Displaying 2 results from an estimated 2 matches for "bi_reserved".
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ci_reserved
2018 Jan 12
1
isolinux.bin checksum
...Name Size Meaning
8 bi_pvd 4 bytes LBA of primary volume descriptor
12 bi_file 4 bytes LBA of boot file
16 bi_length 4 bytes Boot file length in bytes
20 bi_csum 4 bytes 32-bit checksum
24 bi_reserved 40 bytes Reserved
The 32-bit checksum is the sum of all the 32-bit words in the
boot file starting at byte offset 64. All linear block
addresses (LBAs) are given in CD sectors (normally 2048 bytes).
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2018 Jan 09
2
isolinux.bin checksum
Hi,
Ady wrote:
> This is a quote from Wonko/Jaclaz, who has also been investigation this
> issue and deserves credit for it:
> Ok, not that I understand the code, but what *somehow* happens is that
> the "embedded" checksum in Isolinux.bin (starting from 4.00) is the
> checksum of the WHOLE file (i.e. starting from offset 0 instead of 64)
> at a time when:
> 1)