Cygwin Help

Making an ISO image from cd-rom

Find out the number of blocks on the cd-rom as demonstrated below.

bash$ df Filesystem 1k-blocks Used Available Use% Mounted on C:\cygwin\bin 10243768 5636528 4607240 56% /usr/bin C:\cygwin 10243768 5636528 4607240 56% / c: 10243768 5636528 4607240 56% /cygdrive/c d: 588620 588620 0 100% /cygdrive/d

In the above list, d: corresponds to the cd-rom drive. The number of blocks in the cd-rom drive is 588620. To make iso image use the dd command as follows:

bash$ dd if=/dev/scd0 of=file_name.iso bs=2048 count=$((588620/2))

The number of blocks get divided by 2 to convert blocks to sectors. file_name.iso is the name of the output iso file. /dev/scd0 is the POSIX name mapped to NT cd-rom device.