Yamaha CRW2100SX - Manual (Page 30)

Setup Procedures
21
4 Power up your CRW2100SX drive first, then your computer.
n When you power up the CRW2100SX, make sure the LED on the front panel blinks
in green attempting reading disc information. (P. 32)
Power ON
Always power up the devices in your SCSI chain before powering up your
computer. This will ensure that they are recognized by the computer’s
operating system.
Do not disconnect any devices in your SCSI chain while the computer is
on.