Preparing Recording Media
•If a CF card becomes full during double slot recording, recording on both cards will stop. On the other hand, if an error occurs with one of the cards, recording will continue on the other card.
•Double slot recording cannot be used with relay recording or slow & fast motion recording.
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Checking the Available Recording Time for CF Cards
When the camera is in 
mode, the display on the upper left of the screen indicates which CF card slot is in use and the available recording time (in minutes*) that remains on each CF card. The same information is
displayed in the rear panel. When the camera is in 
mode, the available recording time is displayed only in the rear panel.
On the [Media] status screen (A180), you can check the available recording time, total space and used space of each recording media, and the available number of photos.
* The approximate available recording time is based on the current bit rate (A62).
Recovering Data on the CF Card
Some actions, such as suddenly turning off the camera or removing the CF card while data is being recorded, can cause data errors on the CF card. In such case, you may be able to recover the data on the CF card.
Operating modes: 
1 Insert the CF card with the data to be recovered into the camera.
2 When the screen prompts you to recover the data, select [Yes] and then press SET. 3 When the confirmation message appears, press SET.
NOTES
•This procedure will delete clips shorter than 10 seconds in length. Additionally, up to 10 seconds will be deleted from the end of clips on the CF card.
•In some cases, data may not be recovered, such as when the FAT32 file system is corrupted or the CF card is physically damaged.
•While recording on a CF card, you can recover data from another CF card by inserting it into the other CF card slot.