1. gariac's Avatar
    I want to store large files on a SDHC card, that is, beyond the FAT limit. I formatted a 32gbyte card with exfat. My z10 then downloaded a driver when the card was inserted. So far so good.

    The phone indicates there is a problem with the card. If I format it, it goes back to fat32, but otherwise works.

    As an experiment, I copied all the stuff bb10 puts on a fresh card on to my windows PC. Basically a few directories and some crypto file. I then formatted the card to Exfat, then loaded the basic bb10 files I had copied. Put it in the phone and again, the phone insists there is a problem and it must format the card. Yeah, back to fat32.

    I suspect bb10 will only use Exfat on a large card (64g on up). Has anyone ever got Exfat to work on a 32gbyte card?

    Posted via CB10
    09-11-15 04:53 PM
  2. DaFoxGrey's Avatar
    Which OS are you running?
    Some of the leaked/beta OS's have problems loading the correct exFAT drivers.
    09-11-15 07:58 PM
  3. gariac's Avatar
    10.3.2.556 software release
    10.3.2.858 OS
    859 radio
    Granted not the latest and greatest, but it isn't a leak.

    Posted via CB10
    09-11-15 08:35 PM
  4. jope28's Avatar
    Exfat driver downloaded fine 10.3.2.2639 and working well on my 64GB Sony card.
    I used PC to format card.
    Copied over a 13GB file with no issues.


    Attachment 370923

     Frosty White Q10/10.3.2.2639 CB10 
    09-11-15 10:22 PM
  5. gariac's Avatar
    Exfat driver downloaded fine 10.3.2.2639 and working well on my 64GB Sony card.
    I used PC to format card.
    Copied over a 13GB file with no issues.


    Attachment 370923

     Frosty White Q10/10.3.2.2639 CB10 
    Any chance you have an old 32g sdhc you can experiment on to see if bb10 liked exfat on them.

    I have so many 32g cards handy. (I like to hack on arm SBCs.)

    I suspect if the phone sees 32g cards, it forced fat32.


    Posted via CB10
    09-11-15 11:42 PM
  6. jope28's Avatar
    Any chance you have an old 32g sdhc you can experiment on to see if bb10 liked exfat on them.

    I have so many 32g cards handy. (I like to hack on arm SBCs.)

    I suspect if the phone sees 32g cards, it forced fat32.


    Posted via CB10
    I don't have a 32GB card, but I'd imagine it would work just as well.


     Frosty White Q10/10.3.2.2639 CB10 
    09-14-15 08:46 AM
  7. DaFoxGrey's Avatar
    Use the freeware program Rufus to format the SD card on a computer to exFAT.
    https://rufus.akeo.ie/
    09-14-15 09:08 AM
  8. kbz1960's Avatar
    I don't think it's good to format anything 32gb or smaller as exfat.
    09-14-15 09:39 AM
  9. DaFoxGrey's Avatar
    I don't think it's good to format anything 32gb or smaller as exfat.
    It does no harm to the card or device and does provide the added benefits of increased max file size and file count.

    Normally the only reason one would need to format a 32GB+ card with exFAT is that native Windows can't format a card that is higher than 32GB in FAT32. In order to format a large card in FAT32, you need a third party formatting program. I use Rufus, linked above.
    The pluses of FAT32 is that older PC OS's and stock BlackBerry devices can read and write to FAT32 formatted cards in any hardware supported size. The downside is FAT32 max limits on single file size and maximum number of files.

    For exFAT, the pluses are most all current PC OS's can read and write to a exFAT formatted card. The max file size and number of file is very greatly increased. The downside is that all current BlackBerry devices can't see or read/write to an exFAT card, unless it can download and load the correct exFAT drivers that work with the BB OS that is installed.
    Further, some of the official drivers are bugged and wont allow a computer to access the SD card unless the BlackBerry is in USB Mass Storage Mode. To add, some leaked/beta OS's can't download or have trouble installing the correct exFAT drivers.

    So, if one does wish to format a small SD card in exFAT and use it in there BB10 device running an official release OS, generally they won't have any issues. Same for a large SD card.
    If one wants to use a SD card in their BB10 device, no matter what the size, and they, like me, tend to try out different BB10 OS's, then having it formatted in FAT32 will provide no issues with SD functionality.

    Personally, I run a 128GB SD in my Z30 and have it formatted in FAT32 via Rufus. At this time, I have no need for a max file size over FAT32 limits, nor am I close to the max file count. As I do play with leaked/beta OS's and even do some hybrid tweaks, I constantly run into issues getting the exFAT driver that works right. So, FAT32 provides me with much less headache.
    09-14-15 07:52 PM
  10. kbz1960's Avatar
    Exfat is made for cards larger than 32 gb. While possible I seems to cause compatibility issues and issues with card. But go ahead.
    09-14-15 08:06 PM
  11. gariac's Avatar
    Exfat is made for cards larger than 32 gb. While possible I seems to cause compatibility issues and issues with card. But go ahead.
    Well I pretty much proved that bb10 will format Exfat back to fat32 on a small card since nobody else has stated that works.

    I don't understand the 3rd party formatter since win 7 can format exfat. Linux can as well if you add some software.

    I bought a 64g card thanks to a Fry's sale ($19) and will test it soon.

    Posted via CB10
    09-15-15 01:17 AM
  12. kbz1960's Avatar
    Win7 can do it, but I think it won't anything less than 64 gb
    09-15-15 09:00 AM
  13. gariac's Avatar
    Win7 can do it, but I think it won't anything less than 64 gb
    I could format the 32G card to Exfat on win 7 and it worked fine in the PC. I also formatted it in Linux, though linux is kind of clumsy with exfat.



    Posted via CB10
    09-16-15 01:34 AM
  14. gariac's Avatar
    Here is my follow up:
    1) I believe that bb10 will not accept a 32gbyte card with exfat format.
    2) Loading a 64gbyte card causes the exfat driver to be loaded
    3) The 4gbyte per file limit of fat32 is not a problem with Exfat. However the browser will not download a file larger than 4gbytes.

    Elaborating on item 3, I tried to download a linux disty that is 4.4g. Yeah, I can do that on a wired line, but I thought it would just try it on the phone just to see what would happen. Maybe the browser assumes fat32 on the card.

    Posted via CB10
    09-21-15 08:52 PM

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