Locking the card before you put it into the computer is to prevent you from accidentally either erasing or removing data from the card. It also prevents extra stuff from being written onto the card.
If you put a locked card into the CPAP, it will say "locked card" or similar.
What zonk was saying is:
- make sure you have imported the data into whatever program you are using
- copy the data off the card into a folder on your desktop
- put the card into the machine. If it wants to reformat the card, let it. It will then rewrite the data from the machine.
However, it will only have the flow data for the previous 7 days, the detail data for the past 30, and then the rest will be compliance hours for the previous 365 days. But since you just imported the data into the software of your computer, all is well and nothing was truly lost. Next time you put the card in your computer, it will recognize it as from the same machine.
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Thank you so much Paula02 and zonk. With your help I am getting to know my new sleep partner better. My original sleep study said I needed a 15. Average pressure on the S9 is less than 11. One apnea per 8 hours. Before CPAP it was 90 per hour. Life is good! Thank you all!
I erased the data, and now my new sleep partner accepts the SD card. Because I didn't lock the card before feeding it to the Mac, the Mac shook hands with the card and they talked and then it was an invalid card. Next time, I will lock the card before I insert and see what happens. Thanks troops!