we need help on extraction of ISO from CD!!

[TIFR students <hbcsestuds@yahoo.com>]

we are encountering the following error while
extracting an ISO image from Knoppix CD.somebody
help!!

$ extract_compressed_fs /cdrom/KNOPPIX/KNOPPIX >
/knx/source/first.iso
30369 blocks of size 65536. preamble:
#!/bin/sh
#V2.0 Format
modprobe cloop file=$0 && mount -r -t iso9660
/dev/cloop/ 
$1 exit $?

Block 0 length 0 => 65536
Uncomp: not enough out room 0



Help!!

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