[kubuntu] Problems with CHMOD Absolute Beginner Talk Question

Question [kubuntu] Problems with CHMOD ( Ubuntu Forums Absolute Beginner Talk )
Updated: 2010-07-21 05:55:04 (9)

[kubuntu] Problems with CHMOD

Hello! I'm a newbie and this is my first post
I have a problem with my data-HDD: it's regolarly mounted, but only the superuser can write on it.
If I try to change permission with chmod, e.g. as in

Code:

sudo chmod -R 777 /media/sda4

it does say it's changed everything, but in fact it's not.
If I look at the disk properties with dolphin he keeps showing me the group has not writing privileges.
Can you please help? Thanks in advance!

Answers: [kubuntu] Problems with CHMOD ( Ubuntu Forums Absolute Beginner Talk )

[kubuntu] Problems with CHMOD

What format is the drive?

Titan8990

[kubuntu] Problems with CHMOD

As Titan8990 said, the file system the drive uses is important. In particular FAT has no notion of permissions. I reformatted my thumb drive as ext2 to avoid this problem.

Simian Man

[kubuntu] Problems with CHMOD

It's a FAT32 (I put "vfat" in fstab).
Incredibly I'm having no problem with the NTFS partition instead [sigh]

fairy._.queen

[kubuntu] Problems with CHMOD

Thanks both of you for your reply!
I dont understand this: you say fat has no permission, but the "ls -l" command output for that folder is:

Code:

drwxr-xr-x 4 root root 16384 1970-01-01 01:00 sda4

which shows, if im correct, that root has rwx privileges, the group rx etc.
What do you mean?

P.s.: I need that hdd to be accessed by both kubuntu and windows and I was told fat was the best file system for that. do you disagree?

fairy._.queen

[kubuntu] Problems with CHMOD

hi,
and what happens if you do this:

make new mount point

Code:

sudo mkdir /media/windowsfat

mount the partition

Code:

sudo mount /dev/sda4 /media/windowsfat -t vfat -o umask=000

can you please post also the output of

Code:

sudo fdisk -l
cat /etc/fstab

Michael.Godawski

[kubuntu] Problems with CHMOD

Quote:

Originally Posted by fairy._.queen

P.s.: I need that hdd to be accessed by both kubuntu and windows and I was told fat was the best file system for that. do you disagree?

fat should work well then, as windows has no idea what to do with ext2.

Quote:

Originally Posted by fairy._.queen

Code:

drwxr-xr-x 4 root root 16384 1970-01-01 01:00 sda4

which shows, if im correct, that root has rwx privileges, the group rx etc.

yes, and since you are sudo-ing, I dont see what the problem could be...
I would try again and reformat unless you have something you need on the drive

Drubie

[kubuntu] Problems with CHMOD

Quote:

Originally Posted by Michael.Godawski

can you please post also the output of

Code:

sudo fdisk -l
cat /etc/fstab

This is the new output of "ls -l":

Code:

lrwxrwxrwx 1 root root     6 2009-01-07 01:23 cdrom -> cdrom0
drwxr-xr-x 2 root root  4096 2009-01-07 01:23 cdrom0
drwxr-xr-x 3 root root 16384 1970-01-01 01:00 sda1
drwxrwxrwx 1 root root  4096 2009-01-07 17:37 sda2
drwxr-xr-x 4 root root 16384 1970-01-01 01:00 sda4
drwxr-xr-x 4 root root 16384 1970-01-01 01:00 windowsfat

This is the output of "fdisk -l"

Code:

Disco /dev/sda: 40.0 GB, 40007761920 byte
255 testine, 63 settori/tracce, 4864 cilindri
Unit? = cilindri di 16065 * 512 = 8225280 byte
Identificativo disco: 0x70000000

Dispositivo Boot      Start         End      Blocks   Id  System
/dev/sda1               1           8       64228+  de  Dell Utility
/dev/sda2   *           9        1538    12289725    7  HPFS/NTFS
/dev/sda3            1539        2747     9711292+   5  Esteso
/dev/sda4            2748        4864    17004802+   b  W95 FAT32
/dev/sda5            1539        2558     8193118+  83  Linux
/dev/sda6            2559        2747     1518111   82  Linux swap / Solaris

this is the output of "cat /etc/fstab":

Code:

# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
# /dev/sda5
UUID=7dfe4279-1cdd-4886-a146-188c99098c34 /               ext3    relatime,errors=remount-ro 0       1
# /dev/sda6
UUID=38b7488b-504d-4d87-911b-cf353b605fd1 none            swap    sw              0       0
/dev/sda1       /media/sda1     msdos           defaults,users  0       0
/dev/sda2       /media/sda2     ntfs-3g         users,dev,auto,exec,suid,async,rw       0       0
/dev/sda4       /media/sda4     vfat            users,dev,auto,exec,suid,async,rw       0       0
/dev/scd0       /media/cdrom0   udf,iso9660 user,noauto,exec,utf8 0       0

Thanks both for the fast reply!

fairy._.queen

[kubuntu] Problems with CHMOD

Quote:

Originally Posted by Drubie

fat should work well then, as windows has no idea what to do with ext2.

yes, and since you are sudo-ing, I dont see what the problem could be...
I would try again and reformat unless you have something you need on the drive

I had already reformat...
thanks anyway!

fairy._.queen

[kubuntu] Problems with CHMOD

What I see is your sd4 folder is still having 755 permision.

First unmount the partition using

Quote:

umount -a

, then use sudo chmod command, then remount the partition and see.

Guruprasad

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