I have a 16GB Firebird USB and the actual size on disk is only 14.9GB

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1

Hi all,

When I format my usb disk, all i can get is 14.9GB. Is it normal?

and one more thing. I tried to format it as a chrome OS startup disk and that made a big mess. eventually i managed to return it to one partition. that thing with the chrome os changed the drive’s default settings so i would like to know what is the default allocation unit size (when formating)? i think it was 4096 bytes before i messed with it, now its default 8192. i don’t remember what the default allocation size was so i need a number for an answer.

thanks a lot!

I.K.

2

@idankanfi wrote:

 

When I format my usb disk, all i can get is 14.9GB. Is it normal?

Yes.

3

Even your hard disk, it would show less. let’s say a 500GB will only be shown as 480GB or something. But when you look at BIOS, it will be shown the whole size. PC hardware and Windows actually see a data in different ways. For a hardware, it’s 1KB = 1000 bytes and in Windows, it reads 1KB = 1024 bytes.

4

thanks!

5

thanks

6

thanks

7

i still need help with the default allocation unit size

8

If most of the files you plan on keeping on it are large keep the 8K cluster size.  If most are small use the 4K one.

9

Thanks Ed_P