Hello! I am currently running Hyper-V with Windows 8.1 Pro Hypervisor and VM. I recently installed an IBM M1015 SAS controller flashed to IT mode but when I try to add the physical disks to Hyper-V I get the error 'VM was reset because an unrecoverable error occurred on a virtual processor that caused a triple fault. If the problem persists, contact Product Support. (Virtual machine ID)'

This problem occurs with a single or multiple drives. All drives connected via local controller passthrough fine through Hyper-V. The VM is running just bare windows and the Hypervisor also has minimal software running.

The relevant hardware is as follows:

* Asrock H77 Pro4-M motherboard w/ 32gb ram

* 6x WD Black 2tb

* IBM M1015 SAS Controller flashed to IT Mode

Thanks

• Moved by Elton_JiMicrosoft contingent staff Monday, August 31, 2015 1:54 AM related

Hi Sir,

Here is System Center Virtual Machine Manager forum , in your case , it is a client hyper-v .

Based my experience , compatibility issue could be the cause  .

I also found the similar issue regarding " IBM M1015 SAS Controller ":

https://social.technet.microsoft.com/Forums/windows/en-US/1e8a992b-7631-4e16-8f0f-015f026c462e/hyper-v-virtual-machine-fails-to-start-when-physical-drives-are-added?forum=winserverhyperv

You may try to update the driver for the controller then check the result .

In addition , using pass-through disk will bring the drawbacks to VMs (such as , migration ) . As we known , there is slight performance difference between VHDX and pass-through disk .

I would suggest you to create vhdx file on physical disk for VMs .

Best Regards,

Elton Ji

Thanks for the suggestions they should solve my issue. I am curious though, is there a way to quickly convert a HDD in place to VHDX and have the VHDX consume all the available space on the drive? I have 8TB of data and migration would take several days (I only have 2tb of working space).

I will also try to update my controller firmware from p15 to the latest, p20.

Thanks again Elton!

Mike