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Clarified virtual sector size of El Torito. Changed germanoid use of "eventual".

release-1.5.4.branch
Thomas Schmitt 5 years ago
parent
commit
83b864efd2
  1. 10
      doc/boot_sectors.txt

10
doc/boot_sectors.txt

@ -68,9 +68,9 @@ intervals for:
- Directory trees, tables, boot catalog, embedded partitions and filesystems.
- Data file content, including content of El Torito boot images.
The Boot Record is an ECMA-119 Volume Descriptor which is eventually located
at 2 kB block number 17 (decimal). Its content points to the location of the
Boot Catalog.
The Boot Record is an ECMA-119 Volume Descriptor which is located at 2 kB block
number 17 (decimal), if present at all. Its content points to the location of
the Boot Catalog.
The format is described in part by ECMA-119 8.2 "Boot Record" and further
specified by El Torito figure 7.
@ -177,7 +177,7 @@ Byte Range | Value | Meaning
| |
5 - 5 | 0 | Unused
| |
6 - 7 | sec_count | Sector Count.
6 - 7 | sec_count | Sector Count. Sector size 512:
| | "the number of virtual/emulated sectors the system
| | will store at Load Segment during the initial boot
| | procedure."
@ -232,7 +232,7 @@ Byte Range | Value | Meaning
| | 0 if not emulation == 4.
5 - 5 | 0 | Unused
| |
6 - 7 | sec_count | Sector Count.
6 - 7 | sec_count | Sector Count. Sector size 512.
| | See above Initial/Default Entry
| | libisofs stores 1 for emulated boot_media and a
| | user defined value for boot_media == 0. Often: 4.

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