NAME

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

SYNOPSIS

       createhdf [ -c ] [ -s ] [-v version] 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.

       -h, --help
              give brief usage help, listing available options.

       -V, --version
              output version information.

       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).