More on Apple Education, Disk Images, Cloning Systems for the
Classroom, a Low-Cost Education Mac, and OS X Server
- 2003.01.16
Wrapping up some loose ends from recent Mac Lab Reports I have said many times that readers of this column often wind up
teaching me more than I knew to begin with. I like to think of it as
one more manifestation of the friendly nature of the Mac community
and Mac Web: More often than not, the letters I get politely point
out a more efficient way of doing things than the self-taught
routines I have shared in my columns.
I'm going to tie up a few loose ends here by "upgrading" my advice
and procedures with knowledge gained from reader letters. Read on:
there's some good stuff here. Advice to Apple EducationI've written several articles about how Apple could improve its
market share in education. Some of these suggestions have actually
come to pass (not through my efforts, I am sure, but who cares as
long as they happen?) So Kudos to Apple for the following Good
Things: - Making Jaguar available to teachers for free - at least for a
while.
- Prices on education lists have dropped a little more.
- New iBook cart configurations have been designed.
Things which still need work: - Focused leadership in the education sales division. We
miss those personalized sales reps. We really do.
- Fix that stupid eMac screen problem. That needs to go away.
Now.
- A turnkey lab solution with turn in folders on a LAN, student
account management for the classroom teacher, etc. would make a
killing. It shouldn't require a college degree to set up and
operate, either.
More Efficient Disk ImagesIn Never Misplace Another CD-ROM,
I outlined a procedure for duplicating CDs as image files to make
them automount without actually having the CD in the drive. Several
readers pointed out that if you open Disk Copy and then mount
a CD-ROM, it assumes you want to make a disk image and makes a
duplicate (including hidden files) of the proper size so there's no
guesswork and less wasted hard drive space. Many thanks to readers
Andrew Main, Frederick Silliman, and others who pointed this out.
Also, Ken Arroyo Ohori says he uses Toast's Save as Disk Image for
the same purpose. The first disk images I ever made were using Toast,
and while I haven't used the latest version, it should still
work. Cloning iBooks for Classroom UseEd Hurtley and Fred Goff both sent step-by-step instructions for
using FireWire Disk Mode more efficiently than the method I described
in Cloning iBooks for Classroom Use.
Instead of disabling the System Folder on the target Mac and copying
the master onto the now-empty clone, these readers suggested that I
put the Master into FireWire Disk Mode and boot the clone from
it. Hold down the option key to select an alternate boot disk as you
start up the clone, then pick the "other" Macintosh HD which appears.
Then you can use the disk utilities on the Master's hard drive to
initialize the clone's drive, and copy everything without any
finagling with the System Folder. Here's Fred's version: - Configure the Master.
- Plug the cable into the iBook you want to clone.
- Start up the clone in FireWire Disk Mode.
- Erase the clone hard drive.
- Copy the entire contents of the master to the clone.
- Open the system folder on the clone and close it again to
bless it.
- Unmount the clone drive.
- Restart the clone and tweak [change name, mainly] as
needed.
- Repeat 1-8 above for each additional clone.
I tried this, and it was much more efficient than the way I
originally did it. Worked like a charm. Thanks to Fred and Ed for the
streamlined version. Bring Back the CubeThere have been a whole string of articles that followed my
suggestion to bring back the Cube as an
education computer. Dan
Knight's analysis deftly dissects the idea from a practical point
of view. Subsequent articles by Anne
Onymus, Adam Robert Guha,
Chris Lozaga, and others carried
the discussion back to the general low-cost Mac that we would all
like to see available for schools. Of course, inspiring such a series
of interesting and thoughtful articles was my plan all along (cough,
cough) and I'm glad to see this important topic get some attention.
My vote as of today: A modified LC-style case with one PCI slot. OS X ServerAs many of you know I have been experimenting with OS X
Server. Here's an update on that little gem of a project. - Several readers suggested that I try out Netboot for the lab
so everything is preconfigured identically. That is an interesting
idea, but unfortunately Netboot requires a certain network
configuration (BootP?) that is not compatible with all of my
hodgepodge set of machines. I have a lab ranging from a Power
Mac 7200/75 up to 500 MHz iBooks and CRT iMacs, and some of
them just won't run OS 9. Not enough hard drive space, for
one thing. Some of the issues related to running such a mixed lab
are swimming around in my head for a future Lab Report.
- I've been experimenting with Macintosh Manager on my OS X
Server. My objective was to have security settings uniform across
the room and have server volumes automount. To make a long story
short: Don't try it over AirPort, because if you get a dropped
connection, the server that stores your settings disappears, and
then you can't log out because you have to have network access to
write certain files to the server. You have to log in as an admin,
reconnect to the server, and so on. To log in as an admin, you
have to log out the student. If the server connection goes down,
the clients can't even save work locally. Bad idea.
- In OS X Server running Macintosh Manager, unlike Foolproof,
there's no way to turn "everything on" and selectively turn off
the things you want to prevent access to, like the Chooser.
Instead, you must turn on everything you wish to use, and then
leave off the things you want to restrict. Microsoft Office just
will not operate properly unless the myriad cesspool of support
applications (Microsoft Internet First Run, Clip Art manager,
equation editor, etc.) are given permission to run. Also, since
Mac Manager is Multiple-Users based, you can't configure the
proxies on just one user; you have to do it on all of them.
Separately. Turning on the printer for one user doesn't fix it for
everyone as it does in a FoolProof environment. As noted above,
there are probably more efficient ways to set up the server, but
until I learn them, I decided it was wisest to cut my losses, go
with what I knew, and try to learn more about it later.
Well, that should bring you back up to speed with all my little
projects. Once again, thanks to everyone who took the time to
write. Oh yeah, one more thing: Bring back HyperCard!
Jeff Adkins is a science teacher who isn't afraid to state his preferences in computing platforms. In his classroom he has everything from a beige All-in-One to a a G4 XServe, and they all work together nicely. He calls himself the "poster child for technology integration" in the classroom. He was the 2006 Outstanding Educator of the Year for the California Computer Using Educators (CUE) organization. He also maintains a site for astronomy teachers at www.AstronomyTeacher.com. Recent Mac Lab ReportsLinks for the Day- Mac of the Day: Mac IIci, Sep. 1989 - The fastest Mac to date, the 25 MHz IIci was a real workhorse and a big hit.
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