Check the following : Have you installed Everio MediaBrowser™ 4/ Everio MediaBrowser™ 4 BE?
Product description. You' ll rarely have to switch out memory cards with this ultra convenient JVC Everio GZ- MS120B Digital Camcorder: it has not one, but two SD/ SDHC memory card slots, giving you the ability to record up to 80 hours of continous footage!
In addition to its dual card slot design, this black camcorder features a 2. 7- inch widescreen LCD display with simple laser touch operation.
All- Weather- Proof Outdoor Camcorder JVC Everio R!
HD HARD DISK CAMCORDERS.
Also for: Everio gz- ms110, Everio.