Could you please let me know the following:
1. Do any of the following registry entries point to your external drive?
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders(Check the values of the keys: AppData, Local AppData, Local Settings etc)
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders(Check the values of the keys: AppData, Local AppData, Local Settings etc)
2. Do you observe the same behavior with other applications such as Word, Excel etc as well?
All the keys in Shell Folders is set to C:
All the keys in User Shell Folders is set to %USERPROFILE%, also on C:
Sometimes it will spin up without reason, maybe the virus scanner. I don't notice it with other programs, mostly I just use Firefox, Maya and VLC though.
I have exactly the same problem. I have several external hard drives, and one is "asleep" most of the time. Adobe Reader unnecessarily spins it up every time it's opened - it appears to go "walkabout" around all the drives on my system. This also happens with Google Chrome sometimes.
So it seems that reader is checking to see if the files in the 'recent files' list are there. Recent files can't be set to 0? Why not? What purpose does it serve not to have that option???