test3 DVD ISO not a multiple of 32KiB blocks
James Ralston
qralston+ml.redhat-fedora-test at andrew.cmu.edu
Fri Apr 30 07:09:16 UTC 2004
FC2-test2-i386-DVD.iso was 4306010112 bytes, which is a multiple of
32KiB (specifically, 4306010112 bytes = 131409 32KiB-sized blocks).
However, FC2-test3-i386-DVD.iso is 4379752448 bytes, which is *not* a
multiple of 32KiB:
$ factor 4379752448
4379752448: 2 2 2 2 2 2 2 2 2 2 2 2138551
Therefore, growisofs pads it by 18432 bytes up to 4379770880 bytes
(133660 32KiB-sized blocks) when burning it. This makes it a pain to
verify the MD5 checksums; instead of being able to just run md5sum on
the device (e.g., "md5sum /dev/hdc"), you have to use dd to read only
the size of the ISO (without the pad).
Was FC2-test3-i386-DVD.iso not being a multiple of 32KiB blocks in
size intentional, or just an oversight? And will the DVD ISO for FC2
final be a multiple of 32KiB blocks in length?
--
James Ralston, Information Technology
Software Engineering Institute
Carnegie Mellon University, Pittsburgh, PA, USA
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