On Monday, 12 October 2020 17:43:04 BST Michael wrote:

> The UEFI firmware contains a number of variables in key/value pairs, stored
> on NVRAM.  One of these is a table containing a Boot Menu within an
> editable area of the firmware, which can be manipulated with the EFI shell
> (efibootmgr) to set, rename, delete bootable .efi images.

[...etc]

Thanks Michael; more-or-less what I thought.

-- 
Regards,
Peter.




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