Granite Digital USB Emergency Drive - Manual (Page 13)

Granite Digital • 3101 Whipple Rd. • Union City, Ca. 94587 www.granitedigital.com
Page 13 Diagnosing Problems
3- THE DRIVE DOES NOT RUN AS FAST AS IT SHOULD :
USB bus speed is determined by four things:
1- The drive performance level. Faster drives (10,000rpm) have higher
data transfer rates and make a difference in speed. A larger buffer size also
improves drive performance.
2- The USB 1.1 vs. 2.0 technology. Older USB installations run at a
much slower speed. We recommend that the Bridge Adapter be used with
USB version 2.0.
3- The computer itself is slow. The faster the computer the faster its USB
performance. The USB bus uses CPU overhead and the faster the CPU
performance the faster the bus will operate.
4- The Operating System. Older Mac and PC OS versions do not
perform as well as newer ones. Using the most advanced and recent OS
will offer a dramatic improvement in speed.
4- IDE DRIVE DOES NOT SHOW UP :
Drives use either the CABLE SELECT or MASTER setting. If the drive
doesn’t show up try the other setting.