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I need to get virtual machine running. (I have windows 8 pro, hypervisor feature installed and checked virtualization settings in BIOS). I see hypervisor is not running message when I try to start a new VM. After bit of searching, I was instructed to set hypervisorlaunchtype to Auto.
When I tried to setup using bcdedit, I got the following error :
The boot configuration data store could not be opened.
The volume for a file has been externally altered so that the opened file is no longer valid.
Bit of history - I have windows 8 on dell inspiron 3520. I migrated my SATA HD to SSD (Disk copied using EZGigIV). I am using SSD as primary disk. I have no issues in booting.
I tried bootrec /rebuildallbcd. I got the following error :
A device attached to the system is not functioning
Please advice how to fix this problem.
Lokeshwer
Posted 2013-10-22T18:23:07.347
Reputation: 51
@Lokeshwer - Any luck resolving/ getting around? – Alex S – 2017-04-24T11:46:12.233
Nope. I reached to MS tech support. No solution provided. I had to rebuild from scratch – Lokeshwer – 2017-04-24T15:27:48.140
which bcdedit command have you use? – magicandre1981 – 2013-10-23T04:06:51.827
never know there are multiple bcdedit. I used the one in system32 and in recovery console – Lokeshwer – 2013-10-23T04:27:53.033
I mean the command line. What have you entered into the cmd? – magicandre1981 – 2013-10-23T17:06:07.177
bcdedit /set hypervisorlaunchtype auto – Lokeshwer – 2013-10-24T09:10:04.983
this should be the correct command: bcdedit /set {current} hypervisorlaunchtype auto – magicandre1981 – 2013-10-24T16:50:18.903
I still get the same error – Lokeshwer – 2013-10-24T17:13:45.250
Have a look at this thread and especially the last two entries relating to recreating the BCD. Ensure first that your backups are in good shape and that you have a boot DVD or USB for Windows.
– harrymc – 2014-03-01T09:25:09.570I was already able to boot. I just cannot set hypervisorlaunchtype – Lokeshwer – 2014-03-01T12:21:06.230
Have you run bcdedit using "Run an administrator" ? – harrymc – 2014-03-01T18:45:51.477
Yes. I tried even from recovery console – Lokeshwer – 2014-03-02T03:45:39.503