Gen2 Hyper-V not booting from ISO

[Curious Pineapple]

I have a bit of an issue. Trying to create a Gen2 VM, and all I get is SCSI error, failed to boot.

 

Google revealed a solution that doesn't work. I don't get the press any key to boot from CD/DVD message that everyone else seems to get, I just get a refusal to load anything from an ISO.

 

The ISO's are working images, I have Win 8.1 installing in a gen1 VM now, but I seem to have rather crappy performance using the Gen1 machines. I'll be compiling code in the VM, so performance is rather important (working on a client/server application with lots of encryption, want to work on both together as the code is pretty much the same).

 

Any help would be greatly appreciated

[samiscool51]

hyperv is not the best VM software out there and is a pain to work with

try passing a storage device to it with a windows installer and see if it boots and can see the drive

if so then try it with the software you are trying to install, it should do the same thing

[UberBruce]

Try checking in settings under firmware  there is a boot order on the right side you might need to change it so that your DVD drive (ISO) is at the top of the list.

[Jarsky]

Gen 2 has secure boot enabled by default, because its made for UEFI installs.

Make sure your DVD drive (which has the ISO mounted) is set as Primary as @UberBruce pointed out.

If it still doesn't work, try turning off Secure Boot on the Guest machine then try booting.

If it still fails, you might need to convert the image into a UEFI bootable, to run it as a Gen2

[Curious Pineapple]

I've set the DVD to first position in boot list, also set the SCSI device for the DVD to position 0. Secure boot is disabled and the ISO is Win 8.1, although not one from Microsoft.

 

I'm using Hyper-v as I'm doing some mobile development, and the Windows phone emu's use it. I've got it installed as a Gen1 machine now, bit slow but it should be OK.

[Blake]

On 9/14/2016 at 4:27 AM, Curious Pineapple said:

I have a bit of an issue. Trying to create a Gen2 VM, and all I get is SCSI error, failed to boot.

 

Google revealed a solution that doesn't work. I don't get the press any key to boot from CD/DVD message that everyone else seems to get, I just get a refusal to load anything from an ISO.

 

The ISO's are working images, I have Win 8.1 installing in a gen1 VM now, but I seem to have rather crappy performance using the Gen1 machines. I'll be compiling code in the VM, so performance is rather important (working on a client/server application with lots of encryption, want to work on both together as the code is pretty much the same).

 

Any help would be greatly appreciated

fyi, no real performance difference between gen 1 and gen 2. Heck unless things have changed recently you can't load a gen 2 into azure. If you need more performance go increase the number of CPU cores your are giving it. Work on the ratio of 4 virtual cores to 1 physical core (but this is total, so if you have 2VMs on a due core give each 4cores).

[Curious Pineapple]

16 hours ago, Blake said:

fyi, no real performance difference between gen 1 and gen 2. Heck unless things have changed recently you can't load a gen 2 into azure. If you need more performance go increase the number of CPU cores your are giving it. Work on the ratio of 4 virtual cores to 1 physical core (but this is total, so if you have 2VMs on a due core give each 4cores).

There's no way to add more virtual cores than physical that I have found. I have a hexacore CPU, and give the VM's 5 or 6. The performance is awful though, I used to get better performance using VirtualBox on a Core 2 duo!