Mads V. Pedersen wrote:
I'd like to point back to the first paragraph where I wrote of my verbal skills. The truth is I've got a degree in physics, though that was 25 years ago. I don't know how I screwed the calculation, but obviously I did ;).Hi Andrew,
Andrew Robinson wrote:
I'm trying to teach myself how to use mkisofs and cdrecord. I'm a little ahead on mkisofs, though that is like saying my verbals skills are better than my math skills because I can say "Ma Ma" but I cannot add 2+2.
Anyway, I wrote a script that uses mkisofs to create an iso of mp3 files from an m3u play list. The size of the iso file is 747200512 bytes. When I try burning it with gnome toaster, it refuses because it says the track is too large. The CDR is supposed to hold 700 MB, which according to my calculator equates to 786432000 bytes. So either there is overhead in burning the iso to disk or the CDR maker is figuring megabytes the way hard disk manufacturers do.
Hmmm.... Maybe the problem is with your calculator. I get:
$ dc 1024 1024 * 700 * p 734003200
I've copied the output of 'cdrecord dev=2,0,0 -atip' below. There is a blank CDR in the drive. I don't see where it is telling me how much space is available on the disc. Can you help me some more?
My question is this. Is there a way to determine exactly how large an iso file a CDR will hold? I looked at the man page for cdrecord and found options that will tell me about the recorder, but not the media. But I'm pretty sure Nero and Toast on other OS's will tell me how much space is available on the CDR.
check the -atip option of cdrecord.
Thanks!
Andrew
Cdrecord-Clone 2.01a19 (i686-redhat-linux-gnu) Copyright (C) 1995-2003 Jörg Schilling
Using libscg version 'schily-0.7'
Device type : Removable CD-ROM
Version : 0
Response Format: 2
Capabilities :
Vendor_info : 'LITE-ON '
Identifikation : 'LTR-52246S '
Revision : '6S0C'
Device seems to be: Generic mmc CD-RW.
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC-3 SWABAUDIO BURNFREE FORCESPEED
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
ATIP info from disk:
Indicated writing power: 5
Is not unrestricted
Is not erasable
Disk sub type: Medium Type A, high Beta category (A+) (3)
ATIP start of lead in: -11634 (97:26/66)
ATIP start of lead out: 359848 (79:59/73)
Disk type: Short strategy type (Phthalocyanine or similar)
Manuf. index: 3
Manufacturer: CMC Magnetics Corporation
