Originally Posted by Dimwit
OS level? Don't think so. I'm using XP and Calibre is polling the A: drive constantly, not the Kobo. I don't know why and shutting off the A: drive because of Calibre doesn't seem to be the right direction to me. As soon as I unmount the Kobo the polling stops. Something is in Calibre that's buggered.
When calibre detects the kobo, it asks windows for the list of drives so it can mount the kobo's memory. This causes windows (not calibre) to poll A:. If the kobo is not completely detected (busted memory or an unknown drive string), the process repeats in a bit.
If you have a "fix" for this "bug", I am sure that Kovid would love to have it. He said as much in the bug report that I pointed toward.