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- Path: sparky!uunet!dziuxsolim.rutgers.edu!pilot.njin.net!birchall
- From: birchall@pilot.njin.net (Shag)
- Newsgroups: comp.os.msdos.pcgeos
- Subject: Fun with disk-compression (Re: geos broken)
- Message-ID: <Dec.30.22.05.11.1992.3138@pilot.njin.net>
- Date: 31 Dec 92 03:05:12 GMT
- References: <1992Dec30.202334.1013@afterlife.ncsc.mil> <Dec.30.16.02.48.1992.27248@pilot.njin.net> <1992Dec31.022817.6140@afterlife.ncsc.mil>
- Organization: Screaming in Digital, the Queensryche Digest
- Lines: 47
-
- simard@afterlife.ncsc.mil (Donald Simard) writes:
-
- >Do disk compression utilities like SSTOR not work with GEOS? I do not
- >recall the manual talking about not using them!
-
- Disk compression utilities work as well with GEOS as they work with any
- other software. Unfortunately, it's relatively simple to make SSTOR,
- for example, puke. [This is why I don't use it.]
-
- When you set up SSTOR, it expects to actually achieve the degree of
- compression you specify. So, if you have a 50mb drive, and tell it to
- use 2x compression, it thinks it has 100mb.
-
- What would happen, though, if you really only got 1.5x compression?
- Bingo. You get 75mb worth of stuff onto the drive (compressed 1.5x to
- fit in a 50mb space), and SSTOR realizes that even though it's got 25mb
- of "logical drive" left, the _physical_ drive is full.
-
- Its method of dealing with this is simple - mark the remaining 25mb as
- bad blocks. So, wham-o, you've got a drive that's not only full, but
- has 25mb worth of disk errors. Of course, the _physical_ drive doesn't
- have 25mb worth of disk errors, but SSTOR isn't looking at that. :)
-
- Troubleshooting, Tips, and Extra Features, p.27:
-
- "GeoWorks Ensemble should run with disk compression programs, such as
- Stacker or DoubleDisk, on most computer systems. However, like disk
- caches, disk compression programs place heavy demands on your system -
- demands that may lead to system errors or even damaged files.
-
- "If you encounter problems using GeoWorks Ensemble on a system with a
- disk compression program, try installing it on a non-compressed disk.
- If that doesn't work, try using GeoWorks Ensemble without the disk-
- compression software loaded."
-
- If possible, you may want to consider installing GEOS in a non-SSTOR'd
- directory or logical drive, and using a compressed directory or drive
- for data files. Most data files created by GeoDraw will compress
- nicely, but it's safer to leave your system files uncompressed (IMO).
-
- -Shag
-
- --
- Shag | Operator, ShagNET | Editor of "Screaming in Digital"
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