The following is a list of physical storage devices supported in FreeBSD, and the device names associated with them.
Table 12-1. Physical Disk Naming Conventions
| Drive type | Drive device name |
|---|---|
| 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 5.1 releases. However this driver is back in the FreeBSD 5.X branch since June 16th, 2003. |
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