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NBRT not working with UEFI
NBRT via USB boot does not work with UEFI systems...why have you not updated your rescue disc? I use multiple, other USB boot drives and they work, including Win10 and Acronis.
I do not have Legacy BIOS enabled as this conflicts with running of the system (I believe it was an issue with GPT disks or TPM). I'm not enabling legacy, nor should you expect your customers to.