Hi
I bought a 128mb Secure Digital Card from Expansys but when I put it
into my device the Memory on Storage Card says 118.75mb so
where's 9.25mb gone!!!!!
TIA
Charles
The file allocation table (FAT) eats up the rest.
John
And something about..
Secure Digital - This requires space for the "secureness"
So a Multimedia Card may have given you a few megs back..
Its the old saying.
You just don't get what you pay for anymore!
MmF
Missing 10mb
Thanks for the responses.
9.25mb for the FAT, Jeeeez!
Why don't they build them 138mb, and give me what I've paid for!
Rgds
Charles
Actually the FAT does not eat up that much space, not even close. Here's the other part of the reason: A megabyte and a million bytes are NOT equal!
A kilobyte is 1024 bytes. A megabyte is 1000 of those.
The card and hard drive makers say that THEY measure a megabyte as being 1 million characters even. So your 256MB card can hold 256 million characters or bytes.
The computer and PPC however, measures in real megabytes and take that number, dividing it by 1024, to come up with its reported size. Therefore, your card has 256 million bytes, but not 256 megabytes.
They've redefined the word.
Ahh I see now. Thanks Carlos
Rgds
Charles
Related
Can some one please tell me why when you buy a memory card you never get the amount of memory specified available to you. For example I have a 32MB card but the XDA only shows this as 30.9, a bit of a bummer as I originally bought the card for Rom upgrades but had to use a 64MB instead. Does anyone know why this is the case.
PS I am surprised that there is not a declaimer when buying these. Something like “Though this card is 32MB in size there is no guarantee that the full 32MB will be available to you”
Thanks John.
For each storage media, there is a part taken to keep track of the place and attributes of each stored file. This can range from 1% for simple media like SD and MMC to around 15% for highly protected media like RAID5 storage disks.
As a practic, always subtract 1% of the capacity or you can take the job of keeping this FAT area in your diary :lol:
sd stand for secure digital which mean that each byte have encryption possiblities this also takes up room
with harddisks it's often because they state the size in bytes and not GB or MB or what ever and to get a KB you need 1024 bytes
but i do believe that flashcards do it the more real way by stating the size in MB and GB and such
Yes, 500 megabytes is often not 500x1024 but 500x1000 which also accounts for the disparity.
Just got a TB yesterday and am perplexed on why there is only 29.71 gb of available on a 32 gb card? I guess a few GB...no big deal but the Internal space available is only 2.47 out of 8. What gives? I maybe have 120 phone numbers.
Thanks
http://blog.premiumusb.com/2010/11/usb-flash-drive-actual-storage-space-capacity/
around 29.7 or 29.8GB is right for your SD card. and the internal storage for apps and everything is 2.5GB, some more is used for the system and firmware. I'm not sure if people found out what takes up the rest of the space though.
A 32 GB flash card holds 32,000,000,000 bytes. Your phone is measuring gibibytes (GiB), but incorrectly labeling them as gigabytes (GB).
32 GB = 29.802322387695312 GiB. The difference between that and the available capacity shown is due to formatting overhead, and whatever's already stored on the card.
One gigabyte is 10^9 bytes (SI), whereas one gibibyte is 2^30 bytes (binary). And the ***** of it is that the larger the number of GB to GiB, the more you seem to be "missing."
Thats cool. Thx. Big learning curve coming from a WOS 6.5 to this android. but I will love it.
ddemara said:
Thats cool. Thx. Big learning curve coming from a WOS 6.5 to this android. but I will love it.
Click to expand...
Click to collapse
It's the same for everything. Unless you mean Android as a whole. Anyway, welcome to Android. You'll love it.
I have a 16gb card with a 1gb partition and my phone is telling me I have 13.77 available. If 1gb is 1024 MB then where is the rest of my storage at?
Sent from within my pocket.
The manufacturer uses a conversion factor of 1 mb = 1000 kb (and same for GBs) while manufacturing the card and the computer/phone uses the factor 1024 to calculate the size. Thus it seems that you lose storage. This happens in all storage devices.
Sent from my LG-P500 using XDA App
mihir287 said:
The manufacturer uses a conversion factor of 1 mb = 1000 kb (and same for GBs) while manufacturing the card and the computer/phone uses the factor 1024 to calculate the size. Thus it seems that you lose storage. This happens in all storage devices.
Sent from my LG-P500 using XDA App
Click to expand...
Click to collapse
OK, Thanks. I did the math using 1024MB=1GB / 16GB=15.62GB and I'm still coming up almost 500MB short but, I guess that's used for formatting or something.
I know, I must be missing something. Any Dev ,
Please can you explain
Some memory is simpy reserved.
Much like on the S5 depending on firmware you could have anything from 1.67gb to 1.83gb showing despite having 2gb.
I posted this elsewhere but basically some portion of the total RAM is reserved and mapped to your GPU since if doesn't have its own ram. Happens on regular PCs and Macs too. The ram is mapped so essentially apps can write to that reserved space and the GPU can read it and process. I wonder when we'll get GPUs with dedicated RAM? That's going to be awesome.
Why my 2TB hard disk shows only 1.8TB?
kakit526 said:
Why my 2TB hard disk shows only 1.8TB?
Click to expand...
Click to collapse
No, that is why a kilobyte normaly is 1024 bytes but hard disk manufacturers at a very early stage in PC history silent agreed on 1 kilobyte being equal to 1000 bytes.
My question is about the user available internal storage. According ot GSMArena the device has 4GB of internal storage, but I see only 1.78GB available. Why is this so? I'm new to the whole smartphone/android thing and I don't know if the other ~2.2GB are some system reserve or something like that.
shhnedo said:
My question is about the user available internal storage. According ot GSMArena the device has 4GB of internal storage, but I see only 1.78GB available. Why is this so? I'm new to the whole smartphone/android thing and I don't know if the other ~2.2GB are some system reserve or something like that.
Click to expand...
Click to collapse
Most of the internal storage is occupied by the ROM itself and by the then by installed applications. Now LG, being a company that develops the stock ROMs for its devices on top of Android, sadly produces ROMs that are pretty bloated in terms of unnecessary services and applications, something that has a huge effect of on the consumed space of internal storage. If you buy your device from a cellular operator, you will often get some additional bloatware from your operator as well. Only solution is to use a custom ROM like CM 10.2, which consumes much less resources comparing to the stock one. However, as it's still Android, it will consume considerable internal storage space.
I think you didn't fully understand my question.
Internal 4 GB, 768 MB RAM
This is from gsmarena. Now, how exactly is it that we only have 1.7 GB of internal storage and 588MB of RAM available to us?
shhnedo said:
I think you didn't fully understand my question.
Internal 4 GB, 768 MB RAM
This is from gsmarena. Now, how exactly is it that we only have 1.7 GB of internal storage and 588MB of RAM available to us?
Click to expand...
Click to collapse
its what digdis said.2 of 4 gb are occupied by the system partition.and when every manufacturer says 4 gb,its never exactly 4gb.its about 3.6.just like the pc hard disk.if you have for example 320gb hard disk,the actual size is about 298gb.
the same for the ram.if you have a 2gb ram phone,it actually has about 1.7gb.
our phone with stock rom has 619 mb ram.cm 10.2 has 588.i dont know why exactly(neutrondev knows),but i think it has to do with allocation.
manosper said:
just like the pc hard disk.if you have for example 320gb hard disk,the actual size is about 298gb.
the same for the ram.if you have a 2gb ram phone,it actually has about 1.7gb.
Click to expand...
Click to collapse
I disagree on the hard disk statement. Hard disk driver are simply made with a rounded capacity. 320 gigabytes of hard disk space is 320 000 000 000 bytes, which is normally incorrect since 320 gigabytes = 343597383680 bytes.
343 597 383 680 bytes / 1024 = 335 544 320 kilobytes
335 544 320 kilobytes / 1024 = 327 680 megabytes
327 680 megabytes / 1024 = 320 gigabytes
Manufacturers make hard disks by the following formula:
320 000 000 000 bytes / 1024 = 312 500 000 kilobytes
312 500 000 kilobytes / 1024 = 305 175,78125 megabytes
305 175,78125 megabytes / 1024 = 298,0232238769531 gigabytes
There is no locked/hidden space on hard disks, because there's nothing to lock/hide(if you apply the actual correct calculations). The only exception to this are hidden partitions on the hard drive used for recovery, but people who actually understand computers never use hidden partitions on the hard drive for recovering data, but rather use software to make an image of the system and store it on external storage(external HDDs, flash drives, cloud, etc).
The case with P710(and a number of other devices), I think, is much different, since I don't actually see these "hidden" or "missing" ~2.2 GB anywhere(or if we apply the correct calculations - ~2GB).
RAM memory is always manufactured with the correct calculations. 512MB is real 512MB. 1GB is real 1024MB. With that said, out of 768MB of ram on our device we only see 588MB. So my questions are:
"Where are the other roughly 2GB of storage? Are they used for pure system purposes and are made unaccessable by manufacturers or Android developers?" and "Where are the other roughly 180MB of RAM? Are they also used for addressing hardware or system purposes and are made unaccessable by manufacturers or Android developers?"
[SOLVED]
I found the answers I was looking for. The "invisible" space from storage is taken up by the OS.
This can be locked.