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billbolton wrote:There is nothing non-standard about the FAT file system written by the S9, so if your computers won't recognise the file system, then you DO have an issue with something installed on your computers.…

Sorry, Bill but you'll have to get in line behind StevenXXXX, who already solved the problem (see above) by advising me as follows:

StevenXXXX wrote:You need the SDFormater software (free) to format SD cards (especially those older 1 GB ones)

http://www.sdcard.org

Now my SD card is recognized right out of the S9 machine.

He gets the prize for most constructive suggestion.

But you can have the prize for the most argumentative, condescending non-answers.

NateS wrote:Sorry, Bill but you'll have to get in line behind StevenXXXX, who already solved the problem (see above)

Again....... there is nothing that needs solving for normal Windows operation. At best its a workaround for something that is not right with your Windows installation.

There is simply no workaround needed for normal Windows operation

NateS wrote:But you can have the prize for the most argumentative, condescending non-answers.

If you insist on doing a King Canute, then that's entirely your choice, but others here need to know that the problem is specific to your installation and in no way common.

billbolton wrote:… others here need to know that the problem is specific to your installation and in no way common.

As I said before, google "Resscan can't see sd card -rescan"

and count the pages of hits.

Nate

I have been using Rescan for 2 years now. I just upgrade Rescan from 3.14.017 to 3.16.018. All seems OK in that it automatically starts when the SD card is inserted in the PC and downloads the data as before.

One "problem" is that if an SD card is not inserted I cannot "open patient file". I could do this with 3.14.017. Does anyone else have this issue?
The location of the patient file is correctly set in Patient Manager.

NateS wrote:

StevenXXXX wrote:

NateS wrote:Conclusion: there is something non-standard about the formatting of the sd card which comes with the S9, and when presented with an SD card, ResScan looks for that formatting.
It may be visible on some Windows machines but not all.

Yours truly, Nate

Yes there is.

You need the SDFormater software (free) to format SD cards (especially those older 1 GB ones)

http://www.sdcard.org

Thanks very much for that information, Steven.

Following your advice, I downloaded and installed SDFormater, re-formatted my spare SD card, re-copied my S9 data to the spare card and voila! - now ResScan sees the data and downloads it from the spare SD card just as it did from my flash drive.

So that gives me another option as to a target to which you copy my S9 data so ResScan can read it.

And I guess that it also provides further support for the notion that the ResMed S9 does not use an industry standard method for formatting its SD cards?

"The SD Formatter was created specifically for memory cards using the SD/SDHC/SDXC standards. It is strongly recommended to use the SD Formatter instead of formatting utilities provided with operating systems that format various types of storage media. Using generic formatting utilities may result in less than optimal performance for your memory cards."

Best regards, Nate

NateS, I wonder if you would see this new post to your old thread... I have just started using an s9 Elite now, so was going through some old threads.

After you had reformatted you spare card with the SDFormatter, was that card usable in s9 (without s9 reformatting it)? And after an overnight use in s9, could your system/Rescan read that card again??

feeling_better wrote: NateS, I wonder if you would see this new post to your old thread... I have just started using an s9 Elite now, so was going through some old threads.

After you had reformatted you spare card with the SDFormatter, was that card usable in s9 (without s9 reformatting it)? And after an overnight use in s9, could your system/Rescan read that card again??

Is there some particular reason you want the card formatted outside of the S9 doing it? The S9 is exceedingly picky about how the data on the card is organized. Resscan not so much. The S9 puts an entry into the directory in an odd place when it formats the card, and if that directory entry isn't there correctly, Resscan won't read the card. It's part of the data integrity scheme of the S9 and Resscan. Also, if you make any kind of a change to a data file on the card, Resscan will not read the files. That's because of the CRC files. No one has cracked the Resmed algorithm that is used to calculate the CRC, not as far as I know anyway. Make a change to a data file and the CRC that Resscan calculates won't agree with the CRC on the card. Resscan then rejects the card entirely.

Well, the reason I asked the q. was to check if formatting outside to solve his problem (the original poster) made it only half compatible (rescan only) or fully compatible. He implied it was fully compatible, but not sure.

As for formatting outside, following your suggestion in another thread, I read through many posts (of over a year ago), and there was a general belief in skewed data (which had strong difference of opinions from others, it is possible Rescan fixed the problem in a later version of the software, a minor version number change) and many people it seemed were formatting the card outside routinely (again not clear for sure). It is hard to look at all the different threads in time parallel, so when you look at a year or two old threads, you do not quite fully understand what was going on, what the final conclusion if any was. As usual, many people when they guess about something usually do not say they are guessing, but talk as if it is their first hand experience

Anyway, I wanted to know if micro sd cards can be used (because it is easier for me to read them on my laptop thru a usb adapter) and how I should format them initially, since they are not resmed made cards.

feeling_better wrote:As for formatting outside, following your suggestion in another thread, I read through many posts (of over a year ago), and there was a general belief in skewed data (which had strong difference of opinions from others, it is possible Rescan fixed the problem in a later version of the software, a minor version number change) and many people it seemed were formatting the card outside routinely (again not clear for sure).

Anyway, I wanted to know if micro sd cards can be used (because it is easier for me to read them on my laptop thru a usb adapter) and how I should format them initially, since they are not resmed made cards.

That's right, reformatting was one of the ways to deal with the skew now that you remind me of it. I'm convinced the data skew is an S9 issue in that the S9 data write routine would start recording the various data files at different times. The start time for the data varies among the files. The start times coincide very tightly with reformatted card. Later iterations of the S9 may have fixed that, I don't know. In any case, the time difference, in what I've looked at, moves up and down between zero and about one minute, and seldom, if ever exceeds one minute. It's most easily seen when comparing the event graph against the flow graph. I think we all pretty much figured it is what is and does not affect the worth of the data in the grand scheme of things, hence we quit obsessing over it.

A micro card may work. I've never tried it. But the S9 and Resscan will accept any standard SD card, at least up to 2GB. Resmed just brands them so they can charge an arm and leg for them. Try the micro card, in an adapter of course. The S9 may just be quite happy with it. As long as you have downloaded the data to your PC you won't lose anything. All the insurance, and most docs, are concerned with is the data that is in the summary data file. The S9 keeps that in machine memory and writes it to the card every time it reformats the card. The DME and doc will always have it available off your machine. If you use the micro successfully I would suggest you download the data and insert a regular SD card into the machine any time you need to take it for the doc to review.

feeling_better wrote:After you had reformatted you spare card with the SDFormatter, was that card usable in s9 (without s9 reformatting it)? And after an overnight use in s9, could your system/Rescan read that card again??

As StevenXXXX, I also regularly use the SDFormater Software to "externally" format my SD Cards (I rotate 2 of them).

You most definitely can use the SD card in your S9 after it has been "externally" formatted with the SDFormatter software. And the S9 will not nor does it need to reformat the SD card again.

And ResScan can always read the SD card after it has been formatted & placed back into the S9.

I would go to the website that StevenXXXX listed in that prior post & read why it is better to use the SDFormatter software to format your SD card instead of formatting it in other ways.

Yes, there are a lot of people who format their SD cards withOUT using this software & they never have any problems.
But, this software works every time, so why mess with perfection.
Plus, it is FREE !

I been using ResScan 3.16 on my Windows 7 Laptop, daily, for almost three years and never had any problems. I use the same SD card, 2 MB, and let the S9 deal with it after I stick it in. I take the SD card out every morning to check my data and I memorise it in the ResScan in the Laptop. In the evening I stick it back into the S9. I am ready to post here the Stats for my last night, my last 6 months, 6 months from a year ago, 5 basic graphs, and slow speed checking for waves flatness, CSRs and PBs. The skews get corrected by the S9 machine on the SD card.

avi123 wrote:I been using ResScan 3.16 on my Windows 7 Laptop, daily, for almost three years and never had any problems. I use the same SD card, 2 MB, and let the S9 deal with it after I stick it in. I take the SD card out every morning to check my data and I memorise it in the ResScan in the Laptop. In the evening I stick it back into the S9. I am ready to post here the Stats for my last night, my last 6 months, 6 months from a year ago, 5 basic graphs, and slow speed checking for waves flatness, CSRs and PBs. The skews get corrected by the S9 machine on the SD card.

I don't see the skew problem because I externally format my SD card once a week when I download that week's information.

However, I have been told by those who do not ever format their SD card that they do have the continuing skew problem.