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).