Sony PCV-RS423P - Manual (Page 73)

Additional information about Memory Stick media
If your computer does not recognize your Memory Stick ® media, you may have removed the media from the Memory Stick
slot before data access had completed. If this occurs, follow these steps:
1. Remove the Memory Stick media from the slot.
2. Shut down your computer by closing any open software programs, and then turn off your computer.
3. Wait approximately 30 seconds, and then restart your computer.
Your computer recognizes the Memory Stick media, when you insert it into the Memory Stick slot again.
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