The "Device Not Registered" error in LPRO AIO Ramdisk occurs when your device's unique identifier ( ) has not been added to the developer's authorized database
Context and likely interpretation
For GRUB, edit /etc/default/grub and add to GRUB_CMDLINE_LINUX_DEFAULT, then run sudo update-grub. lpro aio ramdisk device not registered better
The core problem: The Lpro scheduler is looking for a hardware callback (an interrupt handler or DMA register). A standard ramdisk does not provide this. Hence: "device not registered better." The "better" suffix often appears in debug logs, implying the system attempted a fallback registration but failed to find an optimal path. The "Device Not Registered" error in LPRO AIO