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Boot failed EFI SCSI device Hyper-v – How we fix it!

Are you stuck with boot failed EFI SCSI device error in Hyper-V? We can help you fix it.

The common reason for the error is because of the Boot Architecture in Hyper-V

At Bobcares, we often receive requests to fix Hyper V errors as part of Server Management Services.

Today, let’s see how our Support Engineers resolve boot failed EFI SCSI device error.

 

Cause for boot failed EFI SCSI device in Hyper-V

One of the major causes of the error is that servers are not created using the correct generation.

Microsoft introduced two Hyper-V Boot Architectures setup. One for BIOS and another for UEFI. Generation 1 supports BIOS whereas Generation 2 supports UEFI.

So when creating a server with an older OS version we need to create it in Generation 1 since it is for BIOS-based.

The sample error looks like:

boot failed efi scsi device hyper-v

Let’s discuss how our Support Engineers create Generation 1 servers. Also, let’s discuss alternative methods to resolve the error.

 

How we fix boot failed EFI SCSI device in Hyper-V

Recently one of our customers approached us saying that they were unable to boot the server and were getting this error. Let’s see how our Support Engineers fix it for our customer.

 

Create a Generation 1 Hyper-V

Now let’s see how our Support Engineers create Generation 1 servers in Hyper-V

1. Open Hyper-V Manager. Click on Hyper-V host and click on Virtual Machine.

2. Now a new window appears and then click Next. Select a location to store the Virtual Machine data.

3. In the Specify Generation, our Engineers select Generation 1 and click Next.

4. In Assign Memory we specify the memory. Now, in Configure Networking we select the Virtual Switch.

5. Then in Connect Virtual Hard disk, we select the required option and click Next.

6. Now the summary displays. We verify the details and finally, we click Finish.

 

Disable Secure boot

Another workaround to resolve the error without changing the Generation is to disable secure boot. Let’s discuss how our Support Engineers disable secure boot for a VM.

Initially, we open Hyper-V Manager. We select the virtual machine. Right-click on the VM and click on the setting.

Then we click on the Security tab. Uncheck Enable Secure Boot.

Thus it resolved the error when loading the Virtual Machine.

 

Booting from a DVD drive

Another reason for the error to occur is when trying to load from the DVD drive. Let’s discuss how our Support Engineers change the boot order to resolve the error.

So when ISO is mounted as a DVD drive we need to change the boot order at the startup.

To change it we right-click on the VM and select properties. We select the Firmware tab.

Then we move the DVD Drive to the top of the list. Thus starting the VM the OS loaded without any issue.

 

[Need assistance to fix Hyper-V error? – We can help you fix it]

 

Conclusion

In short, we have discussed the causes of the error boot failed EFI SCSI device. Also, we have discussed how our Support Engineers resolves the error for our customers.


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