Cause: Your USB doesn't have the storage driver for your NVMe or RAID array.
Solution: Rebuild the USB. During the build process, click "Device Drivers" > "Add Driver" > Point to the folder containing your motherboard's INF or .SYS files (Download these from your manufacturer's website first).
The environment is stateless—changes made during a session are lost on reboot. macrium reflect bootable usb iso download portable
The ISO you create is not portable — it’s a bootable recovery environment tied to your Reflect version, but it can be used on any PC to restore images. Cause: Your USB doesn't have the storage driver