El problema es que estás montando una partición fat. Ese sistema de archivos no maneja de por sí permisos de usuario. Para ser franco no uso mayormente ese tipo de particiones, talvéz lo resuelvas usando gid junto con umask. Me parece interesante tener información al respecto en nuestro foro, por lo que incluyo parte de lo que se puede encontrar en http://gentoo-wiki.com/HOWTO_Mount_MS_Windows_partitions_(FAT,NTFS)

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[b] uid,gid: mount as (user,group)[/b]

On all three filesystems (MS-DOS, VFAT, NTFS), mount lets you pass the uid and gid options, which let you set the user and group IDs of who the files are chown'd to when the filesystem is mounted.

To find out the values for uid and gid, run id .


$ id larry
uid=1000(larry) gid=100(users)


So if you wanted everything owned as larry:users on /mnt/ntfs, this is what you would use in /etc/fstab:


/dev/hda1 /mnt/ntfs ntfs uid=1000,gid=100 0 0


Without any options, mount will default to user 0 and group 0, or root.

[b]umask: octal file permissions[/b]

You can change permissions using the parameter umask. But be aware that it must be the bitmask of permissions that are not present for the mountpoint. It is an octal number, formed like this:

* character '0': Indicates that this is an octal number, not decimal.
* first digit: owner user permissions
* second digit: owner group permissions
* third digit: world permissions (every other user on the system)

The modes are as follows (the first column is the mode octal number):

M | R W X
-------------
0 | * * *
1 | * * -
2 | * - *
3 | * - -
4 | - * *
5 | - * -
6 | - - *
7 | - - -

Note: These octal number codes are different that the octal number codes used by chmod.

[b]File: /etc/fstab[/b]

For example, if you want everybody to be able to read, write, and execute every file in your /mnt/c, you should specify the mask 0000:


/dev/hda1 /mnt/vfat vfat umask=0000 0 0


If you want only users from group 610 to be able to read, write, and execute:

/dev/hda1 /mnt/vfat vfat gid=610,umask=0707 0 0

If you want only users from group 610 to be able to read, and execute (not write):

/dev/hda1 /mnt/vfat vfat gid=610,umask=0727 0 0

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