Disc File Layout

Hi,
It's been very quiet here, hopefully this list is still online!

I need some help understanding CD and DVD discs and how it relates to 
performance of loading files. I can't seem to find the right words to google 
for this information. I tried combinations of ISO9660, sector, file layout, 
transfer speed and ordering but couldn't find anything very useful. I also 
searched the SCE newsgroups.

1. Sectors are counted from the center of the disc, is this correct? E.g. 
the first sector is closest to the middle of the disc and the last one is 
the edge of the disc?

2. Do lower sectors seek faster? How about transfer speeds? Are they better 
towards the inner or outer areas of the disc?

3. Any general tips for laying out data on discs? I saw some posts on the 
newsgroups suggesting putting the elf in the early sectors so it loads 
faster, etc.

4. Any other things I should know about file placement? size of files?

Thanks,
Brett 


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