On Thu, 13 Oct 2011 22:38:45 +0000, Alexander Best wrote: > On Fri Oct 14 11, Polytropon wrote: > > % ls /dev/acd0* > > /dev/acd0 /dev/acd0t04 /dev/acd0t08 /dev/acd0t12 /dev/acd0t16 > > /dev/acd0t01 /dev/acd0t05 /dev/acd0t09 /dev/acd0t13 /dev/acd0t17 > > /dev/acd0t02 /dev/acd0t06 /dev/acd0t10 /dev/acd0t14 /dev/acd0t18 > > /dev/acd0t03 /dev/acd0t07 /dev/acd0t11 /dev/acd0t15 /dev/acd0t19 > > otaku% ls|grep cd > cd0 > cdrom
% dmesg | grep ^acd acd0: DVDR <HL-DT-ST DVDRAM GSA-H42N/RL00> at ata1-master UDMA66 acd1: DVDROM <HL-DT-STDVD-ROM GDR8163B/0L30> at ata1-slave UDMA33 Those are parallel ATA drives, accessed by the ATAPI drivers. Because I can either access them as ATAPI drives as well as SCSI drives, they show up in both "subsystems": % atacontrol list ATA channel 1: Master: acd0 <HL-DT-ST DVDRAM GSA-H42N/RL00> ATA/ATAPI revision 7 Slave: acd1 <HL-DT-STDVD-ROM GDR8163B/0L30> ATA/ATAPI revision 6 % camcontrol devlist <HL-DT-ST DVDRAM GSA-H42N RL00> at scbus0 target 0 lun 0 (pass0,cd0) <HL-DT-ST DVD-ROM GDR8163B 0L30> at scbus0 target 1 lun 0 (pass1,cd1) In the kernel configuration, I have the following relevant settings: # ATA and ATAPI devices device ata device atadisk # ATA disk drives device ataraid # ATA RAID drives device atapicd # ATAPI CDROM drives device atapifd # ATAPI floppy drives device atapist # ATAPI tape drives options ATA_STATIC_ID # Static device numbering device atapicam # For "SCSI over ATA" # SCSI peripherals device scbus # SCSI bus (required for SCSI) device ch # SCSI media changers device da # Direct Access (disks) device sa # Sequential Access (tape etc) device cd # CD device pass # Passthrough device (direct SCSI access) device ses # SCSI Environmental Services (and SAF-TE) options SCSI_DELAY=100 # Delay (in ms) before probing SCSI [5000] So I can use both /dev/cd0 and /dev/acd0 to access the same drive, just are required, e. g. /dev/cd0 (equals /dev/dvd for consistency with the growisofs manpage) for burning CDs, and /dev/acd0 for audio playback (when accessed with cdcontrol). OS is x86 v8.2 STABLE of August 2011 with (obviously) custom kernel. If I remember correctly, the cdcontrol utility talks to the ATAPI "subsystem" which now has been melted somehow with the ATAPICAM ("SCSI") way of accessing devices... -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ... _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"