Hard drive appears few seconds after startup

I see the autorun message, where I get to pick what to do, none of the apps I have in my autorun folder located on that drive start, Dropbox says that the folder is missing, etc. It isn’t so bad, because the HD works just fine, but it’s very annoying, because I have to start it all manually.

It’s a My Book Essential Edition, 1 TB, model is WD10000H1U-00

It is not unusual to take few seconds to mount/appear hard drive when drive is 1TB or larger.

My 2TB take sometime close to 10 seconds to mount/appear.

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Is there anything I can do to make autorun and dropbox work properly?