virtual machine. Once you confirm that it boots fine, revert the changes performed in step 2.