Are you sure the drive was completely unpartitioned? Disk Utility won't show you the EFI System Partition, which is what's used for firmware updates.

2] Delete Recovery Partition and EFI System Partition Sometimes, when you install Windows 11/10 on a new hard drive or upgrade to Windows 11/10, some partitions from the previous Windows version ...

The EFI system partition contains critical boot files and must remain hidden for system stability. Backup tools like Acronis sometimes temporarily assign it a drive letter during operations ...

It seems difficult using the built-in system tools on either Windows 10 or Ubuntu to initialize a disk as GPT with an EFI system partition.

The bootkit, dubbed ESPecter by ESET researchers who found it, achieves persistence on the EFI System Partition (ESP) of compromised devices by loading its own unsigned driver to bypass Windows ...

Running an Intel machine, you can't install a system onto an Apple partition scheme disk, but if you start with a disk on which an Intel-appropriate system somehow has been installed, even if it ...

Intel Security has released a tool that allows users to check if their computer's low-level system firmware has been modified and contains unauthorized code.

Intel Security, soon to be rebranded as McAfee again, released on Wednesday a scanner that can identify hidden EFI firmware rootkits.