hmount is used to introduce a new HFS volume. A UNIX pathname to the volume's source must be specified.
The source may be a block device or a regular file containing an HFS volume image.
If the source medium is partitioned, one partition must be selected to be mounted. If there is only one
HFS partition on the medium, it will be selected by default. Otherwise, the desired partition number must
be specified (as the ordinal nth HFS partition) on the command-line. Partition number 0 can be specified
to refer to the entire medium, ignoring what might otherwise be perceived as a partition map, although in
practice this is probably only useful if you want this command to fail when the medium is partitioned.
The mounted volume becomes "current" so subsequent commands will refer to it. The current working
directory for the volume is set to the root of the volume. This information is kept in a file named
.hcwd in the user's home directory.
If the source medium is changed (e.g. floppy or CD-ROM disc exchanged) after hmount has been called,
subsequent HFS commands will fail until the original medium is replaced or a different volume is made
current. To use the same source path with the different medium, reissue the hmount command.