Sony HANDYCAM DCR-TRV330 Operating Instructions Manual page 122

Deleting images
To cancel deleting all the images in the "Memory Stick"
Sek,ct RETURN in step 5, then press the SEL/PUSH EXEC.
While DELETINGappears
Do not turn the, POWER switch or press any buttons.
If the write-protect tab on the "Memory Stick" is set to LOCK
You cannot delete images.
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