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Old 03-08-2011, 06:19 AM   #1
osdevkid
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Registered: Mar 2011
Location: India, Chennai
Posts: 14

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How to change the ownership of files mounted from floppy image


Dear All,

I have mounted a floppy image file as below

$> su
$> /sbin/losetup /dev/loop0 /mnt/win_e/images/grubdos.img
$> mkdir /mnt/floppy
$> mount /dev/loop0 -o loop /mnt/floppy

Floopy image mounted on "/mnt/floppy", now I have tried to create a file inside the floppy image, file created successfully, however I can not change the ownership of the file.

$> cd /mnt/floppy
$> touch hai.txt
$> ll hai.txt
-rwxr-xr-x 1 root root 0 Mar 8 17:29 hai.txt
$> chown user1:user1 hai.txt
chown: changing ownership of 'hai.txt': Operation not permitted

How to change the ownership of the file and folder in mounted floppy image ?
 
Old 03-08-2011, 06:42 AM   #2
ravikiran189
Member
 
Registered: Mar 2011
Posts: 45

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Hi,
From the ls-ltr i see the file hai.txt has root as its group & owner. you didn't say what linux you are using. You need root privilages for changing the ownership

login to root and try

#chown user1:user1 hai.txt

or try with sudo command
$sudo user1:user1 hai.txt
 
Old 03-08-2011, 07:03 AM   #3
osdevkid
LQ Newbie
 
Registered: Mar 2011
Location: India, Chennai
Posts: 14

Original Poster
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Thanks for your reply.

Quote:
need root privilages for changing the ownership

login to root and try
In the very first line itself, I have entered as root user.

Quote:
$> su
$> /sbin/losetup /dev/loop0 /mnt/win_e/images/grubdos.img
$> mkdir /mnt/floppy
$> mount /dev/loop0 -o loop /mnt/floppy

Quote:
or try with sudo command
$sudo user1:user1 hai.txt
I am using CentOS.
 
Old 03-08-2011, 08:21 AM   #4
ravikiran189
Member
 
Registered: Mar 2011
Posts: 45

Rep: Reputation: 4
hi,
Try using su - instead or login to root account and see if it works
 
  


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