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DRMK (Dell Real Mode Kernel), now used in their DOS-based diagnostic images (probably about 2-4 years), has a rather unusual entry into the IO file (DELLBIO.BIN; similar to IO.SYS and IBMBIO.COM). After fumbling around with it over the last few days, I _think_ I've figured out the quirks of this entry point (and successfully tweaked chain.c32 to do such). dl Usual; drive number bp 0 cs

...test/dlgdiag4.imz label RL kernel /isolinux/linresc/rescue.lnx append vga=0x301 initrd=/isolinux/linresc/initrd.gz root=/dev/ram0 init=/etc/rc/init label dellst kernel memdisk append initrd=/isolinux/DELL/asset.imz label DELLST kernel memdisk append initrd=/isolinux/DELL/asset.imz label dellbios kernel memdisk append initrd=/isolinux/dellbios.bin label DELLBIOS kernel memdisk append initrd=/isolinux/dellbios.bin label DELL kernel memdisk append initrd=/isolinux/dell.img label dell kernel memdisk append initrd=/isolinux/dell.img label ehss kernel memdisk append initrd=/i...

git://gnx.ath.cx/syslinux.git On branch for_hpa, I've got an extension of com32/modules/chain.c that introduces a new option, drmk=, for loading the Dell Real Mode Kernel file DELLBIO.BIN in a total of 5 commits. Again, thank you Gert Hulselmans. -- -Gene

git://gnx.ath.cx/syslinux.git On branch for_hpa, I've got several groups of changes (listed bottom up) -chain.c32: the beginning of a DRMK loader; I still need to test this further and document/code what ones can possibly work -mtools/syslinux.c: Check to be sure fs is not NULL in case libfat_open() failed, like it can on a bad filesystem. Try to present a useful error rather than a seg

Here is a patch that makes it possible to chainload GRUB2 core.img form chain.c32. It reuses the grub= parameter (used for chainloading GRUB Legacy stage2): - both loaded at 0x8000 - start execution at offset 0x200 (0x8200 in memory) GRUB2 allows to specify another "GRUB home dir" than the standard /boot/grub GRUB2 doesn't allow to change the configfile 'grub.cfg' name

This is a bit updated set of chain.c32 changes that simplifies a few things (and in partiter part), fixes few minor issues and adds a few new features. Details are in the following commits, below is the summary and pull details at the end. Shao - any chance to peek over them ? Most of those are relatively simple changes and well tested, though of course something might have slipped my attention.