Hmm, [panther:~]$ sdd -help Usage: sdd [option=value] [-flag] Options: if=name Read input from name instead of stdin of=name Write output to name instead of stdout -inull Do not read input from file (use null char's) -onull Do not write output to any file ibs=#,obs=#,bs=# Set input/outbut buffersize or both to # cbs=# Set conversion buffersize to # ivsize=#,ovsize=# Set input/output volume size to # count=# Transfer at most # input records iseek=#,iskip=# Seek/skip # bytes on input before starting oseek=#,oskip=# Seek/skip # bytes on output before starting seek=#,skip=# Seek/skip # bytes on input/output before starting ivseek=#,ovseek=# Seek # bytes on input/output volumes before starting -notrunc Do not trunctate existing output file -pg Print a dot on each write to indicate progress -noerror Do not stop on error -noerrwrite Do not write blocks not read correctly -noseek Don't seek try=# Set error retrycount to # if -noerror (default 2) -debug Print debugging messages -fill Fill each record with zeros up to obs -swab,-block,-unblock,-lcase,-ucase,-ascii,-ebcdic,-ibm [panther:~]$ The -noerror and try=# parameters should take care about errors. regards, chris