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- From: jfreter@triton.unm.edu (The Myth)
- Newsgroups: comp.os.msdos.apps
- Subject: Re: SSTOR and Stacker question
- Message-ID: <-zgmn3p@lynx.unm.edu>
- Date: 23 Jul 92 16:26:12 GMT
- References: <ywR0NB1w164w@infopls.chi.il.us> <ayfmrql@lynx.unm.edu> <14kfcdINNde1@agate.berkeley.edu>
- Organization: University of New Mexico, Albuquerque
- Lines: 31
-
- In article <14kfcdINNde1@agate.berkeley.edu> yuval@violet.berkeley.edu (Yuval Oren;B1E;26199;8436073;ZA87) writes:
-
- I write:
-
- >>Similar process for SuperStor. One good thing about backing up the big file,
- >>only (and not the physical drive), is that you can restore to any hard drive,
- >>even one without SuperStor installed. These programs and compressed files
- >>are totally invisible to most disk I/O. So, you can copy a file from a
- >>compressed disk to a floppy and have the floppy version be totally uncomp-
- >>ressed.
- >
- Yuval writes:
-
- >Now I'm confused. What exactly is the big file on my "drive d:"? Say I
- >back it up, and then my hard disk dies. So I want to restore it to a
- >new one without installing Stacker on it. What would restoring this
- >one file do? Would it just give me a big file on my new hard drive?
- >How would I get to my files. And if I just restore Drive C, would that
- >give me my files in compressed format?
- >
- >
- When you restore that big file, you get it back. All you have to do to
- re-access the file is re-load the proper drivers into RAM. That big file
- contains all the files that you have compressed. Basically what happens
- is that the files you write to the disk are examined by the drivers. The
- drivers compress the files and store them more closely together (cluster
- sizes are effectively smaller). The net effect is that files that are
- big in size take up fewer real sectors/clusters on the hard-disk. There
- is no easy way to tell exactly how big the compressed files are (without
- using a calculator), since DOS thinks that the hard drive is around 2
- times bigger.
-