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Diffstat (limited to 'diag/mbr/README')
| -rw-r--r-- | diag/mbr/README | 17 |
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diff --git a/diag/mbr/README b/diag/mbr/README new file mode 100644 index 0000000..786816c --- /dev/null +++ b/diag/mbr/README @@ -0,0 +1,17 @@ +Diagnostic MBR/VBR files + +handoff.bin Show the data that the BIOS/MBR hands off to an MBR/VBR. + + + +++ USAGE +++ + +NOTE: in the examples, mbr.bin, /dev/hda and /dev/hda1 are used as generic representations. + +Writing out an MBR is straight forward (it is assumed below that /dev/hda is the target raw device and /dev/hda1 is the target partition): + + dd conv=notrunc bs=440 count=1 if=mbr.bin of=/dev/hda + +Writing a VBR to match Syslinux requires more work as it must have a jump and be offset into the partition (and as a result the code must be compatible with this offset): + + echo -en "\0353\0130\0220" |dd conv=notrunc bs=1 count=3 of=/dev/hda1 + dd conv=notrunc bs=2 count=210 seek=45 if=mbr.bin of=/dev/hda1 |