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Thread: Palm and SD Card

  1. #1

    Default Palm and SD Card

    bought a SanDisk 128mb SDcard yesterday and when I slotted it into my Palm Zire 71, it only showed 120mb available....is this normal?

  2. #2
    Senior Member ivor's Avatar
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    absolutely normal... My 64MB only shown 59.4MB...

  3. #3

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    yah, i'd think its normal if it showed 127 or even 126mb, but 120mb?

  4. #4
    Senior Member ivor's Avatar
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    I really don't how to explain to you... but maybe the below URL might help...

    Memory Capacity

    http://kb.palm.com/SRVS/CGI-BIN/WEBCGI.EXE/,/?St=10,E=0000000000310908170,K=9567,Sxi=3,Case=obj (8711)


    <<QUOTE>>


    When formatting an Secure Digital (SD) expansion card for use with Palm™ handhelds, the actual space left on the card after formatting is less than the "published" capacity.

    This is due to the overhead involved in the formatting process, including file allocation tables, encryption, volume names, etc.

    This is the same process that occurs when you format a hard drive or floppy disk (a 1.44 MB Floppy is really 2 megabytes with only 1.44 available for use after formatting!).

    Typically, a "16 MB Palm™ Expansion Card" has 14 Mega Bytes of available memory after formatting.

    <<UNQUOTE>>

    Read Here too...
    Last edited by ivor; 26th June 2003 at 11:42 AM.

  5. #5

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    thanks ivor! i dun feel so bad now....hehehehe!

  6. #6

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    cannot be 120mb, i also using sandisk with tungsten t. it shows 127mb

  7. #7

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    now u getting me worried again, i thot posts from spug.net indicate that 95% of stated capacity is normal?

  8. #8
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    For your info, my 256MB Sandisk on my Zire 71 shows 241.1MB.

  9. #9
    Senior Member ivor's Avatar
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    128MB = 120MB available
    256MB = 240MB available

    Do you see the relation...??

    Also Zire 71 is Zire 71, while m550 is m550...

    GitS - I suggest that you check with someone with the similiar palm model and SD card as yours and do comparsion...
    Last edited by ivor; 27th June 2003 at 05:07 PM.

  10. #10

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    thanks guys!

  11. #11
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    explanation is not exactly right.

    manufacturers quote mega bytes as in exactly 1 million bytes.

    but in the computer world 1 megabyte is 1024x1024 or 1,048,576 bytes.

    so, manufacturer quoted 64MB ~ 61MB actual storage (around 4.9% less).

    There're some overheads too and the actual size available for use is even lesser.
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