Expansion Drive on Bolt

I've just converted over from FIOS DVR's/Set top boxes to a Tivo Bolt and Minis. I would like to expand the Bolt's recording capacity by attaching an ESATA drive. I picked up an ESATA enclosure at a local Micro Center. I have 3.5 inch drives from 500 Gig all the way up to 6 TB. I've read some of the comments on this and other forums, but still have some questions. I've started with a 500 Gig drive. I found that the Bolt when it powers up with the expansion drive attached gives me a message: This Tivo box has detected and expander. When I got to the next step it tells me that it doesn't support this device. I tried this with the drive formatted in FAT32 and NTFS. I'm using a Tivo supplied ESATA cable.

Where am I going wrong? I suspect that not all enclosures will talk to the Tivo, but it would be nice to get some guidance on this.

Thanks