When you enter BIOS Setup, the setup utility page will appear.(Depending on the company that created your version of BIOS, a menu may appear.) During the initial startup screen, press ESC, F1, F2, F8, or F10.Press the Power button on your computer.Start by plugging the thumb drive into a USB port.

Otherwise, the computer will load from the hard drive as standard. If you're booting from USB media, you must change the BIOS boot order so the USB device is listed first. The boot order tells the machine which devices to search for the software needed to launch the computer and the priority of each device in that search. That's because the BIOS settings include the machine's boot sequence when starting up. The second attempt to reboot the system however went straight into Windows.Starting your PC using USB rescue media is not difficult, although it first requires an adjustment in the BIOS (Basic Input Output System). When the machine first booted after inserting the existing RAID, it went thru lengthy attempts of CD/DVD and NIC boots before booting into the RAID (win2008 R2). They can be seen residing on the last item of the boot order Embedded RAID: Smart Array. The OS of the existing RAID drives were successfully detected.are those multiple instances of Windows Boot Manager the previous OSs that were running on this server? NOTE, at that moment I had not booted from the newly inserted RAID drives even once yet. I saw many instances of Windows Boot Manager. When I was configuring UEFI boot Order shown in the picture below,.I was transferring a set of existing raid drives into a second-hand server, an HP Gen9 server.

Uefi windows boot manager