Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!nrl-cmf!ames!amdcad!sun!pitstop!sundc!seismo!uunet!mcvax!enea!tut!santra!jmunkki
From: jmunkki@santra.UUCP (Juri Munkki)
Newsgroups: comp.sys.mac.programmer
Subject: Please Help: Used Blocks on Disk
Keywords: SCSI, AppleTalk, Help
Message-ID: <15732@santra.UUCP>
Date: 29 Aug 88 07:55:37 GMT
Organization: Helsinki University of Technology, Finland
Lines: 24

Last week I wrote a program that copies the contents of a hard disk
from one machine to a group of others in the appletalk network. Using
this program, you can update a whole classroom of computers without
having to manually copy the files from a disk or file server.

There are still some problems I'd like to solve and I haven't found
all the answers yet. The worst thing about my program is that it
copies every single block, even unused blocks. The second problem
is that I couldn't find a reliable way to find the size of the disk.

Optimally, I'd like to have a subroutine that takes the current
block number as a parameter and then returns the next used block
number and the number of following used blocks.

I would also like to know the official way to find out a disk's
ioRefNum and ioVRefNum.

If I get some useful help from the net, I'll clean up the program,
write a user interface and manual and make it public domain. I
might even make the sources public domain...

Juri Munkki
jmunkki@santra.hut.fi
jmunkki@fingate.bitnet