I've been trying to update my Windows 10 Pro from the 32-bit to the 64-bit version. I'd failed during the past attempts as in the boot priority list in the BIOS of the desktop, the required bootable USB flash drive option doesn't exist. Recently, I've found out that this is likely due to the fact that the computer and the BIOS itself are quite old (more than 12 years old)
I've found an alternative way to overcome that issue, which is making use of Plop Boot Manager. I've burnt the required ISO file to an empty CD and tried to boot via it while the USB stick was connected to the computer. However, when I select the USB option in the table of the Plop's interface, the whole system freezes. I've unplugged every irrelevant USB connections, but the result was the same.
What is the cause of this problem?
31 Answer
After some efforts, I've come across a useful documentation inside the CD to which the relevant Plop ISO file has been burnt: A file which is named as readme.txt.
In this file, a user who is suffering the same problem can use specific key combinations to sort out that issue. These key commands can be found at the end of The Boot Manager section in the text file. In my case, in which I come across the freeze problem of the whole system whilst the software tries to sort all of the USB peripherals, the combination of Alt + U can be used so that in the interface of the boot manager and by pressing these keys, one can manually select the relevant USB storage device.
PS This answer is based on the Plop's plpbt-5.0.15 version.
