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Why Does A 2g Sd Card Only Allow 1.39g Of Storage?

Storage Discussion

Why Does A 2g Sd Card Only Allow 1.39g Of Storage?

Postby Avrum » Mon Oct 16, 2017 7:13 pm

Not only that, but when I have absolutely nothing on it, my computer says it only has 1.39/1.87g available. I would understand if the missing .13g was all it took for whatever it takes to make it run properly. I just don't understand why it would not only show as 1.87, but also take away .48 on top of that. Wouldn't it make more sense to show the available memory as either 2g or 1.39g in the first place?
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Why Does A 2g Sd Card Only Allow 1.39g Of Storage?

Postby Braddford » Mon Oct 16, 2017 10:11 pm

Mostly of SD cards shows that have (for example) 4GB but when you put in ur PC it shows 3.75

that happens to me same.
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Why Does A 2g Sd Card Only Allow 1.39g Of Storage?

Postby aubin » Tue Oct 17, 2017 9:58 pm

you never get the complete amount of capacity on any storage system. You need space for internal objects like inodes, superblocks, filesystem tables etc
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Why Does A 2g Sd Card Only Allow 1.39g Of Storage?

Postby MacLaine » Wed Oct 18, 2017 9:51 am

1, retail bytes are by 1000. computer bytes are 1024. so a 2 GB SD card means 2 billion bytes, not 2147483648, therefore the actual capacity is less.


2, formatting, special functions partition may remove more storage

3, damage to card will reduce capacity

4, device limitations will reduce capacity.
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