X-Git-Url: https://git.grml.org/?p=grml-live.git;a=blobdiff_plain;f=templates%2Fboot%2Faddons%2Fbsd4grml%2Fldbsd.txt;h=e8db95b9869d6f366738d0ee6070e987eafb6d9f;hp=d3f263a925a32dc2b3add01798cb083e1cd08552;hb=3e05e8e15e7c716259a800fd065ce3819eb19fdf;hpb=ee18ec4c4f3378e13b07bc97eff0970df8be4f90 diff --git a/templates/boot/addons/bsd4grml/ldbsd.txt b/templates/boot/addons/bsd4grml/ldbsd.txt index d3f263a..e8db95b 100644 --- a/templates/boot/addons/bsd4grml/ldbsd.txt +++ b/templates/boot/addons/bsd4grml/ldbsd.txt @@ -31,7 +31,11 @@ DESCRIPTION Basic operation procedure is as follows: - 1. Be loaded. + 1. Be loaded. However this is done, as the first thing we write a RETF + instruction to 0000:0000 and CALL FAR it (from 16-bit code), or + write a RET instruction to 0x00000000 and CALL it (from 32-bit + code), backing up the previous content of course, so that qemu+gdb + users can intercept via "b *0". BIOS We are loaded to 0x07C00. The drive used to load us from is passed in the DL register. The ES:BX and DS:SI regis- @@ -267,12 +271,14 @@ COMMANDS boot> machine mem -0x100000@0x00F00000 - regs Debugging command displaying register dumps. - oldbios Enable or disable the so-called "Old BIOS / Soekris helper", which restricts boot from loading more than one sector at a time from disc. + pxe Forcibly scan for a PXE boot ROM. + + regs Debugging command displaying register dumps. + macro Displays the names of all currently defined macros. Up to four can be defined, holding up to 256 characters. @@ -476,4 +482,4 @@ CAVEATS ustarfs This filesystem will be implemented soon. -MirOS BSD #10-current October 24, 2009 7 +MirOS BSD #10-current October 27, 2009 7