[syslinux] Getting classic BIOS and UEFI boot on the same disk?
Erik Rull
erik.rull at rdsoftware.de
Fri Aug 30 10:15:16 PDT 2019
Hello Greg,
thanks a lot - I will try out your script next week.
I jut went through the script - there is a line containing:
bls1 include
I would carefully assume that this line is only valid when patching syslinux,
correct? What will happen if this is read by a non-patched syslinux? Will it
cause errors or will it simply be ignored?
Best regards,
Erik
Gregory Bartholomew wrote:
> I just created something very similar for one of my own projects. I have a disk
> image that you can "dd" onto a hard drive or USB drive and a bash script
> demonstrating how it was done here:
>
> https://www.syslinux.org/archives/2019-July/026476.html
>
> You don't actually need the patch for the dual BIOS/UEFI support. The patch in
> the above link is just to enable the reading of config "snippits" from a
> "entries" directory. Feel free to try out the provided disk image to see if it
> meets your needs and reverse-engineer the bash script to suit your needs.
>
>
> On Wed, Aug 21, 2019 at 1:34 PM William R. Somsky via Syslinux
> <syslinux at syslinux.org <mailto:syslinux at syslinux.org>> wrote:
>
>
> I'm not sure if it is useful, but with the advent of UEFI only machines,
> we've run into a similar problem w/ out custom CentOS 7 USB installation
> keys.
>
> Basically, we create a gpt device w/ a single FAT16 partition (this
> would be your /boot partition for a full installation) containing an
> EFI/BOOT/ directory with the syslinux-efi files and a SYSLINUX/
> directory with the syslinux-bios files.
>
> Would further info on this be helpful?
>
> - WRSomsky
>
>
> On Wed, Aug 21, 2019 at 12:57:05PM +0200, Erik Rull via Syslinux wrote:
> > Hi all,
> >
> > We're using the classic boot BIOS syslinux successfully for many years, but
> > meanwhile it's getting harder to buy hardware the still supports this boot
> > mode.
> > The option for us would be syslinux EFI boot.
> > To avoid too many changes we would like to generate an image for our different
> > hardware parts that supports both - classic BIOS boot and (U)EFI boot.
> > This would allow us to leave the BIOS in whatever state it is and the system
> > will simply boot.
> >
> > [[...]]
>
> --
> Dr. William R. Somsky somsky at uw.edu
> <mailto:somsky at uw.edu>
> Department of Physics, Box 351560 B217 Phys-Astro Bldg
> Univ. of Washington, Seattle WA 98195-1560 206-616-2954
> _______________________________________________
> Syslinux mailing list
> Submissions to Syslinux at syslinux.org <mailto:Syslinux at syslinux.org>
> Unsubscribe or set options at:
> https://lists.syslinux.org/syslinux
>
More information about the Syslinux
mailing list