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******************************************************************************
*** grldr.mbr - Details about the control bytes ***
******************************************************************************
Six bytes can be used to control the boot process of GRLDR.MBR.
Offset Length Description
====== ====== ==============================================================
02h 1 bit0=1: disable the search for GRLDR on floppy
bit0=0: enable the search for GRLDR on floppy
bit1=1: disable the boot of PREVIOUS MBR with invalid
partition table(usually an OS boot sector)
bit1=0: enable the boot of PREVIOUS MBR with invalid
partition table(usually an OS boot sector)
bit2=1: disable the feature of unconditional entrance to
the command-line(See below `--duce')
bit2=0: enable the feature of unconditional entrance to
the command-line(See below `--duce')
bit3=1: disable geometry tune(See below `--chs-no-tune')
bit3=0: enable geometry tune(See below `--chs-no-tune')
bit4 - bit6: reserved
bit7=1: try to boot PREVIOUS MBR after the search for GRLDR
bit7=0: try to boot PREVIOUS MBR before the search for GRLDR |
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