c225298038
These fields must reflect the ROM-BIOS's geometry for CHS-based loaders to correctly load their next stage. Most loaders do not query the ROM-BIOS (Int13.08), relying on the BPB fields to hold the correct values already. Tested with lDebug booted in qemu via grub2's FreeDOS direct loading support, refer to https://bitbucket.org/ecm/ldosboot + https://bitbucket.org/ecm/ldebug (For this test, lDebug's iniload.asm must be assembled with -D_QUERY_GEOMETRY=0 to leave the BPB values provided by grub.) Signed-off-by: C. Masloch <pushbx@38.de> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This is GRUB 2, the second version of the GRand Unified Bootloader. GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more robust, more powerful, and more portable. See the file NEWS for a description of recent changes to GRUB 2. See the file INSTALL for instructions on how to build and install the GRUB 2 data and program files. Please visit the official web page of GRUB 2, for more information. The URL is <http://www.gnu.org/software/grub/grub.html>. More extensive documentation is available in the Info manual, accessible using 'info grub' after building and installing GRUB 2. There are a number of important user-visible differences from the first version of GRUB, now known as GRUB Legacy. For a summary, please see: info grub Introduction 'Changes from GRUB Legacy'