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Forum > Sony Ericsson / Sony > Accessories > Sandisk 8GB - only 4GB visible!

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Author Sandisk 8GB - only 4GB visible!
norbi_nw
Samsung Galaxy S II
Joined: Nov 27, 2006
Posts: > 500
From: Romania, Timisoara
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Posted: 2008-01-08 13:37
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well put some BIG files in other, on memory stick. try to put 7,5GB in other folder.
johnrm
W995 Black
Joined: Nov 02, 2007
Posts: 24
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Posted: 2008-01-16 16:01
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I did that, and no problems.

][nquisitor
K850 Blue
Joined: Jan 19, 2008
Posts: 19
From: Greece
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Posted: 2008-01-27 17:08
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You two are K850 users, i bet that K850 does reckognise them doesnt it?
SE says, that K850 supports up to 32 GB sticks !
There is no such a thing as innocence, only degrees of guilt
altemyr
X1 Silver
Joined: Jan 21, 2002
Posts: > 500
From: Stockholm, Sweden
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Posted: 2008-01-28 10:32
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I have been using a 4GB Sandisk M2 on my K800i since before cristmas last year, and mostly, there are no problems, but I have noticed a few odd things with the phone that has never occurred before, and it may be related to the memory stick:

  • Once, I lost all my email settings, and the saved emails in each account folder (See this post).
  • Sometimes, when I have watched a movie or displayed an animated GIF file, some elements in the theme are corrupted and I have to re-apply the theme in order to restore the images.
  • I sometimes use the phone for listening to audio books. Sometimes, when I unpause the player after a pause, it does not start from where it was paused, but several minutes before or after that position. The keyboard has been locked at these occasions, so it cannot be caused by accidental touches of the keyboard.
  • When connecting the phone to the computer using the USB cable, the phone drives do not always come up visible in the computer. In these cases, I have to unplug the USB, wait for the phone to reboot, and re-connect. Most of the times, the drives do come up then.


I know that the K800i model nowadays is considered a bit old, and according to its whitepaper it only supports 2GB memory sticks. But according to the whitepapers of newer models, those models only support 1GB cards, and still, both 2GB's and 4GB's are reported to function.
altemyr
X1 Silver
Joined: Jan 21, 2002
Posts: > 500
From: Stockholm, Sweden
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Posted: 2008-01-28 10:46
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On 2007-12-31 01:14:31, Mizzle wrote:
I can't remember if it'll make use of the first 4 gigabytes and then show memory status for the remaining 4 gigabytes, or how it's done. And as far as I remember there's something about the file system changing when cards get to 4 gigabytes... to FAT32, I think.



I think it is merely a numeric overflow bug in the memory space counter. 1 GB is represented as 40000000 in hexadecimal, 1000000000000000000000000000000 binary, ie using 31 bits. The 32nd bit is normally used as a sign (+/-) indicator, but can be used if the variable is declared as an unsigned integer. In that case, the biggest possible value that can be represented with the integer is FFFFFFFF hex, i.e 4GB - 1. If the software that calculates the memory size does not use double precision integers (64 bit representation), the counter will restart at 0 when it passes 4GB. Consequently, if you fill your big M2 more than half, the counter will show the correct value of free memory.
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