bergler@informatik.tu-muenchen.de (Roland Bergler) (03/04/91)
I got trouble reading tapes written on other unix-machines on my Mountain filesave 150 with QIC-02 interface with SCO-unix 3.2.v2.0. The tapes were written on a sun tape drive using tar, and can be read on virtually any othr unix systems, includeing SCO with SCSI streamer. (i didn't try other mountain / SCO-environments, for i dont have access to any other except mine) I tried reading the tape with tar, dd and even cat </dev/rct0, but all i get is Read I/O error (from dd and tar). tapes are writte in 150MB and 60MB formats, doesnt't work with either. can anybody help?? roland
mjl@lccma.bos.locus.com (Mike Leibensperger) (03/07/91)
In article <1991Mar4.121608.8473@Informatik.TU-Muenchen.DE>, bergler@informatik.tu-muenchen.de (Roland Bergler) writes: >I got trouble reading tapes written on other unix-machines on my >Mountain filesave 150 with QIC-02 interface with SCO-unix 3.2.v2.0. >The tapes were written on a sun tape drive using tar, and can be >read on virtually any othr unix systems, includeing SCO with SCSI streamer. Yup. That's because Sun jumped on the quarter inch cartridge (QIC) bandwagon early, so Sun QIC tapes use the older QIC-10 on-tape format rather than QIC-24. Some QIC-24 tape drives have a QIC-10 compatibility mode that you can set from software, often through the SCSI "mode select" sickness. Other drives can be physically jumpered (yech!). Still other drives have no QIC-10 compatibility and you are up the Ganges without an air freshener. This is probably a FAQ in the comp.tape.qic.lossage newsgroup, if such exists. Grep your tape drive manual for "QIC-10". Good luck. yr obdnt svnt, mjl -- Michael J. Leibensperger <mjl@locus.com> "None are so deeply enslaved Locus Computing Corp./Boston as those who falsely believe 25 Burlington Mall Road they are free." Burlington MA 01803, (617)229-4980 x169 -- J. W. von Goethe
mjl@lccma.bos.locus.com (Mike Leibensperger) (03/07/91)
In article <22497@oolong.la.locus.com> mjl@lccma.bos.locus.com (Mike Leibensperger (THAT'S ME!)) writes: > > In article <1991Mar4.121608.8473@Informatik.TU-Muenchen.DE>, > bergler@informatik.tu-muenchen.de (Roland Bergler) writes: > >I got trouble reading tapes written on other unix-machines on my > >Mountain filesave 150 with QIC-02 interface with SCO-unix 3.2.v2.0. > >The tapes were written on a sun tape drive using tar, and can be > >read on virtually any othr unix systems, includeing SCO with SCSI streamer. > >Yup. That's because Sun jumped on the quarter inch cartridge (QIC) >bandwagon early, so Sun QIC tapes use the older QIC-10 on-tape format >rather than QIC-24. Actually I may have been premature in blaming your problem on QIC-10/24 incompatibilities, since you say other UNIX machines have no problem reading your Sun tapes. You might try writing a tape on a non-Sun and seeing if your Sun can read it. It's possible that your other vendors have drives and/or driver software that can read either QIC-10 or QIC-24. If your Sun cannot read a known QIC-24 tape, then it is possible that your SCO/Mountain setup may need additional driver support or controller re-jumpering to read the QIC-10 format that your Sun is writing (as I stated in the previous article). Viel Glu:ck! I remain... > > yr obdnt svnt, > mjl >-- >Michael J. Leibensperger <mjl@locus.com> "None are so deeply enslaved >Locus Computing Corp./Boston as those who falsely believe >25 Burlington Mall Road they are free." >Burlington MA 01803, (617)229-4980 x169 -- J. W. von Goethe -- Michael J. Leibensperger <mjl@locus.com> "None are so deeply enslaved Locus Computing Corp./Boston as those who falsely believe 25 Burlington Mall Road they are free." Burlington MA 01803, (617)229-4980 x169 -- J. W. von Goethe