# VirtIO SCSI Driver Issues with EPYC Milan and Windows 11 VM
## Problem Summary
I'm having trouble installing the VirtIO SCSI driver on a Windows 11 VM running on an EPYC Milan processor in Proxmox. All other VirtIO drivers (networking, etc.) install successfully, but the SCSI driver consistently fails.
## System Configuration
- **Host CPU**: EPYC Milan
- **Guest OS**: Windows 11
- **Proxmox Version**: 8.1.5 & 9.0.11
- **VirtIO Driver Versions Tested**: 0.1.240, 0.1.266, 0.1.285 (only stable versions)
## VM Configuration
```
agent: 1
balloon: 0
bios: ovmf
boot: order=scsi0;ide2;ide0
cores: 16
cpu: host
efidisk0: WD8TB4_16TB:vm-132-disk-0,efitype=4m,pre-enrolled-keys=1,size=1M
hostpci0: 0000:c1:00.0,x-vga=1,pcie=1
hostpci1: 0000:c1:00.1,pcie=1
ide0: raid_backup:iso/virtio-win-0.1.266.iso,media=cdrom,size=707456K
ide2: raid_backup:iso/virtio-win-0.1.266.iso,media=cdrom,size=707456K
machine: pc-q35-8.1
memory: 32768
meta: creation-qemu=8.1.5,ctime=1710716208
name: 11Pro
net0: virtio=BC:24:11:4B:A7:CE,bridge=vmbr0,firewall=1
numa: 1
ostype: win11
scsi0: WD8TB4_16TB:vm-132-disk-1,discard=on,iothread=1,size=640G
scsihw: virtio-scsi-single
smbios1: uuid=bba983a0-50f6-4480-b19a-9944c28e8fa5
sockets: 1
tpmstate0: WD8TB4_16TB:vm-132-disk-2,size=4M,version=v2.0
usb0: host=045e:00db
usb1: host=046d:c064
usb2: host=0781:55ae
usb3: host=0e8f:0020
usb4: host=12c9:2003
usb5: host=0781:55ae
usb6: host=1532:0527
usb7: host=2357:0604
usb8: host=6-2.4.3
usb9: host=3511:2ef2
vcpus: 16
vmgenid: 1da40416-a411-423c-af4a-b7d4cea99437
```
## Error Details
When attempting to install the VirtIO SCSI driver through Device Manager using the path `\vioscsi\w11\amd64`, I receive:
> "The folder you specified doesn't contain a compatible software driver for your device. If the folder contains a driver, make sure it is designed to work with Windows for x64-based systems."
## Investigation Findings
Examining the `.inf` file in the Win11 folder shows:
```ini
[Manufacturer]
%VENDOR% = VirtioScsi,NTamd64.10.0...16299
```
The build number `16299` corresponds to Windows 10, not Windows 11 (build 22000+). This may explain why Windows 11 refuses to install the driver.
## Troubleshooting Steps Attempted
1.
Verified other VirtIO drivers install successfully (networking works)
2. Tested multiple VirtIO driver versions: 0.1.240, 0.1.266, 0.1.285
3. Confirmed VM configuration uses `virtio-scsi-single`
4.
Manual driver installation through Device Manager fails
## Questions for the Community
1. **EPYC Milan Compatibility**: Are there known compatibility issues with VirtIO SCSI drivers on EPYC Milan processors?
2. **Windows 11 Support**: Is it safe to modify the `.inf` file to include Windows 11 build numbers (22000+)?
3. **Alternative Solutions**: Should I try:
- Latest unstable VirtIO drivers?
4. **Driver Recognition**: Could the VirtIO SCSI device ID not be recognized by the driver installer on this specific CPU architecture?
## Additional Context
I'm willing to test development/unstable VirtIO drivers if someone confirms they work with EPYC Milan. The issue seems specific to the SCSI driver, as all other VirtIO components function correctly.
Has anyone successfully run Windows 11 VMs with VirtIO SCSI on EPYC Milan processors?
## Problem Summary
I'm having trouble installing the VirtIO SCSI driver on a Windows 11 VM running on an EPYC Milan processor in Proxmox. All other VirtIO drivers (networking, etc.) install successfully, but the SCSI driver consistently fails.
## System Configuration
- **Host CPU**: EPYC Milan
- **Guest OS**: Windows 11
- **Proxmox Version**: 8.1.5 & 9.0.11
- **VirtIO Driver Versions Tested**: 0.1.240, 0.1.266, 0.1.285 (only stable versions)
## VM Configuration
```
agent: 1
balloon: 0
bios: ovmf
boot: order=scsi0;ide2;ide0
cores: 16
cpu: host
efidisk0: WD8TB4_16TB:vm-132-disk-0,efitype=4m,pre-enrolled-keys=1,size=1M
hostpci0: 0000:c1:00.0,x-vga=1,pcie=1
hostpci1: 0000:c1:00.1,pcie=1
ide0: raid_backup:iso/virtio-win-0.1.266.iso,media=cdrom,size=707456K
ide2: raid_backup:iso/virtio-win-0.1.266.iso,media=cdrom,size=707456K
machine: pc-q35-8.1
memory: 32768
meta: creation-qemu=8.1.5,ctime=1710716208
name: 11Pro
net0: virtio=BC:24:11:4B:A7:CE,bridge=vmbr0,firewall=1
numa: 1
ostype: win11
scsi0: WD8TB4_16TB:vm-132-disk-1,discard=on,iothread=1,size=640G
scsihw: virtio-scsi-single
smbios1: uuid=bba983a0-50f6-4480-b19a-9944c28e8fa5
sockets: 1
tpmstate0: WD8TB4_16TB:vm-132-disk-2,size=4M,version=v2.0
usb0: host=045e:00db
usb1: host=046d:c064
usb2: host=0781:55ae
usb3: host=0e8f:0020
usb4: host=12c9:2003
usb5: host=0781:55ae
usb6: host=1532:0527
usb7: host=2357:0604
usb8: host=6-2.4.3
usb9: host=3511:2ef2
vcpus: 16
vmgenid: 1da40416-a411-423c-af4a-b7d4cea99437
```
## Error Details
When attempting to install the VirtIO SCSI driver through Device Manager using the path `\vioscsi\w11\amd64`, I receive:
> "The folder you specified doesn't contain a compatible software driver for your device. If the folder contains a driver, make sure it is designed to work with Windows for x64-based systems."
## Investigation Findings
Examining the `.inf` file in the Win11 folder shows:
```ini
[Manufacturer]
%VENDOR% = VirtioScsi,NTamd64.10.0...16299
```
The build number `16299` corresponds to Windows 10, not Windows 11 (build 22000+). This may explain why Windows 11 refuses to install the driver.
## Troubleshooting Steps Attempted
1.
Verified other VirtIO drivers install successfully (networking works)2.
Tested multiple VirtIO driver versions: 0.1.240, 0.1.266, 0.1.2853.
Confirmed VM configuration uses `virtio-scsi-single`4.
Manual driver installation through Device Manager fails## Questions for the Community
1. **EPYC Milan Compatibility**: Are there known compatibility issues with VirtIO SCSI drivers on EPYC Milan processors?
2. **Windows 11 Support**: Is it safe to modify the `.inf` file to include Windows 11 build numbers (22000+)?
3. **Alternative Solutions**: Should I try:
- Latest unstable VirtIO drivers?
4. **Driver Recognition**: Could the VirtIO SCSI device ID not be recognized by the driver installer on this specific CPU architecture?
## Additional Context
I'm willing to test development/unstable VirtIO drivers if someone confirms they work with EPYC Milan. The issue seems specific to the SCSI driver, as all other VirtIO components function correctly.
Has anyone successfully run Windows 11 VMs with VirtIO SCSI on EPYC Milan processors?