Ok wondering if anyone has had this issue and a fix for it? Brand new RH-1 (replaced an N707). Installed software on WinXP machine, then downloaded updates from sony,works no problem, uploaded old MD recordings, transfer ect works great, same in data mode. Problem with Macintosh OS 10.4.10. Downloaded Hi-MD 2.0 software, installed fine,Hi-MD monitor is running and transfer software opens fine. Connected rh-1, Mac says the disk is unusable, and presents the options, initialize, ignore or eject. (standard mac dialog box). And transfer software says device/media not present. According to system profiler RH-1 is connected to USB. Disk utility reports that the volume in the RH-1 is a FAT16 disk and reports the correct size for the disk in the machine, (tried 80mn and 1GB, Both formated in Hi-MD through SS on windows, also tried the 1gb disk before reformating it in SS) Unit is in Hi-MD mode. But disk utility says it is not mounted and pressing the mount button in disk util does nothing. Was looking forward to using the data function between home and work computers. iBook G4 1.3Ghz, 512 Ram, OS 10.4.10 Anyone got any ideas? Mike