How to enable SD MSC mount in Jelly Bean? Since upgrading to CyanogenMod 10, the dropdown notification when I connect my phone to the computer no longer appears. How do I mount the SD card via USB MSC in Jelly Bean? Note that the drive still appears to the computer, just empty. My phone is an Xperia Arc S.

Update: I see no mass storage mode under USB connection settings:


Settings screen (click image to enlarge)
Seems as if Google is evil¹ and removed that option from Jelly Bean to enforce their DRM schemes². I found however a tool which restores it: Automated Framework Kit

¹Like we didn’t already know that.

²I have no idea what was the rationale behind it, but remember it’s the company which has a mail service that’s immensely popular despite not properly working with any major mail client.