Sony VGC-RM1 - Manual (Page 107)

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Upgrading Your VAIO Computer
Make sure you unplug the main unit and peripheral devices, including the access unit, from the power sources before installing or removing a hard
disk. Installing or removing a hard disk while the main unit is plugged to its power source may cause damage to the both units and the peripheral
devices as well as the hard disk.
The internal components of the main unit are too hot to touch immediately after you shut down your computer. Wait until the components cool down
before you attempt to install a hard disk.
The label of the installed hard disk, for example "Local disk (E:)" and "Local disk (F:)," depends on the hardware configuration of your computer. It may
also change after your computer recovery.
By default, recorded videos are stored on your C drive.