isosize(8) [redhat man page]
ISOSIZE(8) SG_UTILS ISOSIZE(8) NAME
isosize - outputs the length of a iso9660 file system SYNOPSIS
isosize [-x] [-d <num>] <iso9660_image_file>... DESCRIPTION
This command outputs the length of an iso9660 file system that is contained in given file. That file may be a normal file or a block device (e.g. /dev/hdd or /dev/sr0). In the absence of any switches (or errors) it will output the size of the iso9660 file system in bytes. This can now be a large number (> > 4 GB). -x output in humanly readable form the block count and the block size. Output uses the term "sectors" for "blocks". -d <num> only has affect when "-x" is not given. The number output (if no errors) is the iso9660 file size in bytes divided by <num>. So if <num> is the block size then the output number will be the block count. The size of the file (or block device) holding a iso9660 file system can be marginally larger than the actual size of the iso9660 file sys- tem. One reason for this is that cd writers are allowed to add "run out" sectors at the end of a iso9660 image. sg3_utils-0.91 December 2000 ISOSIZE(8)
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disktab(5) File Formats Manual disktab(5) Name disktab - disk description file Syntax #include <disktab.h> Description The file is a simple data base that describes disk geometries and disk partition characteristics. The format is patterned after the termi- nal data base. Entries in consist of a number of fields separated by colons (:). The first entry for each disk gives the names that are known for the disk, separated by vertical bars (|). The last name given should be a long name fully identifying the disk. The following list indicates the normal values stored for each disk entry: Name Type Description ns num Number of sectors per track nt num Number of tracks per cylinder nc num Total number of cylinders on the disk ba num Block size for partition `a' (bytes) bd num Block size for partition `d' (bytes) be num Block size for partition `e' (bytes) bf num Block size for partition `f' (bytes) bg num Block size for partition `g' (bytes) bh num Block size for partition `h' (bytes) fa num Fragment size for partition `a' (bytes) fd num Fragment size for partition `d' (bytes) fe num Fragment size for partition `e' (bytes) ff num Fragment size for partition `f' (bytes) fg num Fragment size for partition `g' (bytes) fh num Fragment size for partition `h' (bytes) pa num Size of partition `a' in sectors pb num Size of partition `b' in sectors pc num Size of partition `c' in sectors pd num Size of partition `d' in sectors pe num Size of partition `e' in sectors pf num Size of partition `f' in sectors pg num Size of partition `g' in sectors ph num Size of partition `h' in sectors se num Sector size in bytes ty str Type of disk (e.g. removable, winchester) The entries can be automatically generated with the program. Files See Also chpt(8), newfs(8) disktab(5)