64gb SD card has mysterious 1gb used after formatting

rhcpepper

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Oct 14, 2013
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10,510
I have a 64gb Transcend SDXC that I bought for use with my Open Pandora handheld. I soon discovered it was exFAT (only after loading it up with music and apps) and this is some proprietary file system not supported by Linux, so I figured I would format it to ext2.
I first tried this on my Win7 PC using the program MiniTool Partition Wizard. After the process completed I was shocked to see that my card had a max capacity of only ~55gb! Where did the other 5gb go? It was ~60gb originally. I put it in my Pandora anyways, thinking maybe Windows just had trouble with the ext2 file system. It too showed a max capacity of ~55gb.
Ugh, I reformatted only this time decided to use the tool Gparted since I can run it right on the Pandora. Formatting was successful, but both Linux and Windows show the max capacity to be ~60gb (what it should be) and that there is 1gb being used, so only 59 available. Is there something I am missing? What is this mysterious gigabyte being used for? :??:
Help is appreciated.
 

Mattios

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I have no experience with those file systems, but for most file systems you don't get all the advertised space available for use because they work with different values for kilobytes, megabytes etc.

You're not missing out on any space - you have the most that you will get now. http://www.howtogeek.com/123268/windows-hard-drive-wrong-capacity/
 

rhcpepper

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Oct 14, 2013
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10,510
Thank you for the reply, Mattios. I am well aware of what you are talking about, but I think you are misunderstanding my problem. For instance, my 32gb SanDisk has a max capacity of 29.7, this is how it was out of the box. My 64gb Transcend similarly had a max capacity of 59.8gb out of the box, but then I ran into issues after formatting to ext2. First it showed the max capacity to be 55gb, then after formatting with GParted it says the correct max capacity of 59.8. The only problem is there is 1gb being used... by nothing! 58.8gb free of 59.8gb is what my computer shows.

Here is my 2 SD cards. There is nothing on MUSIC since it was freshly formatted, yet there's a gig being used.
rL684XS.png