I/0 controllers

I/O controllers

 IDE--Integrated Drive Electronics

• Primary Masters--------/dev/hda
• Primary Slave----------/dev/hdab
• Secondary Master-----/dev/hdc
• Seconday Slave-------/dev/hdd

SCSI/SATA/USB---Small Computer System Interface/Serial Advanced Technology Attachment/Universal Serial Bus

• First SCSI Disk-----/dev/sda
• Second SCSI DISk--/dev/sdb

USB-Disks and SATA Disks have same convention as SCSI.