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OSCAR can't find data on SD card
#1
OSCAR can't find data on SD card
This problem started after 2 days ago after my RESMED Airsense 10 supplier (a local pharmacy) took out the SD card to read it in her app and then put it back in.  It was unpowered at the time and when I got home and put everything back together all seemed normal with AHI numbers being reported as usual the next day. However OSCAR now says there is no data to report.  But the data seems to be there as my RESMED machine can see it and the file count and storage amount is similar to other days it is just that OSCAR can't see it. So what has happened?  Assistance appreciated.

Thank you.

Bruce
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#2
RE: OSCAR can't find data on SD card
Check to see if your DME write-protected (locked) the card.  It's the little tab on the side of the card.
[Image: SD_memory-lock.jpg]

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Crimson Nape
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#3
RE: OSCAR can't find data on SD card
Thanks but the card is not locked that was the first thing I checked.

Bruce
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#4
RE: OSCAR can't find data on SD card
Well no further help with this issue so I assume it is something highly unusual , possibly something I have screwed up although I can't imagine how or could the data have been encrypted after being loaded into ResMed's proprietary system by the helpful lady at my local pharmacy?  

Anyway I have solved the problem by simply getting another pristine SD card and low and behold OSCAR can read last nights data just fine and I still have my historical data.

Bruce
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#5
RE: OSCAR can't find data on SD card
Hi Bruce,

Welcome to the forum.

Fortunately you are not long into therapy and so there were no gaps in the summary data.

Sounds like this all happened within a day or less, so there is also no gap in session detail data either.

The AS10 retains daily summary data in its memory for about 60-90 days (I forget which), however it does not retain any detail session data.  
  • When you insert a new SD card, I believe the AS10 will write the stored summary data to the SD Card.
  • Then during operation it will write the detailed data for each session to the SD card (even though it does not retain it in AS10 memory)
  • That's why if you ever forget to reinsert the SD card and remember a few days later, you will notice no gap in the summary data, but you won't find detailed session data in OSCAR for the days the card was out of the machine. 

 In this case the session detail data that is not on the new SD card had already been imported into OSCAR from the old card, so OSCAR is not missing any data.

The 'corruption' of the SD card might have been caused not by you but by the pharmacy tech inserting an unlocked SD card into her computer.  
  • Some computer OSes will put a control file on removable media and that can cause issues for other machines trying to read the data. 
  • It might be interesting since you switched to a new SD card to mount both cards on your OSCAR computer and look for differences.  
  • It is likely you will find something was added to the old SD card which you can probably delete and it will work again.  
For the future... it would be helpful to develop the habit of any time you remove the SD card from the AS10, write lock it before you step away from the machine.  And the last thing you do before reinserting into the AS10 is to unlock it.  Strive to make that a 'muscle memory' kind of thing and you won't go wrong. Nobody except the AS10 ever needs to write to the SD card. 
  • If the SD card is always write locked when away from the AS10, you won't accidentally insert it unlocked into your computer, nor hand it to any DME or doctor office unlocked.   They might not be as diligent as we patients are about locking an SD card that is handed to them.  
  • Good habits on your part will protect your data from yourself and others who handle the SD card away from your AS10.

Saldus Miegas
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#6
RE: OSCAR can't find data on SD card
>>>AS10 retains daily summary data in its memory for about 60-90 days (I forget which)

It's 365 days, to be exact
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#7
RE: OSCAR can't find data on SD card
(11-19-2022, 04:26 PM)pholynyk Wrote: >>>AS10 retains daily summary data in its memory for about 60-90 days (I forget which)

It's 365 days, to be exact

oops ... what he said. 

thanks pholynyk.

Saldus Miegas
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#8
RE: OSCAR can't find data on SD card
Thanks that is very helpful.

Bruce
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#9
RE: OSCAR can't find data on SD card
I thought it was only the s9 that required you to change from lock to unlocked and the airsense 10 model you didn’t have to do that.  
The other day I was importing my data and for some reason there was one particular day that it says no data available.  The sd card was in the machine but for some reason that one day no data was recorded.  
Does anyone know how to get this data to import? If you don’t have the sd card in then you at least get summary data, but it’s as if I didn’t use my machine that particular day which in my case is  incorrect.  
Thanks in advance for any feedback.
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#10
RE: OSCAR can't find data on SD card
I would appreciate if anyone can help me with this problem to retrieve my lost data from one day.  
Thanks
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