I'm attempting to create images of some 5.25" floppies containing text documents. The disks were created using an IBM XT and a word processor called Wordcraft. I'm able to extract some content using a 40 track MFM profile, but the documents appear to be split into three files - one file with a .doc extension, another with the same name but a .001 extension, and a third ending in 001.fileslack. DIgging down using some forensics software indicates all three files have content. I'm unsure whether it's an issue with the software used to create the files (which apparently had some form of hardware plug in DRM), the drive itself or the profile used to create the image. Has anyone come across anything similar?
I would try to check that your extraction tool properly recognizes the file system and disk size (160k, 180k, 320k, 360k, 1.2mb, or some other oddball size). For example, a problem with some very early IBM pc low-density 5.25" disks is that 160k and 320k formats use 8 sectors per track, but disk copiers would add an unused 9th sector to each track. DOS would read these disks fine, but that confuses many disk utilities. In some cases where there is a mismatch, file extraction tools may attempt to extract files, but the file will contain data from the wrong area on the disk.
I have never heard of the "Wordcraft" word processor. Even if it is copy protected, do you have a copy of this software?
A common problem with older file formats is that often the only way to meaningfully view the content is to view it with the software it was authored in. This is not always possible as the software may not be available, may be copy protected, or no existing machine or emulator can run it.
The disks were definitely created with an IBM XT. You can see the write protection dongles here if anyone's interested. https://en.wikipedia.org/wiki/Software_ ... ion_dongle The presence of data in the fileslack makes me think though that the issue is with the drive or the image creation.