When trying to install Windows on an Asus ROG Flow Z series laptop (and possibly similar ASUS models), you may run into an issue: the main internal SSD is missing from the “Where do you want to install Windows?” screen.
The good news? There’s a simple fix. It just requires adjusting a BIOS setting. If you’ve never used BIOS before, it can feel a little intimidating and you cause major problems with a simple mistake; so follow these steps carefully, and if you’re unsure, ask someone tech-savvy to help or leave a comment.
1. Enter BIOS
- Completely power off your laptop.
- Press the Power button, and as soon as the ASUS logo appears, repeatedly tap
F2until the BIOS menu opens.- If
F2doesn’t work, tryDelinstead (but on Flow Z,F2is standard).
- If
2. Switch to Advanced Mode
- By default, ASUS BIOS starts in EZ Mode.
- Press F7 to enter Advanced Mode.

3. Navigate to VMD Settings
- Use the arrow keys or trackpad to go to the Advanced tab.
- Look for VMD Setup Menu (sometimes called Intel Volume Management Device).
- On Flow Z, it’s usually under:
Advanced > VMD setup menu
- On Flow Z, it’s usually under:
- Select it and press Enter.

4. Disable VMD Controller
- Inside the VMD menu, you should see options like: Enable VMD Controller → [Enabled/Disabled] or a drop down menu
- Change it to Disabled.

5. Save & Exit
- Press F10 (Save & Exit).
- Confirm when prompted.
- The laptop will reboot.
6. Boot Windows Installer
- Insert your Windows 11 USB installer (if it isn’t already).
- Boot from it (tap
Escat startup to open the boot menu and select your USB).- on some models you may need to tap F12 repeatedly instead
- When you get to the “Where do you want to install Windows?” screen, your internal SSD should now appear without needing extra drivers.
⚠️ Important Notes
This setting affects all NVMe drives managed by VMD, not just the boot SSD.
If your current Windows install was set up with VMD enabled, it might not boot after you disable VMD.
That’s fine if you’re doing a clean install.
If you want to preserve the current install, use the Load Driver method instead.

