1.15 lets you install to a hard drive - but only ONCE. The installer writes back to the disk to prevent you from doing it again. If the hard drive crashes and you didn't have a full backup then you had to buy a new copy of Word!
Why does this sound familiar? Oh, right, because Office 2013 was going to do something similar. It was going to serialize itself to your computer, so if you got a new computer, or even just replaced the motherboard, you have to buy a new copy! (It seems Microsoft may have backed down from this restriction of Office 2013 for now)
Well, its nice to know that Microsoft have been dickheads since the beginning.
So lets take a closer look at the "protection". It uses an interesting scheme of 12 256-byte sectors at the end of the disk. One of these sectors is given an ID that incorrectly says it is a 1024 byte sector. PC disk controllers can format such a track, but attempts to read the sector will fail. Running the executable from the floppy also depends on finding certain information on this track. So what is in there?
It turns out these sectors contain some really entertaining bitching about copying:
Sector 1:
Sector 2:
Sector 3:
Sector 4:
Sector 5 (CRC error when read as 1024 byte sector. Seems blank, but one source says there may be a serial number in the between-sector information it exposes )
Sector 6
Sector 7: (Blank, format fill)
Sector 8: (Blank, format fill)
Sector 9:
Sector 10: (Blank)
Sector 11: (Blank)
Sector 12: (Blank)
[画像:The tree of evil bears bitter fruit, crime does not pay. THE SHADOW KNOWS. Trashing program disk.]
And finally, Microsoft Word shutting YOU down!
Word displays this message if it thinks it detects a debugger running. Reportedly this was also present in other Microsoft tools of the time period (Multiplan, Access Communications, etc).
Interestingly, it actually displays this on one of my computers!
With all this kind of crap, it makes one wonder what kind of other nasty code might be inside this program.
In the late 80s and 90s most software vendors stopped using this kind of copy protection because it was not guaranteed to be compatible with all IBM PC clones, more software was run only from hard drives, and users often needed to move the program between 360K, 720K, 1.2mb, and 1.44mb formats at will. It was also enough of a support problem, that it sometimes forced users to turn to competitors (remember when we used to have competition?).
In summary, Word for DOS is really a text-mode application with mouse
support shoehorned in. It ran in graphical mode just so Microsoft could
advertise it as a "WYSIWYG" environment and give their new mouse something
to click on.
