"Simon P. Lucy" wrote:
> 
> On 04/12/2001 at 18:44 Phillip M. Jones, C.E.T. wrote:
> <delenda est>
> >> > Everyone was using a utility called something like Drive Space or
> >> > Double Space that would let you hold 40megs of info on a 20 meg
> >> > hard drive. Using this utility though at the time, the hard drives
> >> > tended to fail in a short period of time and need replacing.
> >>
> >> Completely unrelated.  First, Doublespace was a compression program.
> >> Saying a 20 meg drive could hold 40 megs was like saying a 40 meg file
> >> will zip to 20 megs.  If you stored nothing but .exe files which don't
> >> tend to compress well on it, you would see a loss of space on the drive.
> >>
> >> Doublespace could not cause a drive to mechanically fail, any more than
> >> any other program that reads and writes to the disk can cause it to
> >> fail.
> >
> >Unless it was another utility, I read and was told that what it did was
> >rewrite the directory in such a way that it caused to drive write to
> >more of the sectors on the drive. Making the drive work harder to try to
> >write in-between sectors. If that's wrong. then the information givenat
> >the time was wrong at the time.
> 
> DoubleSpace and similar OS extensions could expose weak drives/controllers,
> they also tended to suffer from fixed buffer overflow problems so that the
> drive could become corrupted.  Running a compressed drive close to its
> theoretical maximum size could also cause problems.
> 
> Simon

Thanks for saying doing as you say "could" cause weak drives to fail sooner

DoubleSpace and similar OS extensions could expose weak drives/controllers

Anyway Quit using the Utilities at the time made the drives last longer
even though they wouldn't hold as much (at that time in history).
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