If you see your drive but still get a "Boot Device Not Found" error, Secure Boot may be blocking it.
| Icon/Text | Meaning | Should it be #1? | | :--- | :--- | :--- | | | UEFI partition pointing to your OS drive. | Yes (for Windows 10/11). | | USB Flash Drive / UEFI: USB | External USB installer. | Yes (temporarily for OS installation). | | SATA HDD / SSD (e.g., ST2000DM008) | Legacy hard drive or SSD. | Yes (if you use Legacy boot, not UEFI). | | UEFI: DVD/CD-ROM | Optical drive. | No (unless booting from disc). | | Network Boot (PXE) | Attempts to boot over LAN. | No (unless in enterprise environment). | | Disabled | A slot with no drive detected. | Ignore. |
If you moved a USB drive to the first position, and the USB contains a bootable operating system installer (like Windows 10 or Linux), the computer should now boot from that USB stick.
Are you trying to boot from a , like a Windows installation USB?
| Symptom | Likely Fix | | :--- | :--- | | Boot Priority list is empty | No drive detected. Check SATA/NVMe connections. | | PC goes straight to BIOS every time | No bootable drive found. Reinstall Windows or replace drive. | | USB drive not in boot list | Try a different USB port (preferably a rear USB 2.0 port). Re-create the installer using Rufus or Media Creation Tool. | | Changed priority but PC ignores it | Disable "Fast Boot" in BIOS. Fast boot sometimes skips USB initialization. |
Adjusting boot priority in is the quickest way to choose which drive your computer starts from—whether it’s your main SSD or a temporary USB installer. How to Access EZ Mode Restart your computer.
Asus Bios Utility Ez Mode Boot Priority
If you see your drive but still get a "Boot Device Not Found" error, Secure Boot may be blocking it.
| Icon/Text | Meaning | Should it be #1? | | :--- | :--- | :--- | | | UEFI partition pointing to your OS drive. | Yes (for Windows 10/11). | | USB Flash Drive / UEFI: USB | External USB installer. | Yes (temporarily for OS installation). | | SATA HDD / SSD (e.g., ST2000DM008) | Legacy hard drive or SSD. | Yes (if you use Legacy boot, not UEFI). | | UEFI: DVD/CD-ROM | Optical drive. | No (unless booting from disc). | | Network Boot (PXE) | Attempts to boot over LAN. | No (unless in enterprise environment). | | Disabled | A slot with no drive detected. | Ignore. | asus bios utility ez mode boot priority
If you moved a USB drive to the first position, and the USB contains a bootable operating system installer (like Windows 10 or Linux), the computer should now boot from that USB stick. If you see your drive but still get
Are you trying to boot from a , like a Windows installation USB? | Yes (for Windows 10/11)
| Symptom | Likely Fix | | :--- | :--- | | Boot Priority list is empty | No drive detected. Check SATA/NVMe connections. | | PC goes straight to BIOS every time | No bootable drive found. Reinstall Windows or replace drive. | | USB drive not in boot list | Try a different USB port (preferably a rear USB 2.0 port). Re-create the installer using Rufus or Media Creation Tool. | | Changed priority but PC ignores it | Disable "Fast Boot" in BIOS. Fast boot sometimes skips USB initialization. |
Adjusting boot priority in is the quickest way to choose which drive your computer starts from—whether it’s your main SSD or a temporary USB installer. How to Access EZ Mode Restart your computer.