> On Mar 4, 2015, at 8:02 PM, Michael McMurtrey <skyking...@verizon.net> wrote:
> 
> I originally posted this on the G-4 Powerbook forum, but as it appears not to 
> have been updated in some time, I'm reposting it here in case it is an OS or 
> G4 issue not specific to PowerBooks.
> 
> One of my PowerBooks (a PowerBook5,7) has a mysterious folder labeled 
> "BaseSystem.pkg.159vQvGqc" containing a bunch of files with a ".plan" suffix. 
> What are these files? Can they be deleted?
> 

This looks like the remnants of an installation and can probably be safely 
deleted.

> The other PowerBook (PowerBook 5,9) has two folders, labeled "Var" and "Tmp," 
>  but no "BaseSystem" folder. What is their purpose? 
> 

Capitalized like that? or are they var and tmp? 

The latter are important parts of the underlying unix structure. 

Here's a listing of the root of my drive, all of these are folders:

Start Terminal, and enter:

cd /

and hit return.

now enter

ls

and hit return:

bruces-Mac-Mini:~ johnson$ cd /
bruces-Mac-Mini:/ johnson$ ls
Applications                    dev
Backup Extensions               en
Developer                       etc
Incompatible Software           home
Library                         installer.failurerequests
Network                         net
Old Extra                       opt
Old stuff Our files             oracle
System                          private
Users                           recipes
Volumes                         sbin
bin                             tmp
boot                            usr
cores                           var

Only some of those directories are visible in the finder.

bin, boot, cores, dev,etc,home,net, opt, private, sbin, tmp, usr and var are 
all normally hidden from view and are imortant parts of part of the unix file 
system. Apple makes these invisible for a reason...

> Both computers are running OS 10.5.8. All these folders are visible at the 
> root level in the hard drive menu on each computer. Why are some folders 
> visible on one but not the other?

You can make normally invsible folders visible on the desktop. 

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