The on-board storage for music on my F06 is around 20GB. Has anyone ever replaced the HDD with something bigger? e.g. an SSD. This would leave the two USB slots available for other duties.
I would be surprised if this was worth the bother - surely nobody uses this feature anymore anyway?
If you've got two USB slots then you likely have a very old version of iDrive (The second port in the glovebox was removed in about 2012 and was only used for map updates anyway), not sure what else you'll be able to do with them if you don't use them for music?