RE: ResMed AirSense 10--SD data card?
I ended up buying a new card since I wasn't positive I could wipe all the files off my old card. I just popped the new card in and a message (that I didn't read) briefly appeared on the screen before it disappeared and the home screen returned. My guess is that all is well and I don't need to take any computer science courses for now, but tomorrow I'll try to download tonight's data on SleepyHead to confirm. Thanks again for everyone's insights!