That's a mkisofs default feature. It's added after Volume Descriptor Set Terminator.This means that good developers/guys can also actually "embed" in the .iso the actual info about the EXACT command parameters they used
Some developers/guys prefer to zero this sector.
Be aware: this can be impossible.2) find the path of boot-image file using LBA.
There is no need to include boot image to file system, example a default XP installation CD.
All isolinux and grub does include boot image to file system so far.
Other examples:
Floppy emulation:
BIOS Update T60 http://www-307.ibm.c...MIGR-67020.html
El Torito specs allows floppy emulation:
1 1.2 meg diskette
2 1.44 meg diskette
3 2.88 meg diskette
Extract 2880 sectors per 512 bytes, start at LBA 21.Eltorito defaultboot header:
Bootid 88 (bootable)
Boot media 2 (1.44MB Floppy)
Load segment 7C0
Sys type 0
Nsect 1
Bootoff 15 21
Hard disk emulation:
BIOS Update W510 http://www-307.ibm.c...ocid=MIGR-74859
Hard disk image size is unknown.Eltorito defaultboot header:
Bootid 88 (bootable)
Boot media 4 (Hard Disk Emulation)
Load segment 7C0
Sys type 6
Nsect 1
Bootoff 1B 27
Simple, half broken assumption: start at LBA 27 up to end of media
Correct: calculate hard disk size from hard disk image MBR
El Torito specs
Hard Disk images may only have 1 partition in the partition table and it must be the first entry.