Micro SD cards for HD/MAXX HD | Class 10 32GB vs 64GB

Discussion in 'Droid RAZR HD' started by macpro88, Nov 24, 2012.

  1. macpro88

    macpro88 Premium Member Premium Member

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    I think it's the way the 64 is formatted, it's formatted differently than others that apparently Android can't reinforce lol

    Sent from my DROID RAZR HD
     
  2. lovemyram4x4

    lovemyram4x4 Member

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    Neither of the 4.1 ROMs I currently have installed on mine have the file transfer options in storage manager, I'd think that it would work since everything else has. On my OG Razr I'd had issues with it at the times other things were also having issues other wise it also worked. I remember on the GB build that came on the OG Razr 95% of the time I tried to use the camera it wouldn't save to my old 8gb class 4 SD card and at some point the internal storage .

    I've heard of peole having issues with SD cards that were formated on another device & then working fine after formatting them with the device they're in.


    Sent from my DROID RAZR HD using Xparent Red Tapatalk 2
     
  3. jntdroid

    jntdroid DF Super Moderator Premium Member

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    Galaxy S3... copied a couple gigs of music to my sd (16gb of the model we've been discussing), stuck the sd card back in, voila... half of it's corrupted and in the Lost.DIR folder. Whatever... I'm a little pissed right now, lol...

    Maybe it's coincidence, but I've had Android for years, and literally never had these types of problems until I started using these Ultra Sandisk sd's.

    I unmounted in the settings, ejected on my computer, remounted into phone and rebooted. Man I'm frustrated... I have to be up in 3 hours to catch a flight and wanted to listen to my music in flight.

    Not only did it screw up all the music, my TB folder, "graphics" folder (with hundreds of icons), and a couple other smaller / less important directories... all gone. It also screwed up a few subdirectories I had synced with Dropsync - so what happens? Dropsync starts deleting them from my Dropbox, of course. Not a huge deal as I can restore in Dropbox, but still.

    :angry:
     
  4. macpro88

    macpro88 Premium Member Premium Member

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    Dang dude, that sucks... maybe it is the ultra series... that's a bummer, I'll have to keep an eye on mine, maybe the S3 just doesn't like them, so far my SanDisk Ultra 32GB Class 10 is working great in my HD.
     
  5. macpro88

    macpro88 Premium Member Premium Member

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    Ok, so adding more info here:

    The SDXC (not SDHC) cards, which is what the 64GB card is (the 32GB and smaller are SDHC) uses a default file system called exFAT instead of FAT32. exFAT (extended file allocation table) is file system owned by Microsoft, such as NTFS. Android is currently not licensed for it, or somthing along those lines, I don't know or can't find the exact details - but in order to use a technology, you have to license it from its owner. Well that seems to be changing as according to this article MS is doing that with Sharp in Japan, who is the largest mobile phone manufacturer in Japan: Microsoft Signs up Sharp to License ExFAT File System for Android Smartphones | PCWorld

    While FAT32 supports up to 2TB of space, the SDHC format for micro SD cards is 32GB, so anything larger has to be in the SDXC format which are formatted in the exFAT format. Now, get a load of this, ready?

    SDXC supports up to 2TB! Imagine having a microSD card with 2TB of space! WOW!

    Source: Secure Digital - Wikipedia, the free encyclopedia

    In relation to Android, read this interesting article here: Tuxera Drives exFAT and SDXC Adoption on Mobile Devices | Tuxera
     
  6. jp233

    jp233 Member

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    Yeah, I'm wondering if it's related to the SanDisk products period. When I try to return the SanDisk 32GB Class 4 card that just does not work in my OG RAZR, I'm going to get the cheap MicroCenter version instead. They have a CLass 10 32gb card for like $24 so I"ll try that over a SanDisk.

    It will be definitely a great thing if Jelly Bean supports the 64GB cards (and bigger!) if they fix SDXC support and make them 100%. I'd assume Motorola would want to do that prior to releasing JB for OTA updates via Verizon.
     
  7. macpro88

    macpro88 Premium Member Premium Member

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    That's it, I'm done with these class 10 cards, even my 32GB card craps out. Loaded music on it yesterday, wen't to play it, and it quit half way through, all the songs, all of them. Android then reported the card blank, blank! Popped the card in my laptop and everything is still there...

    I'm done, sticking with class 4 cards proven to work on a daily basis...
     
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  8. GoCliffGo05

    GoCliffGo05 DF Super Moderator Staff Member Premium Member

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    Haha that's awful luck man. :(

    Sent from my DROID RAZR HD using Xparent Cyan Tapatalk 2
     
  9. macpro88

    macpro88 Premium Member Premium Member

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    No kidding. So dumb. Done with SanDisk lol

    Sent from my DROID RAZR HD
     
  10. bohemouth

    bohemouth Member

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    I was nervous about buying an sd card online too and radio shack has the 32 gb for 27.00. good luck.
     
  11. lovemyram4x4

    lovemyram4x4 Member

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    I was a bit worried about buying my current scandisk SD card w/ all the refurbished ones that kept coming up whenever I searched to see if any 64gb were on sale.

    I'd rather have gotten another Samsung since they have a good rep for flash memory, but the scandisk was on sale & it's worked fine for me so far.

    Sent from my DROID RAZR HD using Xparent Red Tapatalk 2
     
  12. GoCliffGo05

    GoCliffGo05 DF Super Moderator Staff Member Premium Member

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    Yea the SanDisk 32gig class 4 work flawlessly.

    Sent from my DROID RAZR HD using Xparent Cyan Tapatalk 2
     
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