Lubuntu 12.04, 64 bit: Moving files from full hd to another, but available bytes are always "zero".

Asked by LXCC

Some days ago i fulled my hd, then now i'm tring to move files to another hd.

~# df
File system 1K-blocchi Usati Disponib. Uso% Montato su
/dev/sda3 166302644 158807992 0 100% /media/HOME

~# mv /media/HOME/mydir/* /media/Ubuntu1204-64/mydir/

~# df
File system 1K-blocchi Usati Disponib. Uso% Montato su
/dev/sda3 166302644 158665632 0 100% /media/HOME

Total : 166302644

Used:
before 158807992
after 158665632

Available:
before 0 (but must be 7494652)
after 0 (but must be 7637012)

I tried with Nautilus, it's same.
Only Gparted show the correct value of freespace on hd.

what happend?
How to fix ?

$uname -a
Linux user-desktop 3.2.0-40-generic #64-Ubuntu SMP Mon Mar 25 21:22:10 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Lubuntu 12.04 64 bit

Thanks.

Question information

Language:
English Edit question
Status:
Solved
For:
Ubuntu Edit question
Assignee:
No assignee Edit question
Solved by:
LXCC
Solved:
Last query:
Last reply:
Revision history for this message
actionparsnip (andrew-woodhead666) said :
#1

What is the output of :

lsb_release -a; df -h; df -i

Thanks

Revision history for this message
LXCC (lxcc-it-gg) said :
#2

Ok i solved.
Someone told me about 5% of hd space is reseved for root operations.
It means, there is free space but not show it to user.

In fact, moving more files, i can see free space but the amount showed is reduced of 5%.
That's all.
Thanks

~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.2 LTS
Release: 12.04
Codename: precise