Boot Device Priority Question

comcom · 16 Nov 2023

a) If the 1st Boot Device is Samsung SSD, and 2nd Boot Device is CDROM or Removable Dev, in what scenario does the PC move on to the 2nd Boot Device?

b) If the 1st Boot Device is Samsung SSD, and 2nd Boot Device is CDROM or Removable Dev, if during power on my PC stuck at the windows logo, or stuck before windows logo appear, does the PC auto move on to boot the 2nd Boot Device? I wonder how long does it wait during a stuck screen happens then auto move on to boot the 2nd Boot Device, sometimes stuck screen can happen for a long time then auto continue to load successfully.

c) If Boot Device is CDROM or Removable Dev, does it auto boot whatever is inside CDROM or Removable Dev or does it have need a user input e.g. select something in a menu and press enter etc.?

d) If Boot Device is CDROM or Removable Dev, if the CDROM or Removable Dev contains malware would the malware be auto loaded?

Thanks

Megahertz · 16 Nov 2023

P7P55D-E PRO Manual

On page 3-31
To select the boot device during system startup press <F8> when ASUS logo appers

spunk · 17 Nov 2023

To answer your questions
a] If the Samsung SSD is unplugged or it has failed to boot because of hardware failure, the Bios would move onto the next bootable device.
b] If you see the Windows logo, the Bios has recognized the Samsung SSD and is trying to boot from Windows from the SSD. It will not move on to another bootable device, because the SSD is recognized. If it is stuck on the Windows Logo, then the Boot files are corrupt and it cannot boot into Windows. The Drive may need to be replaced and/or Windows needs to be repaired or reinstalled.
c] If CD rom or Removable device has Boot files on the media (Flash Drive, CD/DVD disc) it will boot from that media. In older motherboards like yours, it will give you a message Press Any Key to boot from (media) Newer motherboards no longer give you this message.
d) the boot media rarely contains malware. Once you boot from the media, you have to click something, like the Windows installer or Rescue Media, on rare occasions, this could infect the computer with malware. But since you are creating the bootable media from a known good ISO image, it would be exceptionally rare.

PiKo · 18 Nov 2023

Maybe a good moment to get familiar with Macrium Reflect. There you create a bootable device either CD Rom or USB stick. And you may check whether booting from such device works.