External eSATA drive write protected

[icehole]

I have an external drive I am using for backups with Acronis Home and the damn thing keeps getting write protected.

I can remove the write protection with diskpart only if the drive is open in Explorer and in a day or two it goes back to write protected and Acronis can't save to it.

I did what is outlined in this THREAD and it hasn't helped.

I need HELP!

 

[icehole]

Yesterday I cleared the read only settings on the drive, Acronis did it's backup fine and I turned the system off for the night.

This morning I turned the drive on then powered on the system and the drive is write protected again. Diskpart wouldn't clear the read only attributes.

I turned the drive off for a couple of minutes and then turned it back on and it is no longer write protected.

I am using WIn 7 Home x64 now. I didn't have this problem with the drive when I was using XP Home 32 bit.

Any ideas other than waiting until Windows has loaded to turn the drive on?