On Mon, 5 Mar 2001 Jeff Hellige wrote: Hmm. What error messages does the software give when you try to format the disks? Can you successfully write data to the already-formatted disks? Try disabling blind reads and writes and enabling write verification, if possible (the Pinnacle software has per-partition options for that). Also, if you want to try formatting using Hard Disk Toolbox (say), don't power up the Mac with a Pinnacle-formatted disk in the drive. Insert the disk after booting; that way, the FWB driver will be used to access the disk, not whatever driver happens to be on the disk at the moment. Using a SCSI utility/diagnostic program, see how many sectors are in the primary and secondary defect lists. If there are many more in the secondary, that suggests that the drive lens and/or disk surface may be dirty. Cleaning the disk surface is easy (remember, with disk side A up, the surface for side A is underneath), so you may as well try that before attempting to open the drive. If you don't want to buy a purpose-designed disk cleaning kit you can use a lint-free cloth. Breathe on the disk and carefully wipe radially, rotate the disk slightly and repeat. Preferably wear some plastic gloves to prevent skin oils from touching the disk. For what it's worth, the Pinnacle Micro Mac driver is one of the few Mac SCSI packages that works on my Amiga with the ShapeShifter Mac emulator (even with ShapeShifter's I-can't-believe-the-bugs-in-that SCSI emulation). -- Mark