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Re: Boot Order Change

On Thu, 22 Feb 2018 16:41:42 -0500
Felix Miata <mrmazda@earthlink.net> wrote:

> Dan Norton composed on 2018-02-22 16:05 (UTC-0500):
> > Installs of both stretch and buster modify the boot order such that
> > "debian" is first under "UEFI Boot Sources". After installation, the
> > bios menu has to be edited in order to boot from DVD or CD or USB
> > drive. Also "Hard Drive" has been replaced with "debian".  
> > The PC is:
> > Hewlett-Packard HP Pro 3400 Series MT/2ABF, BIOS 7.16 03/23/2012  
> > Apparently it is deliberate, so what is the reason for this?  
> AFAICT, it depends on the particular BIOS design and settings
> therein, how it's designed to react to what it finds in the EFI
> partition, particularly if there is more than one entry there. Brand
> name PCs tend to offer fewer BIOS options.

In case someone finds this thread in the archives; finally the reason
got through to me over on debian-boot[1]. Unlike the primary/logical
scheme with an mbr, where an installer can just write a new mbr, in the
UEFI scheme the grub code is *added* to the EFI system partition with
nothing pointing to it until the UEFI menu is changed.


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