Permission Denied On USB Hard Drive

**Cherry5** · 04-09-2010, 05:53 AM

I'm trying to move some .jpg & .mp3 files from a USB hard drive that is formatted under MAC OSX (0xaf) to a Windows Vista Laptop.

I am using a Knoppix 6 live cd. Knoppix sees the laptop hard drive as

System /media/sda2
Vista /media/sda3
Recovery /media/sda1

and the USB hard drive as

disk2s1

I can see files on the laptop's hard drive but when I try to access the USB drive I get 'Permission Denied'

Can the files on this drive be transferred to the laptop?

Thanks for any help or suggestions

**krishna.murphy** · 04-09-2010, 10:14 AM

Originally Posted by Cherry5

I'm trying to move some .jpg & .mp3 files from a USB hard drive that is formatted under MAC OSX (0xaf) to a Windows Vista Laptop.

I am using a Knoppix 6 live cd. Knoppix sees the laptop hard drive as

System /media/sda2
Vista /media/sda3
Recovery /media/sda1

and the USB hard drive as

disk2s1

I can see files on the laptop's hard drive but when I try to access the USB drive I get 'Permission Denied'

Can the files on this drive be transferred to the laptop?

Thanks for any help or suggestions

Have you tried

Code:

ls -la disk2s1

to get more information (owner, etc.), or sudo to make your requests with root permissions?

Cheers!
Krishna

**Cherry5** · 04-09-2010, 03:01 PM

Originally Posted by krishna.murphy

Have you tried

Code:

ls -la disk2s1

to get more information (owner, etc.), or sudo to make your requests with root permissions?

Cheers!
Krishna

Hi

All I get is: ls cannot access disk2s1 no such file or directory

**krishna.murphy** · 04-10-2010, 04:14 AM

Originally Posted by Cherry5

Hi

All I get is: ls cannot access disk2s1 no such file or directory

Okay, try this:

Code:

locate disk2s1

That should tell you where it is, I think. The MacOS disk format seems to be pretty challenging for other OSs...

Krishna

**Cherry5** · 04-10-2010, 07:46 AM

Originally Posted by krishna.murphy

Okay, try this:

Code:

locate disk2s1

That should tell you where it is, I think. The MacOS disk format seems to be pretty challenging for other OSs...

Krishna

Hi

Now I get this:

locate:warning:database '/var/cache/locate/locaedb' is more than 8 days old (actual age is 61.0days)

**klaus2008** · 04-10-2010, 08:44 AM

I think that "disk2s1" is the partition's label. Usually the partition gets a mount point in the directory /media and that mount point is named after the device name. In the PCMan File Manager the partitions are often identified by their label. You might try

Code:

ls -l /dev/disk/by-label/disk2s1

to get the device name. Execution of the command

Code:

mount

delivers information about the partition's mount point if it's already mounted. Afterwards you might execute

Code:

ls -la "mount point"

Example: The partition has got the label "Cruzer1" and the device name is /dev/sda1. The mount command delivers the mount point /media/sda1. Thus I would execute

Code:

ls -la /media/sda1

in order to see the owner, group and permissions.

If the partition has not yet been mounted then the mount command won't show you a mount point, but
you might try

Code:

sudo mkdir /media/macdisk
sudo mount -o gid=1000,uid=1000 /dev/disk/by-label/disk2s1 /media/macdisk
ls -la /media/disk2s1

If this does not work then mount will give you an error message.

**Cherry5** · 04-10-2010, 01:06 PM

The replies to the commands are as follows:

lrwxrwxrwx 1 root root 10 Apr 10 14:19 /dev/disk/by-label/disk2s1 -> ../../sdb1

rootfs on / type rootfs (rw,relatime)
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
/dev/sr0 on /mnt-system type iso9660 (ro,relatime)
tmpfs on /ramdisk type tmpfs (rw,relatime,size=1048576k)
/dev/cloop on /KNOPPIX type iso9660 (ro,relatime)
unionfs on /UNIONFS type aufs (rw,relatime,si=9c1cdfb0,noplink)
unionfs on /home type aufs (rw,relatime,si=9c1cdfb0,noplink)
usbfs on /proc/bus/usb type usbfs (rw,relatime)
tmpfs on /UNIONFS/var/run type tmpfs (rw,relatime,size=10240k)
tmpfs on /UNIONFS/var/lock type tmpfs (rw,relatime,size=10240k)
tmpfs on /UNIONFS/var/log type tmpfs (rw,relatime,size=102400k)
tmpfs on /tmp type tmpfs (rw,relatime,size=1048576k)
udev on /dev type tmpfs (rw,relatime,size=20480k)
tmpfs on /dev/shm type tmpfs (rw,relatime,size=1048576k)
devpts on /dev/pts type devpts (rw,relatime,mode=1777)
/dev/sda1 on /media/sda1 type fuseblk (rw,nosuid,nodev,relatime,user_id=1000,group_id=10 00,allow_other,blksize=4096)
/dev/sda2 on /media/sda2 type fuseblk (rw,nosuid,nodev,relatime,user_id=1000,group_id=10 00,allow_other,blksize=4096)
/dev/sda3 on /media/sda3 type fuseblk (rw,nosuid,nodev,relatime,user_id=1000,group_id=10 00,allow_other,blksize=4096)
/dev/sdb1 on /media/sdb1 type hfsplus (ro,nosuid,nodev,relatime,umask=22,uid=1000,gid=10 00,nls=utf

ls: cannot access mount point: No such file or directory

ls: /media/sda1/System Volume Information: Permission denied
total 20
drwxr-xr-x+ 1 knoppix root 4096 Jun 4 2009 .
drwxr-xr-x 8 root root 0 Apr 10 14:26 ..
drwxr-xr-x+ 1 root root 0 Jun 1 2009 ImageLayout
drwxr-xr-x+ 1 knoppix root 0 Mar 21 2007 Program Files
drwxr-xr-x+ 1 knoppix root 0 Mar 21 2007 ProgramData
drwx------ 1 root root 0 Jun 1 2009 System Volume Information
drwxr-xr-x+ 1 knoppix root 0 Mar 21 2007 Users
drwxr-xr-x+ 1 knoppix root 8192 Mar 21 2007 Windows
-rwxr-xr-x 1 root root 0 Nov 10 2006 hdd
drwxr-xr-x+ 1 knoppix root 4096 Mar 21 2007 sources
drwxr-xr-x+ 1 root root 4096 Jun 13 2007 tgm

sage: mount -V : print version
mount -h : print this help
mount : list mounted filesystems
mount -l : idem, including volume labels
So far the informational part. Next the mounting.
The command is `mount [-t fstype] something somewhere'.
Details found in /etc/fstab may be omitted.
mount -a [-t|-O] ... : mount all stuff from /etc/fstab
mount device : mount device at the known place
mount directory : mount known device here
mount -t type dev dir : ordinary mount command
Note that one does not really mount a device, one mounts
a filesystem (of the given type) found on the device.
One can also mount an already visible directory tree elsewhere:
mount --bind olddir newdir
or move a subtree:
mount --move olddir newdir
One can change the type of mount containing the directory dir:
mount --make-shared dir
mount --make-slave dir
mount --make-private dir
mount --make-unbindable dir
One can change the type of all the mounts in a mount subtree
containing the directory dir:
mount --make-rshared dir
mount --make-rslave dir
mount --make-rprivate dir
mount --make-runbindable dir
A device can be given by name, say /dev/hda1 or /dev/cdrom,
or by label, using -L label or by uuid, using -U uuid .
Other options: [-nfFrsvw] [-o options] [-p passwdfd].
For many more details, say man 8 mount .

I still get 'Permission Denied' when I try to access the disk. I can mount and un-mount by right clicking the drive.

**klaus2008** · 04-10-2010, 01:39 PM

Originally Posted by Cherry5

/dev/sdb1 on /media/sdb1 type hfsplus (ro,nosuid,nodev,relatime,umask=22,uid=1000,gid=10 00,nls=utf

Your USB disk has been mounted on /media/sdb1. You may not write on it but you may read. Now you might run the command

Code:

ls -al /media/sdb1

to see owner, group and permissions of the files and directories.

**Cherry5** · 04-10-2010, 02:37 PM

After ls -al /media sdb1

root@Microknoppix:/home/knoppix# ls -al /media/sdb1
total 0
drwxrwxr-x 2 knoppix knoppix 0 Apr 10 16:16 .
drwxr-xr-x 7 root root 0 Apr 10 16:16 ..
root@Microknoppix:/home/knoppix#

**Cherry5** · 04-11-2010, 08:50 AM

Originally Posted by Cherry5

After ls -al /media sdb1

root@Microknoppix:/home/knoppix# ls -al /media/sdb1
total 0
drwxrwxr-x 2 knoppix knoppix 0 Apr 10 16:16 .
drwxr-xr-x 7 root root 0 Apr 10 16:16 ..
root@Microknoppix:/home/knoppix#

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