chmod can not change permission

[lovelylinux]

Hello to all,

First I would like to mount usb pen drive to /mnt/usb.

For that I use the command like "mount /dev/sda1 /mnt/usb"

It gives the permission like
"drwxr-xr-x 10 root root 16384 Jan 1 1970 /mnt/usb"

But I want that no user other than root user can use it.

for that I use comman like "chmod 0700 /mnt/usb"

But It gives error like
"chmod: changing permissions of `/mnt/usb/' (requested: 0700, actual: 0755): Operation not permitted"

I have done all these procedures as root user.

I have problem like this in Redhat 9 and RHEL3.

So what should be solution of my problem ?

Please help me if possible.

Any good reply is apprecialble.

Thanking You in advance.

[Agent-X]

Are you root when you use chmod?

[birdman]

I think you need to set the umask to 077 when you mount

Use this link:
mount()

I am assuming your USB drive is using the FAT filesystem so if you search for "Mount options for fat" at that link it should answer your question.

[lovelylinux]

I think you need to set the umask to 077 when you mount

Use this link:
mount()

I am assuming your USB drive is using the FAT filesystem so if you search for "Mount options for fat" at that link it should answer your question.

Thank you very much.
My problem is solved.
Now I can mount my usb pendrive without any problem.
Thanks to every one who answer me.