HP HP Pavilion Desktop PC 570-pOXX.
Windows 10 Home (X64) Version 1703
This is a new computer and the first I've had with UEFI. Until today I could not boot to usb or dvd. After considerable research I found my way into UEFI setup and disabled fast boot and boot security, and changed the boot order to usb/dvd/hd. No satisfaction. Desperate, I found HP Support and the agent suggested I make a usb repair drive using MS RecoveryDrive.exe. It took an hour to complete but to my suprise it booted! (Not directly, there was a menu offering the usb or the hard drive.)
My question is, what did MS do to make this disk boot that no other burning process did? (I have an unbootable Macrium Recovery disk and Win 10 ISO disk burned with BurnAware.
Also same problem with dvd. I assume that whatever applies to usb also works for dvd.