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2006
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Mon, Dec 11, 2006 8:35 pm

Using Full Media Capacity with cdrw

I downloaded a Knoppix ISO file to one of my Solaris 10 systems and attempted to create a Live CD from the .iso file using the cdrw command. However, when I attempted to do so, I received a "size required is greater than available space" error message.


bash-3.00$ cdrw -i KNOPPIX_V5.0.1CD-2006-06-01-EN.iso
Looking for CD devices...
Initializing device...done.
Size required (730036224 bytes) is greater than available space (681986048 bytes).

The file I was trying to write to the CD was 696 MB, which won't fit on a 650 MB CD, but I was using an 80 minute 700 MB CD.

The problem can be resolved by using the -C option with the cdrw command. Without that option, cdrw will assume a default capacity of 650 MB for CDs. To use the full 700MB capacity, you need the -C option.


     -C       Uses stated media capacity.  Without  this  option,
              cdrw  uses  a  default value for writable CD media,
              which is 74 minutes  for  an  audio  CD,  681984000
              bytes for a data CD, or 4.7 Gbytes for a DVD.

Once I used the option, I was able to write the .iso file to a blank CD.


bash-3.00$ cdrw -C -i KNOPPIX_V5.0.1CD-2006-06-01-EN.iso
Looking for CD devices...
Initializing device...done.
Writing track 1...40 %

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