EFI support in the kernel

[Volker Wysk]

Am Sonntag, den 26.01.2020, 09:28 -0500 schrieb Rashkae:
> On 2020-01-26 7:58 a.m., Ken D'Ambrosio wrote:
> > your system booting UEFI, you have to have your BIOS thusly
> > configured,
> > AND do a UEFI-based install at installation time.  (The install
> > used to
> > require you to select UEFI from the GRUB menu at install time; I
> > think
> > Ubuntu may have enough smarts now to simply pick the default.)  But
> > I
> > don't see anything approaching an even vaguely easy way to do this
> > retroactively: you need to change your disk layout (need an EFI
> > partition), need to populate it, change your BIOS from "legacy" to
> > "(U)EFI", etc.  I do not see there being anything but pain and
> > suffering
> > trying to make this happen post-facto.
> 
> The Boot Repair CD has a utility that will step your through the
> process
> of changing Boot from BIOS to grub post install.  It's not entirely
> automatic, but it's not horribly painful either.  

I'm not putting my old SSD in the new computer, as the new main system.
Rather, I need to set up a new system, since I have a larger new SSD.
I've copied the contents (the files) of the old SSD to the new one, and
need to make the new one bootable.

Using the Boot Repair tool would mean to copy the entire old SSD
(image-wise) to the new SSD and then grow it to fill the new SSD,
before doing Boot Repair. 

I can't imagine that that Boot Repair tool can completely set up a new
boot configuration, like it would be needed in my case. That's not
repairing.

> You still need to
> create an EFI Boot partition. (100 to 200MB, Fat32).
                                 ^^^^^^^^^^^^^^^^^^^
And don't forget: the "code" must be EF00.


> If your hard boot drive is using MBR parition table instead of GPT.
> you
> can use gdisk to convert it.  

Yes, I know.

> Note that you should have good backups
> before trying this.

That's right.

> 
> 
> Boot Repair CD: https://sourceforge.net/projects/boot-repair-cd/
> 
> 
> 

Cheers
Volker