Re: Undeleting HFS subdirectory?

[dempson@swell.actrix.gen.nz (David Empson)]

In article <1993Aug21.224916.9450@msuvx1.memst.edu> ustai@msuvx1.memst.edu writes:
> Hi,
> 	How do you undelete a subdirectory on a HFS partition on the HD?

Pray for a miracle, or build a time machine.  :-)

> I was in GSHK unGSHKing files (generally cleaning up all the stuff
> I've gathered over > the past year or so) and I accidently deleted
> the whole directory... ;-(  I don't really want to bring my HD over
> to a Mac to undelete it, but if I have to, is there any freewares out
> there that will do it for the Mac?

I don't know about Freeware, but there are Macintosh programs which
can undelete files (Norton Utilities, for example).

> And how will I have to make my HFS partition recognisable?  (I've
> followed the threads faithfully, but still don't quite understand
> it... :-()

As far as I know, if you don't already have a Macintosh device driver
on the hard drive, you're out luck.

In theory, one could be added later, provided you have the empty
partitions for the device drivers (created by System 6.0's version of
Advanced Disk Utility).  If you last partitioned your drive with
System 5.0.4 or earlier, then there is no way you can put a driver on
there without repartitioning the drive, which will lose everything.

If you formatted and partitioned the drive on a Macintosh, then there
should be no problem.

What program, computer and system software version did you use to
partition the drive most recently?

> 	Another question, with the driver for the Apple5.25disk
> enabled, will there be any instance where only ONE Apple5.25 icon (A)
> shows up?  I was in GSHK, went into CDA and deleted files, did a
> directory, only one 5.25 drive showed up, when I quit back into
> Finder, found only one 5.25 drive icon.  Is that normal?

Under System 6.0 and earlier, the Apple 5.25" driver polls the second
drive during boot to see if it is there.  The usual method for testing
for a drive's presence is to turn on the motor and watch the incoming
data line.  If it is changing, the drive must be present.  If it
doesn't change, there is probably no drive.

Some third-party 5.25" drives provide a constant data signal if 
there is no disk in the drive, so this method mistakenly thinks that
the drive isn't present.

Apple changed the driver in 6.0.1 so that it always gives you two
drives.  It then seems to work out at a later time whether the second
drive is actually there, and if not, gets rid of it.  I haven't worked
out when it does this (possibly after the first attempt to read from the
drive).

This may still be causing problems with third-party drives.  If you
have two 5.25" drives, try leaving a formatted disk in the drive, and
that should prevent it from disappearing.
-- 
David Empson                                                               
dempson@swell.actrix.gen.nz                                                
Snail mail: P.O. Box 27-103, Wellington, New Zealand