Suppose you have the device mounted on, say, /mnt/test. If you issue "chmod a+rwxt /mnt/test, you should get the desidered result. In fact, this way you say that /mnt/test is "sticky", i.e. everybody can write on it. The line below is the output of "ls -l | grep tmp" in my "/". Note the final "t" in the permissions... drwxrwxrwt 16 root root 20480 Dec 23 14:22 tmp It surely works with directories, I guess it should in your situation, maybe with some slight changes. Best regards. Michael wrote: > I can mount a partition (i.e. /dev/hdd) , and let the user read the files. > But how can I make the user (not "root") has the power to put files > into the partition ? > -- Andrea Giuliano, Ph. D. ICCU - Istituto Centrale per il Catalogo Unico Viale Castro Pretorio 105, Rome - ITALY Tel. +39064989509, Fax +39064059302