Spectrum Disk Preservation
(SDP) Project -
Questions & Answers:
The purpose of the SDP project
is to gather EDSK
images for disks that aren't already available on The
.TZX Vault or WOS.
It's an extention to the STP project but deals with software that was distributed on +3 disk.
As time goes by, the magnetic
surface of your disk(s) will become degraded with signal dropouts and sections
of data totally erased or unreadable. This seems to be worse on disks because
more of the surface is exposed to the elements than tape (which is wound
You'll not be able to load them into a real spectrum and the data on them will be lost forever unless you take action NOW !.
If you backup your disks using SamDisk v3+, then you have to opportunity to immortalise them in the EDSK
format and store them on the central archive WOS
(World of Spectrum) &
The .TZX Vault. If titles
are denied distribution, then still back them up for your own purpose, although
they cannot be put on-line at WOS
or The .TZX Vault they can
still be stored until such time that the software companies waive the ban
(This is currently a 'Work
In Progress'). Dave Batty has written a disk
dumping guide that is hosted on The
I've done a similar guide as well which include pictures, here's two links showing what I have so far:
* Andy's Disk Dumping Guide (using an Amstrad FD-1 & CPDRead)
* Andy's Disk Dumping Guide (using a 3" Floppy drive from CPC 6128 or Spectrum +3, with SamDisk).
* 3" Floppy drive adaptor and cable
The best file format to digitally backup spectrum disks (presently IMHO) is the EDSK format. The EDSK format will acuratly reproduce the source disk to give you an authentic backup. It's also possible to restore or repair your original backup disk if the data has degraded, SamDisk also allows writing back, though for copy protected disks you will need to adjust your drive speed.
For the SDP
project we are looking for EDSK images of the original disk
complete with loader, inlay
scans and instructions if possible.
The released images must also be free from bad sectors although in some cases we will release them until such time that we can obtain a better one.
Searching via inforseek is not available at this time, but you can still use the manually generated list to see what is required, the lists are available at the top of this page. No doubt there will be mistakes, but that's part and parcel of this project.
Please use the upload form. It would be advantageous if you could fill as much information as possible to help us identify the origin of the DSK being submitted.
If you are interested in helping
us out but don't have the hardware or knowledge to dump EDSK images, then
perhaps you'd consider loaning us the disks. I've loaned many disks before
and can give you references if needed.
Another way could be to make a monetary donation, whatever you like, it all helps.
We've set up PayPal accounts to take your donations:
Please be aware that this is in no way a profit making scheme it's simply to assist with fulfiling the MIA/STP/SDP projects. Any monies will only be available to Andrew Barker and Steve Brown. It will be used soley to buy auctioned (or from dealers) tapes and disks to resolved these projects and has no relation to WoS (or the TZX Vault itself for that matter) in any way.