Re: [OT] Making images from CDs
> > On Tue, Jul 24, 2001 at 12:39:06AM -0400, Thomas J. Hamman wrote:
> > > First, a simple question: What is the correct command-line way of
> > > copying a CD to an image file on the hard drive? Is a simple "dd
> > > if=/dev/cdrom of=cd.img" command sufficient? Or do I need to run
I use copy by "dd" comannd with exact # of sectors specified. That
should eliminae problems reported.
http://www.aokiconsulting.com/quick/ch5.html#s5.5.8 (correct site)
5.5.8 Make an image file of CD
Some CD-R and commercial CD have junk sectors at the end which makes
copy by dd impossible (Windows 98 CD is one of it). The cdrecord
package comes with readcd command. Use this to copy any CD contents to
image file. If it is a data disk, mount it and run "mount" to see
actual size. Divide number shown (in blocks=1024byte) by 2 to get
number of actual CD sectors (2048 Byte). Run readcd with option and
use this disk image to burn CD-R/RW.
# readcd [target] [lun] [scsibusno] # select function 11
Here, set all 3 command line parameter to 0 for most case. Sometimes
number of sector given by readcd has few excess! Use above number from
actual mount for better result.
My CD-R = +2 sectors
MS Windows CD = +1 sector, i.e., +2048 byte
--
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+ Osamu Aoki <debian@aokiconsulting.com>, GnuPG-key: 1024D/D5DE453D +
+ My debian quick-reference, http://www.aokiconsulting.com/quick/ +
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