First, when I tried to boot to the drive/Win11, It gave me errors for the computer not being UEFI bios. Yande圆3 said:I tried this on a 128gb PNY drive, and have some questions. That being said, can anyone direct me to a true 'step by step' guide on how to convert an existing Win10 installation to UEFI/GPT WITHOUT LOOSING DATA? which in turn usually takes me down a rabbit hole of fixes that lasts for hours or days.

I've read a number of articles on how to convert to UEFI/GPT, but they all focus on converting the drives, and experience has taught me that those types of 'how tos' always seem to leave out one or two critical steps. Advice is welcome!Īlso, I've not upgraded any of my machines to Win11 yet, because all of them are MBR/Legacy. Does that mean that any machine I try to run the Win11 portable version on must have the same specs required for installing it on a computer? I had assumed (possibly wrongly) that because in Rufus/Image Option, it had the following 'Extended Windows 11 Installation (no TPM, no Secure Boot/8GB Ram)? I'm going to wipe the USB drive and try again to see if I missed something.

I tried this on a 128gb PNY drive, and have some questions.

Usb bootable