19.2 Device Names

The following is a list of physical storage devices supported in FreeBSD, and their associated device names.

Table 19-1. Physical Disk Naming Conventions

Drive typeDrive device name
IDE hard drivesad
IDE CDROM drivesacd
SCSI hard drives and USB Mass storage devicesda
SCSI CDROM drivescd
Assorted non-standard CDROM drivesmcd for Mitsumi CD-ROM and scd for Sony CD-ROM devices
Floppy drivesfd
SCSI tape drivessa
IDE tape drivesast
Flash drivesfla for DiskOnChip® Flash device
RAID drivesaacd for Adaptec® AdvancedRAID, mlxd and mlyd for Mylex®, amrd for AMI MegaRAID®, idad for Compaq Smart RAID, twed for 3ware® RAID.