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20931Re: [aprsisce] Maps space vs sector size idea

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  • Lynn W Deffenbaugh (Mr)
    Nov 21, 2012
      About the only thing I've seen that will shrink well-constructed PNGs is 7zip.  It will even compress zips to some extent!

      The savings on an NTFS drive on a desktop machine isn't going to be anything to write home about because it typically uses a very small (4K?) cluster size.  It's when you start getting into FAT-formatted things like SD cards and external USB memory devices that the cluster-rounding waste gets to be a major consideration.

      Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

      On 11/21/2012 11:05 AM, Steve Daniels wrote:

      I just did a quick test by zipping my OSM directory, you don’t save any space from a file size point of view, but with 22MB of files, size on disk dropped from 27MB to 22MB, so it is worth considering some sort of “packing” for a 20% reduction in disk space used. (I rounded the figures)


      Steve Daniels

      Amateur Radio Callsign G6UIM

      Torbay Freecycle  Owner


      APRSISCE/32 Beta tester and WIKI editor http://aprsisce.wikidot.com


      From: aprsisce@yahoogroups.com [mailto:aprsisce@yahoogroups.com ] On Behalf Of Lynn W Deffenbaugh (Mr)
      Sent: 21 November 2012 05:17
      To: aprsisce@yahoogroups.com
      Subject: Re: [aprsisce] Maps space vs sector size idea



      Not that I know of, but if someone wants to take the time to track down
      such a "container file" approach for Windows Mobile (and optionally
      WinCE, but that's much more unlikely), I'd be glad to learn of it.

      Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

      On 11/21/2012 12:10 AM, Greg D wrote:
      > Hi Lynn ,
      > I wonder... I've been using an aging yet trusty HP 100LX Palmtop for
      > many years (since 1995, actually), and one of the techniques people use
      > to optimize space is to use a compressed drive. The technology of the
      > day was Stacker, then came DoubleSpace with Windows. The main purpose
      > was to get more space out of the limited drives then available (often up
      > to 2x), but a side effect was that the apparent sector size of the
      > compressed drive was fairly small.
      > Are there any equivalent utilities for WinCE (a verb) that would create
      > a new folder with files in it when you CD to it, but look like one big
      > file from the outside? That way you wouldn't have to use or invent your
      > own database, and you'd have full portability of the contents. Just
      > point to it and go.
      > Just a thought,
      > Greg KO6TH
      > ------------------------------------
      > Yahoo! Groups Links

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