[Q] Internal sdcard unmounted, how to force remount?

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http://forum.xda-developers.com – I am able to install Roms off the external sd card, so the phone is usable. Stock and Custom roms produce the same problem. The internal storage seems to be unmounted and unresponsive. Browsing on pc, 'phone' storage is empty and I cant move files to it. in CMW I get 'couldn't open directory' when trying to browse for zips. Cant install some apps due to inability to access internel sd. So it seems internel sd is unmounted. Been browsing for hours with no concrete solutions. Mounting point must be corrupted. Help please! (HowTos)