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Compute the real total size of a partition formated in EXT3

Dear All,


In order to have a real percentage of freespace for a user interface, I’m trying to compute the size available on a 4GB USB key formatted in Ext3. Indeed after format, when I ask df to give a summary of size, it tells that there is 75MB already used.

I would like to know the meaning of this 75MB ( is it the journal??) and especially how I can compute this when I want, whithout parsing the partition and the size of the file(s).

/dev/sda1            3.7G       71.5MB                3.4G 2% /mnt/internal                  


Best regards.


St├ęphane Cerveau
Software Engineer

scerveau awox com

Phone: +33 4 99 53 27 39

93, Pierre Duhem
34000 Montpellier
Phone: +33 4 67 47 10 00
Fax:      +33 4 67 47 10 15



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