Hi Thomas, On 01 Mar 2019, at 09:31, Thomas Schmitt <[email protected]> wrote:
> Hi, > > by mistake i sent the following to scsijon in private: > ------------------------------------------------------------------------- > > scsijon wrote: >> Is isohybrid worth adding to T2, I admit I think so? > > http://t2sde.org/packages/syslinux > > lists both variations of the isohybrid program as "Installed files": > usr/bin/isohybrid > usr/bin/isohybrid.pl > > Only the former is capable of adding an EFI System Partition image. > The .pl script is older and cares only for the BIOS MBR code and a > simple partition table. > > > It has to be stressed that the T2 installation ISOs are not suitable > for the SYSLINUX isohybrid programs, because those ISOs have a GRUB > EL Torito boot image for BIOS booting. The isohybrid MBR would not > work with that boot image, but does officially only with the SYSLINUX > ISOLINUX image of the same SYSLINUX version as the isohybrid program. > (In practice the versions stayed compatible since years.) > > With the recent ISOs like t2-minimal-musl-x86-64-r47636.iso, it is > not necessary to postprocess them in order to make them bootable from > USB stick. They have a GRUB MBR for BIOS. > It will be necessary to set the firmware to BIOS legacy mode, because > there is no EFI System Partition currently. Thanks for contributing your thoughts. Next on my TODO is adding script glue / config to create UEFI isos, for more smooth booting on new systems as well as probably easier just copy’n paste usb thumb drive creation. In general I do not like messing with and duplicating packages, but given the i386 vintage legacy I might add an option (maybe even defaulting to yes) to build grub2 twice, once for vintage BIOS, and once for UEFI to allow creating such hybrid ISOs just for the sake of greatest backward compatibility. René -- ExactCODE GmbH, Lietzenburger Str. 42, DE-10789 Berlin http://exactcode.com | http://exactscan.com | http://ocrkit.com | http://t2-project.org | http://rene.rebe.de
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