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Adna rim
n00b
Joined: 24 Nov 2007
Posts: 10
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 Posted: Mon Dec 10, 2007 3:41 pm Post subject: Some problems with mounting an ext3 usb-device |
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Hi folks,
I have a little problem here with mounting an ext3 partition (usb-device). I had this usb-device fat-formatted before I changed it to ext3. With fat I mounted it this way: | Code: | | sudo mount -t vfat -o sync,uid=0,gid=46,umask=007 /dev/sdc1 /media/usb-stick |
Which is correct. My user-account is member of plugdev(46) so I had rwx-rights in this device.
Now I wanted to change it to ext2 so I plugged it in and executed:
| Code: |
fdisk -l
Disk /dev/sdc: 1051 MB, 1051721728 bytes
32 heads, 63 sectors/track, 1018 cylinders
Units = cylinders of 2016 * 512 = 1032192 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdc1 1 1018 1026112+ 6 FAT16
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You see it is on /dev/sdc1 so I executed sudo mkfs.ext2 /dev/sdc1 which runs without any errors.
But now there are two problems I have:
1.) How do I mount an ext2 partition with rights like I did with the fat-partition?
| Code: |
[16:32:44]bash:/$ sudo mount -t auto -o rw /dev/sdc1 /media/usb-stick
[16:35:05]bash:/$ ls -al /media/usb-stick/
insgesamt 24
drwxr-xr-x 3 root root 4096 2007-12-10 16:31 .
drwxr-xr-x 7 root root 4096 2007-12-10 10:38 ..
drwx------ 2 root root 16384 2007-12-10 16:31 lost+found
[16:35:41]bash:/$ touch /media/usb-stick/testfile
touch: can't touch „/media/usb-stick/testfile“ : Permission denied
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So it seems like -o rw doesn't impress it  How can I tell an ext2 partition while mounting which user/group shall have which rights?
2.) You see that after formatting I have the lost+found folder on the device which indicates more or less that it's ext2 formated. But if I execute fdisk -l it still shows FAT16 as System. Why is this so?
greets |
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chanakam2000
Tux's lil' helper
Joined: 14 Sep 2006
Posts: 76
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| Posted: Mon Dec 10, 2007 4:11 pm Post subject: Re: Some problems with mounting an ext3 usb-device |
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Try this
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Adna rim
n00b
Joined: 24 Nov 2007
Posts: 10
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| Posted: Mon Dec 10, 2007 5:06 pm Post subject: |
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| I think mke2fs and mkfs.ext2 are the same. Theres no difference while executing them. |
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djinnZ
Advocate
Joined: 02 Nov 2006
Posts: 4831
Location: somewhere in L.O.S.
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| Posted: Mon Dec 10, 2007 5:48 pm Post subject: Re: Some problems with mounting an ext3 usb-device |
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| Adna rim wrote: | | drwxr-xr-x 3 root root 4096 2007-12-10 16:31 . |
sudo chmod ag+w /media/usb-stick
or
sudo chown myuser /media/usb-stick
sudo chgrp users /media/usb-stick
By default the root dir of a partition will be formatted with the user (in this case root) who has started the mkfs program as owner and by his umask and you can only change.
In old unix system there are a special group of user allowed to write on removable device and nobody for those cases.
If you found it, the -g and -u options of tune2fs will be set only the owner of the reseved percentage (-m option)
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