It can take nothing more than an unexpected power surge or thunder storm to corrupt the disc you're working on. and leave that all-important data barely damaged but impossible to get at. Of course, you will have kept a recent backup of your work, possibly more than one. and if you're very well-prepared (unlikely), you will have left them in different places or buildings to safeguard against every conceivable kind of non-nuclear disaster.
Most of us aren't anywhere near that well organized so the PCW Toolkit was designed. It's a very user-friendly data recovery package; as Moonstone Computing point out in their confidence-boosting manual, the job you're using the toolkit for is likely to be difficult enough without them making it any harder. Whatever you do with the toolkit, whether it's unerasing a file or logging in a disc, the screen display highlighting all the available options is continually present. This means that you don't have to keep consulting the manual every five minutes.
The program has got three command modes: Command. Edit and Copy. With the first one. you can select things like drives and discs and examine tracks, sectors and blocks on a suspect disc. In Edit mode, you can move the cursor around the display window (which shows the 'innards' of sectors read from the disc), fill a block with a value and CUT and PASTE data into other sectors. COPY mode, not surprisingly, lets you copy tracks or whole discs whether they're damaged or not and is one of the program's most powerful features.
The PCW Toolkit provides a variety of functions to help you copy and recover data from discs in amounts varying from a few bytes through to a whole disc. In Command mode, for example, you can use the PASTE key to build up a file on drive M which consists of data taken from other sectors on the disc. Provided you can find the contents of a file, you can roll out a new file sector by sector on drive M. Using CUT and PASTE within Edit mode, on the other hand, you can ‘cut out' data, place it in a buffer and re-insert it at any other place in the sector.
Full marks go to the manual for making a potentially incomprehensible examination of data storage and the make-up of discs understandable to the complete novice. It also has a useful technical reference section. All in all. PCW Toolkit is a good buy for the PCW user who either works at normal levels of efficiency or who is particularly accident-prone. That probably covers most of us.
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L'Amstrad CPC est une machine 8 bits à base d'un Z80 à 4MHz. Le premier de la gamme fut le CPC 464 en 1984, équipé d'un lecteur de cassettes intégré il se plaçait en concurrent du Commodore C64 beaucoup plus compliqué à utiliser et plus cher. Ce fut un réel succès et sorti cette même années le CPC 664 équipé d'un lecteur de disquettes trois pouces intégré. Sa vie fut de courte durée puisqu'en 1985 il fut remplacé par le CPC 6128 qui était plus compact, plus soigné et surtout qui avait 128Ko de RAM au lieu de 64Ko.