createhdf — Create a blank IDE hard disk image in .hdf format
[ -c ] [ -s ] [-v version
] cylinders heads sectors
createhdf creates a blank image of an IDE hard disk in .hdf format for use with
Sinclair ZX Spectrum emulators.
- 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.
- 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
- -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.
- specifies the number of cylinders in the image.
- specifies the number of heads in the image.
- specifies the number of sectors in the image.
- specifies the file to which the image should be
The .hdf format specification, at
The comp.sys.sinclair Spectrum FAQ, at
Philip Kendall (firstname.lastname@example.org).