Someone can help ?
I did a "df" as I was getting a error of -50 on my Mac connected via 
Netatalk 1.4.1 when I tried to copy a folder. 
I got
linux# df
Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
/dev/sd1a      193143   164815     9013    94%    /
/dev/sd1g     1029719   297426   629321    32%    /home
/dev/sd2a     1938060   980113   764141    56%    /pub
/dev/sd2b     2907090  2737512  -121131   104%    /disk1
/dev/sd2d     3876120  2907104   581404    83%    /disk2
/dev/sd2e     4845150  3876131   484504    88%    /disk3
/dev/sd2f     5814180  5228836     3926    99%    /disk4
/dev/sd2g      969030   224367   647760    25%    /disk5
/dev/sd2h     6783210  5953231   151658    97%    /disk6
kernfs              1        1        0   100%    /kern
procfs              4        4        0   100%    /proc

As you can see, I've formated 8GB hard disk into 7 partitions, but it 
doesn't dislplay a correct number of blocks and I found sd2b showing 
minus availablity !

What is happening here and how can I correct these problem ?

San