Higher capacity is achieved by crowding the tracks and shrinking the spacing
between marks and lands along the track. 63 minute CD-R discs used nominal
spacing, while 74 min. discs pushed the mark/land spacing. 80 min. discs use
marginal mark/land spacing and track spacing that is below the allowable
limit. 90 min. discs are even worse, and reputable manufacturers advise
their customers that such discs will fail in some drives.


I doubt that your objective is to make bad discs, but that will be the
result with 90 min., even if you can find them. Why not go to DVD?

Media Sciences, Inc.

> -----Original Message-----
> From: Association for Recorded Sound Discussion List
> [mailto:[log in to unmask]] On Behalf Of [log in to unmask]
> Sent: Friday, January 04, 2008 3:40 PM
> To: [log in to unmask]
> Subject: Re: [ARSCLIST] CD-R question
> Does anyone make a CD-R that records 90 minutes, rather than 80?
> Don Chichester
> **************Start the year off right.  Easy ways to stay in shape.