[G4] Strange CDROM experience

[David Crandon]

Two possibilities come to mind.

One, the G4's drive does not have as good error correction or it's laser
isn't as capable of reading damaged disks as the newer iMac.

Second, and most likely, there were so many errors on the disk that the
data stream to the CD recorder wasn't fast enough and you got buffer
under run errors.

David Crandon

"L. Rugolo" wrote:
> 
> I needed to make a copy of an old CDROM which was rather dirty and
> scratched on each side. I cleaned it as well as I could, but when I
> tried to burn it (Que!Fire, Titanium Toast 5) on my PowerMac G4
> (Gigabit Ethernet, MacOS 9.2.2, 20GB HD, 703MB RAM) I got many error
> messages about "bad" files. The result was that I made two
> "coasters", the first burned at 1:1, the second at 8:1. So I gave up
> on trying to burn a copy of the CD and instead just tried to make
> finder copies of the individual files and folders. Again, many of the
> files were corrupted and had to be skipped.
> 
> Then I slipped the old CDROM into my wife's slot-loading iMac; much
> to my surprise I was able to copy all the files to her hard drive
> with no errors. The two computers are connected via ethernet and
> through file sharing I transferred the files to my G4. Then I got the
> idea of creating the CD I wanted by using "data copy" instead of
> "disk copy", so I dragged the folder of stuff which I had transferred
> over from the iMac into Toast and burned the CD at 8:1 with
> absolutely no errors. (The Que!Fire drive is attached to the G4 and I
> didn't want to go through the bother of attaching it to the iMac.)
> 
> My question:  Why did my G4 find errors on the old CDROM when the
> iMac found none? Was it the disk or is there a problem with the CD
> drive on the G4 and if so does it need to be repaired or cleaned? I
> have never before encountered any problems trying to read or copy any
> other CDs on the G4. Incidentally, the G4 is about 2.5 years old and
> the iMac is just about one year old.
> 
> Thanks for listening.
> 
> --Larry
> 
> ----------
> G4ist, a listserv for discussion of everything G4.
> FAQ at <http://www.themacintoshguy.com/lists/G4.html>.
> Send a message to <G4-DIGEST at themacintoshguy.com> to switch to the digest.
> 
> XRouter | Share your DSL or cable modem between multiple computers!
> Dr. Bott | Now $139.99      <http://www.drbott.com/prod/xrouter.html>
> 
> Dr. Bott LLC   4-port USB Hub in translucent Graphite!
> Dr. Bott LLC   <http://www.drbott.com/prod/ghub.html>
> 
> Small Dog Electronics   http://www.smalldog.com  | Canon Digital Cameras |
> --Quicksilver & refurbished G4's arriving daily! |   and Camcorders!!    |
> 
> MacResQ Specials: LaCie SCSI CDR From $99! PowerBook 3400/200 Only $879!
> Norton AntiVirus 6 Only $19! We Stock PARTS! <http://www.macresq.com>
> 
> OS X News, Dr.Mac, Forums, Tutorials, Tips, Hints, FAQ?s - http://www.osxfaq.com