Thank you for looking and Exactly. I've tried my usual movie back up HD ( probably mac extended OS ) and that went play. I'll try reformatting MS-Dos
I would have guessed that no Mac-specific format was going to work. Just doesn't seem likely.
Is there any way to format it directly from the player, and then see what format it is and if it will mount on your Mac? There should be a way to do that. I've got a DISH Hopper box where I can use a USB drive, but I thought it was some proprietary file system.
I've got an old Sony Blu-Ray player with a USB port, but I thought that was just for a USB flash drive for BD Live. The one thing I did like about the USB port was that it would accept a USB keyboard, and I could use that as an input rather than using the keypad to search through letters. Never tried a hard drive though.