/dev/hdb:

ATAPI CD-ROM, with removable media
	Model Number:       Slimtype DVDRW SLW-831S                 
	Serial Number:      
	Firmware Revision:  WRS1    
Standards:
	Supported: CD-ROM ATAPI-2 
Configuration:
	DRQ response: 50us.
	Packet size: 12 bytes
Capabilities:
	LBA, IORDY(cannot be disabled)
	DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2 
	     Cycle time: min=120ns recommended=120ns
	PIO: pio0 pio1 pio2 pio3 pio4 
	     Cycle time: no flow control=240ns  IORDY flow control=120ns
Commands/features:
	Enabled	Supported:
	   *	PACKET command feature set
	   *	DEVICE_RESET command
	   *	Mandatory FLUSH_CACHE