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- Newsgroups: comp.sys.ibm.pc.misc
- Path: sparky!uunet!rei2!fox
- From: fox@rei.com (Fuzzy Fox)
- Subject: Re: New Stacker
- Message-ID: <1992Sep15.182509.2344@rei.com>
- Date: Tue, 15 Sep 1992 18:25:09 GMT
- References: <Steven_P._Oliver.036w@bearsden.UUCP> <1992Sep10.165416.14551@rei.com> <1992Sep14.193532.4713@microware.com>
- Organization: Recognition Equipment, Inc.
- Lines: 25
-
- kris@microware.com (Kris Hoffmeyer) writes:
-
- >I don't understand how stacker does not have slack space...
- >Stacker does allow you to set the file block size, but it installs
- >at 8K blocks, right? So if a file or it's last block is less than
- >8K, the rest is "slack", isn't it?
-
- It's true that DOS will not use this space, but Stacker is not DOS.
- Stacker will store other data in the unused space. This is a major way
- that Stacker achieves its data compression.
-
- The STACVOL file used by Stacker has 512-byte clusters internally.
- Stacker tells DOS that it uses 8K clusters, but inside, where you can't
- see, it uses 512-byte clusters. DOS has the wrong idea about what is
- actually going on in its clusters.
-
- This raises the point that if a program expects to write data beyond the
- EOF for a file (some virus protectors might do this), then these
- programs will not work with Stacker. Has anyone seen this behavior?
-
- --
- #ifdef TRUE | Fuzzy Fox fuzzy@netcom.com
- #define TRUE 0 | a.k.a. David DeSimone an207@cleveland.freenet.edu
- #define FALSE 1 |
- #endif | How's my posting? Call 1-800-ALT-FLAME
-