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createhdf(1)                       Emulators                      createhdf(1)


NAME

       createhdf -- Create a blank IDE hard disk image in .hdf format


SYNOPSIS

       createhdf [ -c ] [ -s ] cylinders heads sectors file


DESCRIPTION

       createhdf creates a blank image of an IDE hard disk in .hdf format for
       use with Sinclair ZX Spectrum emulators.


OPTIONS

       -c     specifies that the .hdf image should be created in `compact'
              mode, where only the low byte of every word is stored in the
              image. This is useful for saving space if the hard disk image is
              for use with an interface which accesses only the low byte of
              every word.

       -s     specifies that the .hdf image should not be created as a sparse
              file. Normally, createhdf will attempt to create the hard disk
              image as a `sparse file', where the operating system knows that
              the file consists mostly of zero bytes and fills those in
              without using any space in the file. This option disables this.
              (There's nothing `magic' about this: if data is written to the
              file, it will take up space just like any other data; it's only
              empty space which is synthesised by the operating system).

       -v version
              specifies the version of .hdf image to be created. Valid values
              are `1.0' for a version 1.0 file and `1.1' for a version 1.1
              file. Defaults to creating version 1.1 files.

       cylinders
              specifies the number of cylinders in the image.

       heads  specifies the number of heads in the image.

       sectors
              specifies the number of sectors in the image.

       file   specifies the file to which the image should be written.


BUGS

       None known.


SEE ALSO

       fuse(1), fuse-utils(1), libspectrum(3)

       The .hdf format specification, at
       http://www.zxshed.co.uk/sinclairfaq/index.php5?title=HDF_format.

       The comp.sys.sinclair Spectrum FAQ, at
       http://www.worldofspectrum.org/faq/index.html.


AUTHOR

       Philip Kendall (philip-fuse@shadowmagic.org.uk).

Version 1.1.1                   24th May, 2013                    createhdf(1)

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