Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!rutgers!apple!oliveb!amiga!cbmvax!daveh
From: daveh@cbmvax.UUCP (Dave Haynie)
Newsgroups: comp.sys.amiga
Subject: Re: Undelete
Message-ID: <6393@cbmvax.UUCP>
Date: 24 Mar 89 04:12:08 GMT
References: <315@mohawk.cs.utexas.edu>
Organization: Commodore Technology, West Chester, PA
Lines: 40

in article <315@mohawk.cs.utexas.edu>, bryan@cs.utexas.edu (Bryan Bayerdorffer @ Wit's End) says:
> Spam-Content: Within EPA limits
> In article <13473@gryphon.COM> richard@gryphon.COM (Richard Sexton) writes:

> =-I use DiskSalv.

> 	For me too, and I can even go make myself a sandwich during the 20
> minutes that DiskSalv takes to scan my 80meg partition.

Well, you could get a smaller drive.  Or start DiskSalv at the disk ROOT,
where you often find most files located.  But other than that, there's not
a heck of alot I can do to speed up the scanning phase (the last bit of
speedup I did involved the little "DiskSalv Scan" window that opens up
during a scan; writing directly to the window, rather than to a console,
made scanning over twice as fast.  If you want it any faster, use the 
QUICK option.

While it's by no means a perfect solution to your problem, a new version
of DiskSalv is nearly complete that makes this kind of thing less painful
if not perfect.  The new version supports a new option that will let you
scan and match a given file name regular expression.  Thus, 

	DiskSalv DF0: DRF: FILE #?.c

Would scan for only files that match the #?.c pattern, in any directory,
on the input disk.  

A true undelete program, aside from possessing the ability to relink a file 
rather than just recover it as DiskSalv does, would do well to get real
smart about the directory scanning phase of the operation.  There's really
nothing you can do, in worst case, to avoid scanning over most of the 
disk, but you can make some intelligent guesses about where a child file
might be if you know where its parent is.  I have been thinking on the
subject, but unfortunately haven't had any time to go beyond the thought
stage on this one.  

-- 
Dave Haynie  "The 32 Bit Guy"     Commodore-Amiga  "The Crew That Never Rests"
   {uunet|pyramid|rutgers}!cbmvax!daveh      PLINK: D-DAVE H     BIX: hazy
              Amiga -- It's not just a job, it's an obsession