Virtual Machines

How-to guides for creating, importing, configuring, and managing virtual machines.

• Changing Resolution on a UEFI VM — Steps to change the screen resolution on a UEFI-based VM by modifying the OVMF Platform Configuration display settings.
• Emulate a USB Device — Instructions for creating and attaching an emulated USB device to a VM in VergeOS, including hotplug configuration and VirtIO driver…
• How to Add a TPM Device to a Virtual Machine — Step-by-step instructions for adding a Trusted Platform Module (TPM) device to a virtual machine in VergeOS, including UEFI configuration…
• How to Import a Linux VM (RHEL, CentOS, SUSE, Debian, Ubuntu) — Importing Linux VMs from other hypervisors into VergeOS and configuring virtio drivers by rebuilding initramfs for proper booting across…
• Importing Physical Machines and Individual VMs into VergeOS — Learn how to use the VergeOS Clone Utility to import physical or virtual machines into VergeOS, including PtoV and VtoV migrations with…
• Importing VMs from Files — Learn how to import VMs into VergeOS from uploaded files including VMX, VMDK, OVF, VHD/X, and QCOW2 formats, with troubleshooting steps for…
• Importing Windows Server with UEFI into VergeOS — Guide to migrating a UEFI-enabled Windows Server VM from VMware into VergeOS, including disk interface changes, Virtio driver installation…
• Isolating a VM — Methods for isolating a virtual machine in VergeOS, including removing network connections and creating a dedicated internal network for…
• Loading Virtio Drivers in Windows Recovery Console — How to load Virtio SCSI and storage drivers in Windows Recovery Console so that Virtio-SCSI disks become visible for recovery operations.
• Making a Non-Persistent VM — How to create a non-persistent virtual machine in VergeOS that reverts to its original state after each reboot, ideal for VDI environments.
• Managing Files — How to upload, manage, and share files in VergeOS including ISOs, VM disk images, and creating public links for file sharing between sites…
• Reasons a Windows VM Restarted Unexpectedly — How to diagnose why a Windows VM restarted unexpectedly by reviewing VergeOS log messages including kill, poweroff, shutdown, and reset…
• Resizing a Virtual Disk Drive — Step-by-step instructions for increasing the size of a virtual disk drive in VergeOS, including notes on hot-plug support and guest OS…
• Secure Boot Certificate Expiry - Microsoft Guest VMs (June 2026) — How to resolve the expiring Microsoft Secure Boot certificate on Windows guest VMs using the one-click fix introduced in VergeOS 26.1.5.
• UEFI Tweaks for Imported VMs — How to resolve boot issues with imported VMs that use UEFI boot devices, including boot order and secure boot adjustments.
• Understanding VergeOS VM Memory Management — Explains why VergeOS shows allocated memory rather than active usage, the benefits of no memory ballooning, and best practices for memory…
• VirtIO-Win Driver Compatibility with MS SQL Server Workloads — Known virtio-win driver compatibility issue affecting Windows VMs running MS SQL Server under heavy I/O, including the recommended version…
• Virtual Drive TRIM — How to perform TRIM/UNMAP operations on virtual drives in Windows and Linux to reclaim unused vSAN space, especially after importing…
• VM Advanced Options — Guide to configuring advanced VM options for fine-tuning performance, hardware emulation, and device behavior in VergeOS, including CPU…
• VM Disk Discard — Managing disk discard settings for virtual machines in VergeOS to optimize storage usage and reclaim unused vSAN space through TRIM/DISCARD…
• Windows - Slow to Format a New Disk — How to fix slow virtual disk formatting in Windows Server 2012 and later by temporarily disabling SCSI TRIM and Unmap commands using fsutil.
• Windows - Time Shift — How to resolve time drift in Windows VMs on VergeOS by configuring the RTC Base setting and the RealTimeIsUniversal registry key for proper…
• Windows Disks Showing Offline After Restarting — How to fix secondary virtual disks that show as offline after restarting a Windows VM imported into VergeOS, using the Set-StorageSetting…
• Windows is Unable to Detect a Virtual Disk Drive — How to resolve Windows not detecting a virtual disk drive by loading virtIO drivers during installation or changing the disk interface type…
• Windows Restored VM Not Bootable — Troubleshooting steps for a Windows VM that is not booting after being restored from a snapshot, including fixes for non-quiesced…
• Workloads Failing to Migrate — Common reasons why workloads fail to migrate between nodes, including insufficient resources, pinned VM configurations, and tenant node…