Re: SuperDrive vs DVD-R 4x media...

[Mark Secker]

Note that DVD's spin MUCH MUCH faster than CD's even at "one speed" 
they are spinning - um (off the top of my head - tech check please!) 
4 to 6  times faster than a CD so  2x DVDR burn the disk is actually 
spinning at  about the same speed  as 8 or 12 x CDR burn.


the drive it's self will only burn at it's manufactured burn speed 
(unless apple throtles them back which I don't think has been 
mentioned in any forum)


much like using high speed CD's (52x) in an old  4x speed CD burner 
you will never burn faster than the the cd burners 4 speed maximum.


you buy high speed media to burn safely in a higher speed drive 
rather than to up your burn speed in a slower drive.


the main issue with the higher speed drives is that once a disk 
starts spinning at the high speeds the media can start to "flutter" 
if it's not designed to spin at the higher speeds slot loading drives 
tend to be more prone to this than tray loading drives.


putting older/cheaper/lower quality disks in to a high speed burner 
will risk damaging the media and possibly the drive -  imagine a 
child's toy spinning top that has lost equilibrium or using an ice 
cream container lid as a frissbie (sp?)  the disk  actually warps and 
distorts inside the drive unit.
I used some old 4 speed CD disks in an external  52 speed burner and 
while I told it to burn it at only 4 speed the drive its self span 
the disk up to near full speed before throttling back and in each and 
every case  the disk produced an awful clattering noise and the disk 
was spat out after a few seconds of burn time with "media errors" and 
massive scratches  around the surfaces (both sides)




--
~
Mark Secker Computer Support Officer
ph#6488 1855 (ECEL) 
University of Western Australia - CRICOS Provider No. 00126G
~
"Only he who attempts the absurd is capable of achieving the impossible."
- Miguel de Unamuno
"It takes an idiot to do cool things that's why it's cool"
  FLCL

 (sometimes works)

Re: SuperDrive vs DVD-R 4x media...

[James / Hans Kunz]

my 17" powerbook has a superdrive aswell (brand: matshita) and does 
only 1x or 2x dvd burn speed, the drive must be designed to run on the 
4x, if i use a 4x dvd-r then i only can burn it @ 2x, i trialled 
"general" & "tdk" (appleshop / dick smith) disks, both seems to be fine 
@ 2xJames


On 10/02/2004, at 21:27, Mark Heeler wrote:


Superdrive vs. DVD-R 4x media
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
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I have a eMac (running 10.3.2) with a Superdrive. This is a factory 
DVR-104 listing the device revision as A227.


Using Apple DVD-R 4x media, I can only seem to have the option to burn 
at 1x which seems a little strange.


There is no firmware update available unlike some early flat panel 
iMacs and others with the same drive (see below).


Anyone else have this issue or know what I can do to fix it ?

I know it isn't a critical problem but I could save some time waiting !

Regards

Mark

PS. There is a Tech Note 
(http://docs.info.apple.com/article.html?artnum=86130) that includes 
the following info that states that
the eMac should be able to burn 4x media and that my device is "up to 
date" !


(here is a bit of the note...)

How can I tell if I need this update?

If you have an iMac (17-inch Flat Panel), eMac with SuperDrive, Power 
Mac G4 (Mirrored Drive Doors) with SuperDrive, or PowerBook G4 
(1GHz/867MHz) with SuperDrive you do not need this update. Your 
computer's SuperDrive is already compatible with high-speed media. 
Computers that do not have a SuperDrive do not need this update.


Follow these steps to determine if your computer's SuperDrive needs to 
be updated:


  1. Choose Apple System Profiler from the Apple menu (Mac OS 9), 
or open it from the Utilities folder (Applications/Utilities) in Mac 
OS X.
  2. Click the Devices and Volumes tab. Locate the CD-RW/DVD-R 
device listing.
3. Click the disclosure triangle to the left of the device listing to 
get more information.


* If the Vendor Identification field names a manufacturer other 
than Pioneer, you don't need this update.
* If the Vendor Identification field names Pioneer as the 
manufacturer, your drive may need the update.
  o For drives with the Product Identification DVR-104, no 
update is required if the Device Revision number is A227 or higher.
o For drives with the Product Identification DVR-103, no update is 
required if the Device Revision number is 1.90 or higher.


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SuperDrive vs DVD-R 4x media...

[Mark Heeler]

Superdrive vs. DVD-R 4x media
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Return-Path: : [EMAIL PROTECTED]

I have a eMac (running 10.3.2) with a Superdrive. This is a factory DVR-104 
listing the device revision as A227.

Using Apple DVD-R 4x media, I can only seem to have the option to burn at 1x 
which seems a little strange.

There is no firmware update available unlike some early flat panel iMacs and 
others with the same drive (see below).

Anyone else have this issue or know what I can do to fix it ?

I know it isn't a critical problem but I could save some time waiting !

Regards

Mark

PS. There is a Tech Note (http://docs.info.apple.com/article.html?artnum=86130) 
that includes the following info that states that
the eMac should be able to burn 4x media and that my device is "up to date" !

(here is a bit of the note...)

How can I tell if I need this update?

If you have an iMac (17-inch Flat Panel), eMac with SuperDrive, Power Mac G4 
(Mirrored Drive Doors) with SuperDrive, or PowerBook G4 (1GHz/867MHz) with 
SuperDrive you do not need this update. Your computer's SuperDrive is already 
compatible with high-speed media. Computers that do not have a SuperDrive do 
not need this update.

Follow these steps to determine if your computer's SuperDrive needs to be 
updated:

  1. Choose Apple System Profiler from the Apple menu (Mac OS 9), or open 
it from the Utilities folder (Applications/Utilities) in Mac OS X.
  2. Click the Devices and Volumes tab. Locate the CD-RW/DVD-R device 
listing.
3. Click the disclosure triangle to the left of the device listing to get more 
information.

* If the Vendor Identification field names a manufacturer other than 
Pioneer, you don't need this update.
* If the Vendor Identification field names Pioneer as the manufacturer, 
your drive may need the update.
  o For drives with the Product Identification DVR-104, no update is 
required if the Device Revision number is A227 or higher.
o For drives with the Product Identification DVR-103, no update is required if 
the Device Revision number is 1.90 or higher.