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From: sdh@joevax.UUCP (The Doctor)
Newsgroups: net.micro.mac
Subject: Re: Stupid Question on Disk Space
Message-ID: <310@joevax.UUCP>
Date: Fri, 10-Oct-86 14:05:58 EDT
Article-I.D.: joevax.310
Posted: Fri Oct 10 14:05:58 1986
Date-Received: Sat, 11-Oct-86 20:47:43 EDT
References: <818@ur-valhalla.UUCP>
Organization: Bell Communications Research Inc., Morristown, NJ
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> Pardon my ignorance, but I don't quite understand why initialized
> single sided disks, using the MacPlus with System 3.2 and Finder 5.3,
> show "4K in disk    387K free". As I remember, it used to be "0K in
> disk    399K free". I thought the single sided initialization created
> an MFS volume as before. Why, then, the missing 9K?

First, the old versions of the finder did not correctly calculate the
number of K free on a disk,  I don't remember the exact details, but I
believe it had to do with making 1K = 1000 bytes instead of 1024.
Second, the new finder has corrected this bug.  The 4K is probably from
the file, DeskTop, which is invisible.  The extra used space would be for
a directory map. 

> While I'm at it, here's another question for the cognoscenti:
> Why does Switcher 5.0 run out of memory when I try to open more than
> one application? This happens on the upgraded 512K Macs (you know, the
> in-between Mac). Before the upgrade, I could easily open say, MacDraw,
> Word and Finder. Anyone have the answer?

I haven't seen this happen.  Have you checked the information window to
show memory usage?   Some memory may be lost because it is being used by
the system heap.  Do you have the RAM cache turned on?  That would take
a healthy chunk away.   Hyperdrives will also cache 40K from you.

Steve Hawley
joevax!sdh