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New API call iso_write_opts_set_partition_img().

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This commit is contained in:
Thomas Schmitt
2010-10-18 16:56:00 +02:00
parent ebb5937568
commit b58d1e28ef
8 changed files with 268 additions and 73 deletions
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4
doc/boot_sectors.txt
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@ -266,9 +266,8 @@ Cylinder/Head/Sector (C/H/S) and Logical Block Address (LBA). Both are based
on units of 512 bytes. So MBR_LBA = ISO_LBA * 4.
For C/H/S, the sector address is broken up into whole cylinders, remaining
heads, and remaining sectors. The nomenclature seems to stem from antique
heads, and remaining sectors + 1. The nomenclature seems to stem from antique
drum storage.
C/H/S counting starts with 0/0/1, not 0/0/0.
There are two parameters, sectors_per_head and heads_per_cylinder which are not
stored in the MBR. So it is more or less arbitray how to convert a LBA into
a C/H/S address and vice versa. For maximum range of C/H/S addresses one
@ -306,6 +305,7 @@ Byte Range | Value | Meaning
451 - 453 | ========== | C/H/S address of last absolute sector in partition
451 - 451 | end_head | Heads part of end address.
452 - 452 | end_c_s | Bits 0 to 5 : Sectors part of end address.
| Values: 1 to 63, not 0.
| | Bits 6 to 7 : Bits 8 to 9 of cylinders part.
453 - 453 | end_cyl | Lower 8 bits of cylinders part of end address
| |