1. stackberry369's Avatar
    I just brought an 8 gb card,after formatting I only have 7.3 gb.why???

    Posted from my CrackBerry at wapforums.crackberry.com
    01-18-11 01:13 AM
  2. valhalla1759's Avatar
    Memory cards and hard disk drives al do this. Nothing to worry about.

    There is a far more detailed explanation but all you need to know is nothing is wrong with your card or phone.

    Posted from my CrackBerry at wapforums.crackberry.com
    01-18-11 01:24 AM
  3. stackberry369's Avatar
    Why don't they just say 7.3 on the package?lol

    Posted from my CrackBerry at wapforums.crackberry.com
    01-18-11 01:29 AM
  4. valhalla1759's Avatar
    Because 8 sounds better

    I wish I could find the damn chart online illustrating it, makes it simple to understand but Im not having any luck.


    But like I said all is well, you got nothing to worry about.

    Posted from my CrackBerry at wapforums.crackberry.com
    01-18-11 01:35 AM
  5. dictoresno's Avatar
    an incorrect 8,000,000,000 bytes of data available for storage divided by 1024 bytes 3 times approx 7.4 GB of actual space. to get the true 8 GB full use of the card, as it claims to be, it would have to be an 8.58 GB (8,589,934,592 byte) card. that would then yield you the full 8GB. its all because a the binary approximation of 1 GB isnt exactly 1000 MB, its 1024.

    i think thats correct.....its all about math.....


    they sell memory based on what we are used to, easy decimal numbers that are well rounded approximations versus their binary counterpart.
    Last edited by dictoresno; 01-18-11 at 01:48 AM.
    01-18-11 01:38 AM
  6. bestbundledeal's Avatar
    i also want some information about this
    01-18-11 01:58 AM
  7. Cleveland's Avatar
    Yes that's exactly what it is... I don't know why they just say it's 7.4 lol
    01-18-11 02:14 AM
  8. Evan_O's Avatar
    FRAUD! I'm calling my attorney!

    Posted from my CrackBerry at wapforums.crackberry.com
    01-18-11 02:22 AM
  9. dictoresno's Avatar
    Yes that's exactly what it is... I don't know why they just say it's 7.4 lol
    because technically its a card that holds 8,000,000,000 bytes in decimal. thats easier for people to understand and easier to sell. when formatted in to binary, because of the 24 byte per MB difference, it comes out less.
    01-18-11 03:49 AM
  10. Pete6's Avatar
    The math is correct. A megabyte on a compter (and a Blackberry) is counted as 1024 bytes (characters). They go 2, 4, 8, 16, 32, 64, 128, 256, 512 and 1024. This is done so that when the disk is formatted it is easy for the OS to do quick math and find stuff (greatly simplyfied, here).

    Manufacturers often just count their bytes as 1,2,3,4,5,6,7,8,9,10 and so on. This is fair enough because they make memory byte by bye and not two by two. Right here is where the confusion emerges when sizing memory cards and, for that matter, harddisks.

    The BlackBerry also steals some space on the Media Card for its own use. It puts a little bit of its own stuff there and this reduces your usable space.

    Lastly the simple establishment of the folder structure takes a little bit of space in the same way that the internal volume of a cupboard is slightly reduced my the fitting of internal shelves. Of course having the shelves (folders) makes finding your stuff in the cupboard a lot easier to find.

    Hope this helps a little bit.
    01-18-11 04:28 AM
  11. BergerKing's Avatar
    I guess theirs is a lil' hungrier. I got 7.5 GB out if my 8 card. Definitely no complaint there.

    Posted from my CrackBerry at wapforums.crackberry.com
    01-18-11 04:51 AM
  12. stackberry369's Avatar
    Bb steals media card. Space?

    Posted from my CrackBerry at wapforums.crackberry.com
    01-18-11 09:46 AM
  13. dictoresno's Avatar
    Bb steals media card. Space?

    Posted from my CrackBerry at wapforums.crackberry.com
    dude really?
    01-18-11 10:11 AM
  14. stackberry369's Avatar
    Don't need to be a smarta$$ dicto.

    Posted from my CrackBerry at wapforums.crackberry.com
    01-18-11 03:56 PM
  15. dictoresno's Avatar
    Don't need to be a smarta$$ dicto.

    Posted from my CrackBerry at wapforums.crackberry.com
    well we gave you your answer, with a true computer science explanation. asking if our BB's are stealing memory just didnt make any sense and made me think you truly didnt understand what we had said.
    01-18-11 05:39 PM
  16. pbflash's Avatar
    Any OS (BB, Linux, Windows, etc) will reserve space on the drive for file allocation tables and other system files. Without this information, the OS would not know where files are located on the disk. On my PC, I have a 320 and a 120 GB HD. The 320 has 298 gb after formatting and the 120 has 111 mb. On my Linux server I have a 1 TB drive and only 898 GB is available after formatting.

    The OS is not 'stealing' space. It is using space to properly index file locations so they can be accessed when needed.
    01-18-11 05:58 PM
  17. dictoresno's Avatar
    Any OS (BB, Linux, Windows, etc) will reserve space on the drive for file allocation tables and other system files. Without this information, the OS would not know where files are located on the disk. On my PC, I have a 320 and a 120 GB HD. The 320 has 298 gb after formatting and the 120 has 111 mb. On my Linux server I have a 1 TB drive and only 898 GB is available after formatting.

    The OS is not 'stealing' space. It is using space to properly index file locations so they can be accessed when needed.
    not to threadjack, but since the OPs question was answered......hows the battery life on the BDHP v5 for you? im still waiting for it to settle in.
    01-19-11 12:42 AM
  18. pkcable's Avatar
    Moved to BB Accessories
    01-19-11 10:02 AM
  19. n8ter#AC's Avatar
    Actually the OP's question wasn't answered until pbflash posted.

    And he's right. It's an 8GB card, but when you format it, the actual usable amount of space is less because of the MFT/FAT and cluster sizes. Most memory cards are FAT32 when formatted, so the cluster sizes are pretty big.

    I'd also like to add that if you plan on putting a lot of files on the memory card FAT32 is known (and proven) to degrade in performance the larger the volume grows (in # files on the volume, not necessarily in cumulative size of the files).
    01-19-11 10:08 AM
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