18.2. Device Names

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

Table 18.1. Physical Disk Naming Conventions

Drive type	Drive device name
IDE hard drives	`ad` or `ada`
IDE CD-ROM drives	`acd` or `cd`
SATA hard drives	`ad` or `ada`
SATA CD-ROM drives	`acd` or `cd`
SCSI hard drives and USB Mass storage devices	`da`
SCSI CD-ROM drives	`cd`
Assorted non-standard CD-ROM drives	`mcd` for Mitsumi CD-ROM and `scd` for Sony CD-ROM devices
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.