Slow boot with My Book Essential 2~T~B connected to USB

Portable Drives My Passport
1

It takes about 5 minutes to boot up on my Windows Vista with My Book connected.  Without My Book connected boot-up is normal.  Any suggestions?

2

Try doing a diagnostics on the drive http://wdc.custhelp.com/app/answers/detail/a_id/940/session/L3RpbWUvMTM2MjI1MDkwNC9zaWQvSEwyRGRha2w%3D