Sony Cyber-shot DSC-T9 User's Manual / Troubleshooting page 23

On image data stored in the internal memory
We recommend that you copy (back up) data without fail using one of the following methods.
To copy (back up) data on a "Memory Stick Duo"
Prepare a "Memory Stick Duo" with a capacity of 64 MB or more, then perform the procedure
explained in [Copy] (page 54).
To copy (back up) data on a hard disc of your computer
Perform the procedure on pages 60 to 65 without a "Memory Stick Duo" inserted in the
camera.
• You cannot move image data on a "Memory Stick Duo" to the internal memory.
• By connecting the camera and a computer with a cable for multi-use terminal, you can copy data stored in
the internal memory to a computer, but you cannot copy data on a computer to the internal memory.
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