Device Names
The following is a list of physical storage devices supported in FreeBSD, and the device names associated with them.
Table 16-1. Physical Disk Naming Conventions
| IDE hard drives | ad |
| IDE CDROM drives | acd |
| SCSI hard drives and USB Mass storage devices | da |
| SCSI CDROM drives | cd |
| Assorted non-standard CDROM drives | mcd for Mitsumi CD-ROM, scd for Sony CD-ROM, matcd for Matsushita/Panasonic CD-ROM [a] |
| Floppy drives | fd |
| SCSI tape drives | sa |
| IDE tape drives | ast |
| Flash drives | fla for DiskOnChip ® Flash device |
| RAID drives | aacd for Adaptec ® AdvancedRAID, mlxd and mlyd for Mylex ®, amrd for AMI MegaRAID ®, idad for Compaq Smart RAID, twed for 3ware ® RAID. |
| Notes: a. The matcd (4) driver has been removed in FreeBSD 4.X branch since October 5th, 2002 and does not exist in FreeBSD 5.0 and later releases. |
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