On Tue, 12 Oct 2004, Jean Pierre Wenzel wrote: > Hello! > > I recently got a Sony MZ-NH 900 Hi-MD walkman that can be used as a USB > storage device (and, in its primary function as a portable MiniDisc audio > player...).
Sorry, I'm not clear on the terms. Is a MiniDisc is a small-sized CD disc or is it a hard disk? In other words, is it writable? > It is possible to put data on it under Windows but unfortunately, the device > is recognized correctly as a usb-storage device but syslog tells me that > the device has no proper partition table. Well, maybe it doesn't have a partition table. There's nothing necessarily wrong with that. CDs don't have partition tables, for example. Nor do floppy disks. > $ cat /proc/bus/usb/devices says: > > T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 4 Spd=12 MxCh= 0 > D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 > P: Vendor=054c ProdID=0183 Rev= 1.00 > S: Manufacturer=Sony > S: Product=Hi-MD > C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA > I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=05 Prot=50 Driver=usb-storage > E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms > E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms > > The syslog says: > > Oct 12 17:29:27 kastenfrosch kernel: usb 2-1: new full speed USB device using > address 4 > Oct 12 17:29:28 kastenfrosch kernel: scsi2 : SCSI emulation for USB Mass > Storage devices > Oct 12 17:29:28 kastenfrosch kernel: Vendor: SONY Model: Hi-MD WALKMAN > Rev: 1000 > Oct 12 17:29:28 kastenfrosch kernel: Type: Direct-Access > ANSI SCSI revision: 02 > Oct 12 17:29:28 kastenfrosch kernel: Attached scsi removable disk sda at > scsi2, channel 0, id 0, lun 0 Clearly the device reports itself as a hard disk. > Oct 12 17:29:29 kastenfrosch scsi.agent[3597]: disk > at /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0/host2/2:0:0:0 > Oct 12 17:30:37 kastenfrosch kernel: SCSI device sda: 138363 2048-byte hdwr > sectors (283 MB) But it has 2048-byte sectors! In general hard disks use 512-byte sectors, whereas CDs use 2048-byte sectors. So I'm confused. > Oct 12 17:30:37 kastenfrosch kernel: sda: assuming Write Enabled > Oct 12 17:30:37 kastenfrosch kernel: sda: assuming drive cache: write through > Oct 12 17:30:37 kastenfrosch kernel: SCSI device sda: 138363 2048-byte hdwr > sectors (283 MB) > Oct 12 17:30:37 kastenfrosch kernel: sda: assuming Write Enabled > Oct 12 17:30:37 kastenfrosch kernel: sda: assuming drive cache: write through > Oct 12 17:30:37 kastenfrosch kernel: sda: unknown partition table > > The disk has been formatted using the "Format" function on the walkman. It is > no 1GB Hi-MD disk but a "normal" 74 minutes Minidisc formatted in Hi-MD mode > (doesn't make any difference except the size of course). But as 1GB media is > very hard to find at the moment I prefer to have music instead of data on > it :) What's the difference between a Hi-MD disk and a "normal" Minidisc? And what is Hi-MD mode? Alan Stern ------------------------------------------------------- This SF.net email is sponsored by: IT Product Guide on ITManagersJournal Use IT products in your business? Tell us what you think of them. Give us Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more http://productguide.itmanagersjournal.com/guidepromo.tmpl _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
