I'm just guessing, but is this downloaded abandonware? If so, what you have may be a self-extracting zip or RAR file. These can be extracted either using windows or using whatever command line extractors are available for DOS (unrar on linux will extract these fine, although they will also extract …

Well, after about a decade I've got f19 stealth fighter running without the floppies! I did an install on an old dos machine at home, copied over the three or four unprotected f19 files and then tarred and bziped the directory (under linux). Came in at a massive 512k - nice and easy to transfer via …

Hum, I've just found an unprotect routine for f19, will see how it works later. Why I never found it last time I have no idea! I think I'll try your initial suggestion first though, just in case. These sims are also "protected" with the old "identify this object" quiz, but as I have the manuals …

Hi Qbix, Thanks for the reply! I should have mentioned that some time ago I tried taking disk images from the three 5 1/4" floppies and writing them to 3 3.5" floppies and installing on an old DOS machine lying around with no success - it noticed that the floppies weren't genuine. Mounting the disk …

I own the two sims mentioned in the subject line, but they're on 5 1/4" floppies. I would ideally like to run them under dosbox (I see someone else has managed f19 stealth fighter) but they have some kind of copy protection that requires the original floppy to be inserted every time the game runs. …