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Aloha all,

I have just installed Mandrake 9.1 in "high" security mode. This is
important because I didn't have the problem that I am having now when
I had previously installed in "normal" security mode.

The Problem:
As a regular user, I can't access the Win2k partitions on my dual boot
machine. I have no problem accessing them as root. I have tried
changing the permissions (as root) to read access for "user", "group",
and "others". This is the message I get: "chmod: changing permissions
of `/mnt/win_e/': Read-only file system". (I don't know if this is
important but "user" currently has read and executable priviledges.)

I know that win 2k is mountable only as read-only. What I can't
figure out is why I can't change the permissions on it as I was able
to read data from it on a previous install without having to do
anything other than navigating to the directory I wanted.

Any assistance (even humble opinions) would be vastly appreciated.

Tooms (<thumy@hawaii.rr.com>) wrote:

> I have just installed Mandrake 9.1 in "high" security mode. This is
> important because I didn't have the problem that I am having now when
> I had previously installed in "normal" security mode.

As far as I know there is a way to change the security mode after
installation (somewhere in the control center)

> As a regular user, I can't access the Win2k partitions on my dual boot
> machine. I have no problem accessing them as root. I have tried
> changing the permissions (as root) to read access for "user", "group",
> and "others". This is the message I get: "chmod: changing permissions
> of `/mnt/win_e/': Read-only file system".

To set the permissions when the partition is mounted, use the umask and
gid parameter (see the mount man page, Mount options for fat and Mount
options for nfs). Take a look at the parameters in your fstab.

> I know that win 2k is mountable only as read-only. What I can't
> figure out is why I can't change the permissions on it as I was able
> to read data from it on a previous install without having to do
> anything other than navigating to the directory I wanted.

Did you change the filesystem from FAT to NTFS? NTFS write support is
experimental and can cause data loss, so probably this is why your
partition is mounted read-only.

best regards
Andreas Janssen

--
Andreas Janssen
andreas.janssen@bigfoot.com
PGP-Key-ID: 0xDC801674
Registered Linux User #267976

Andreas Janssen <andreas.janssen@bigfoot.com> wrote in message news:<bh7pdi$aq$04$1@news.t-online.com>...
> Tooms (<thumy@hawaii.rr.com>) wrote:
>
> > I have just installed Mandrake 9.1 in "high" security mode. This is
> > important because I didn't have the problem that I am having now when
> > I had previously installed in "normal" security mode.
>
> As far as I know there is a way to change the security mode after
> installation (somewhere in the control center)
>
> > As a regular user, I can't access the Win2k partitions on my dual boot
> > machine. I have no problem accessing them as root. I have tried
> > changing the permissions (as root) to read access for "user", "group",
> > and "others". This is the message I get: "chmod: changing permissions
> > of `/mnt/win_e/': Read-only file system".
>
> To set the permissions when the partition is mounted, use the umask and
> gid parameter (see the mount man page, Mount options for fat and Mount
> options for nfs). Take a look at the parameters in your fstab.
>
> > I know that win 2k is mountable only as read-only. What I can't
> > figure out is why I can't change the permissions on it as I was able
> > to read data from it on a previous install without having to do
> > anything other than navigating to the directory I wanted.
>
> Did you change the filesystem from FAT to NTFS? NTFS write support is
> experimental and can cause data loss, so probably this is why your
> partition is mounted read-only.
>
> best regards
> Andreas Janssen

As far as I am aware of you can never change permissions of FAT, NTFS
etc. Because there is no native permissions in non-Linux/U'x systems.
You should check your mountpoints if they need more permissions. This
should be possible.
/D

Hello

Dietmar (<d@ufie.org>) wrote:

> [permissions on windows partition]

> As far as I am aware of you can never change permissions of FAT, NTFS
> etc. Because there is no native permissions in non-Linux/U'x systems.
> You should check your mountpoints if they need more permissions. This
> should be possible.

Files on FAT partitions have no own ownership, but you can set ownership
and permissions of FAT partitions with the mount command. You can for
example say that you want to have the files on the partition be treated
as if they belonged to the user group (using the gid parameter) or say
that all files on the partition are world-writable (using the umask
parameter).

And I think the read-only-attribute can be used with files on FAT
partitions.

However changing the mountpoint permissions will not help. Example:

sirius:/# ll -d /mnt/windows
rwxr-xr-x 2 andreas andreas 1024 20. Jul 22:04 /mnt/windows

sirius:/# mount /mnt/windows/
sirius:/# ll -d /mnt/windows
drwxr-xr-x 7 root root 4096 1. Jan 1970 /mnt/windows

sirius:/# umount /mnt/windows
sirius:/# ll -d /mnt/windows
drwxr-xr-x 2 andreas andreas 1024 20. Jul 22:04 /mnt/windows

As soon as a filesystem is mounted, the permissions of the directory
where it is mounted (the mountpoint) become unimportant. As long as the
partition is mounted, the permissions will be those of the "root"
directory on the mounted file system.

best regards
Andreas Janssen

--
Andreas Janssen
andreas.janssen@bigfoot.com
PGP-Key-ID: 0xDC801674
Registered Linux User #267976

In article <c443c53f.0308121311.2b819e59@posting.google.com >, Dietmar wrote:
> As far as I am aware of you can never change permissions of FAT, NTFS
> etc. Because there is no native permissions in non-Linux/U'x systems.
> You should check your mountpoints if they need more permissions. This
> should be possible.
> /D
You can try to change the permissions on an NTFS drive mounted rw but
the results are not pretty! Ask me how I know this:-)
Louis