Am Freitag, den 21.05.2010, 10:04 +0200 schrieb Adrian Glaubitz: > On Fri, May 21, 2010 at 12:46:38AM +0200, manner.moe@gmx.de wrote: > > >glaubitz@z6:~> ./himdformat_scg 9,0,0 > > >?: Input/output error. himd_format: scsi sendcmd: no error > > The scsi communication works fine: scsi sendcmd: no error. > > > > >CDB: C2 00 00 00 03 00 00 00 00 00 00 00 > > >status: 0x2 (CHECK CONDITION) > > >Sense Bytes: 70 00 03 00 00 00 00 0A 00 00 00 00 30 00 00 00 > > >Sense Key: 0x3 Medium Error, Segment 0 > > >Sense Code: 0x30 Qual 0x00 (incompatible medium installed) Fru 0x0 > > Look at the sense output: incompatible medium installed > > Are you shure you tried to format a standard MD in himd format? > > Formatting 1GB mediums doesn´t work with this command. > > I think we need "C2/00 erase himd" instead. > > Yes, Michael pointed me to that issue in the channel yesterday > already. I checked our documentation in the wiki [1] and it seems to > be wrong at this point unfortunately: > > * C2/00: Erase HiMD > * C2/01: Format HiMD > > I tried 0x00 but that didn't work. And, puzzingly enough, the original > himdformat which is in git/master as well, uses 0x03 to format and I'm > pretty sure that it worked before with (well, ok, I'm not sure whether > it was with a 235MB or a 1GB medium). It's pretty convinced. The "3" is not the format subcommand, but a flags byte. I will add the info to the wiki soon. Erase HiMD as well as Format HiMD have the following syntax: 12 bytes total. cmd[0] is 0xC2 - Sony Device Control (or however you call it) cmd[3] is the subcommand. In himdformat.c, this is 0, so it's "Erase HiMD" cmd[4] is the flags byte. For Erase and Format: Bit 0: IMMED (probably as in http://en.wikipedia.org/wiki/SCSI_Start_Stop_Unit_Command, so it means not to wait until formatting is finished if set) Bit 1: FUA (probably: "force unit access" as in http://en.wikipedia.org/wiki/SCSI_Write_Commands, so it means that the formatting/erasing should be directly written to the medium, not just to the cache) Bit 2: NOFS (only for Format HiMD, probably means that the medium should be formatted but no new FS created). Regards, Michael Karcher