Hi Toni Carrera,
I understand that you are experiencing boot errors when attempting to start a Hyper-V virtual machine with a Western Digital MyCloud 6TB drive attached as a SCSI physical drive. This issue seems to occur only when the drive is connected, as the VM boots perfectly without it.
First, it's important to confirm that the VM's SCSI controller is capable of properly handling the attached drive. Sometimes, certain SCSI controllers may have limitations or compatibility issues with specific devices. You can check the settings of the SCSI controller and ensure that it supports the size and specifications of the Western Digital MyCloud drive.
Additionally, it might be worth checking the configuration of the virtual machine checkpoints. Checkpoints, also known as snapshots, can sometimes cause conflicts and errors during the boot process. You mentioned that you have tried changing the checkpoint options, but the errors persist. Can you provide more details about the specific checkpoint configurations you have attempted?
In some cases, it may be necessary to delete or merge existing checkpoints in order to resolve boot issues. Make sure to create a backup or export of the VM before proceeding with any checkpoint-related changes to avoid data loss.
If the above steps do not resolve the issue, it may be helpful to provide more information about the specific error messages you are encountering. Detailed error messages can often provide clues to the underlying problem and help with troubleshooting.
Please provide more information about the error messages you receive when attempting to start the virtual machine with the Western Digital MyCloud drive attached. This information will assist us in further diagnosing and resolving the issue.