My Community

this is my POSCAR

Ni - (111)
3.525
.70710678 .0000000 .000000
-0.35355339 0.6123724 .000000
.000000 .000000 5.7735027
10
selective dynamics
Cartesian
0.00000 0.00000 0.0000 F F F
0.00000 0.40825 0.5773 F F F
0.35355 0.20412 1.1547 F F F
0.00000 0.00000 1.7320 F F F
0.00000 0.40825 2.3094 F F F
0.35355 0.20412 2.8867 T T T
0.00000 0.00000 3.4641 T T T
0.00000 0.40825 4.0414 T T T
0.35355 0.20412 4.6188 T T T
0.00000 0.00000 5.1961 T T T

but Vasp give me No initial positions read in. anyone have a suggestion ?

Selective dynamics works only with direct coordinates.
Is there an empty line before your title?
cheers,
alex

noline before my title. Selective dynamics work for both Cartesian and Direct? the poscar below is an exemple from the site. it works well for me
fcc (100) surface
3.53
.50000 .50000 .00000
-.50000 .50000 .00000
.00000 .00000 5.00000
5
Selective Dynamics
Kartesisch
.00000 .00000 .00000 F F F
.00000 .50000 .50000 F F F
.00000 .00000 1.00000 F F F
.00000 .50000 1.50000 T T T
.00000 .00000 2.00000 T T T

There is no visible mistake in your input. The problem is caused probably by "cut&paste" which can introduce some special characters in POSCAR and these interrupt the input stream.

thanks you 2.
opened with p4vasp, save without changing and it works.
probably cut & paste problems

I've also learned my lesson. Thanks! alex