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justin_brody
Apprentice
Joined: 26 Jan 2005
Posts: 283
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 Posted: Wed Jan 23, 2008 1:23 pm Post subject: Can't change permissions on USB stick [SOLVED] |
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Hi,
I'm sure I'm missing something obvious here. I want to be able to write to my USB drive as a user.
I mount it (as root) with:
| Code: |
samsara ~ # mount -t vfat /dev/sdc1 /mnt/usb/
samsara ~ # cd /mnt/usb/
samsara usb # chmod 777 .
samsara usb # ls -al
total 2432
drwxr-xr-x 3 root root 16384 Dec 31 1969 .
drwxr-xr-x 9 root root 240 Jan 13 17:43 ..
-rwxr-xr-x 1 root root 777740 Mar 29 2007 ImationLOCKv108-BManual.pdf
-rwxr-xr-x 1 root root 1609728 Mar 16 2007 LOCKv116.exe
drwxr-xr-x 4 root root 32768 Jan 22 07:50 portfolio-retreat
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So it didn't actually change to 777. Anyone know why and what I can do to let my regular user write to this file?
Thanks!
Last edited by justin_brody on Tue Feb 19, 2008 11:20 am; edited 1 time in total |
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eccerr0r
Watchman
Joined: 01 Jul 2004
Posts: 9679
Location: almost Mile High in the USA
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| Posted: Wed Jan 23, 2008 2:56 pm Post subject: |
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The vfat filesystem does not support Unix permissions. You'll either
1) use another filesystem 
2) Mount with global permissions to the drive. specify umask=000 in fstab, and everyone can use that disk.
3) Mount as a user. Specify "user" in fstab or I don't know the new-fangled udev method to handle this. Then the user that mounts the drive has full access to the disk.
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Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
What am I supposed watching? |
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Abraxas
l33t
Joined: 25 May 2003
Posts: 814
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| Posted: Wed Jan 23, 2008 2:59 pm Post subject: Re: Can't change permissions on USB stick |
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| justin_brody wrote: | Hi,
I'm sure I'm missing something obvious here. I want to be able to write to my USB drive as a user.
I mount it (as root) with:
| Code: |
samsara ~ # mount -t vfat /dev/sdc1 /mnt/usb/
samsara ~ # cd /mnt/usb/
samsara usb # chmod 777 .
samsara usb # ls -al
total 2432
drwxr-xr-x 3 root root 16384 Dec 31 1969 .
drwxr-xr-x 9 root root 240 Jan 13 17:43 ..
-rwxr-xr-x 1 root root 777740 Mar 29 2007 ImationLOCKv108-BManual.pdf
-rwxr-xr-x 1 root root 1609728 Mar 16 2007 LOCKv116.exe
drwxr-xr-x 4 root root 32768 Jan 22 07:50 portfolio-retreat
|
So it didn't actually change to 777. Anyone know why and what I can do to let my regular user write to this file?
Thanks! |
FAT doesn't support permissions. Try this guide... http://gentoo-wiki.com/HOWTO_Mount_Windows_partitions_%28DOS%2C_FAT%2C_NTFS%29 |
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StarDragon
Guru
Joined: 19 Jun 2005
Posts: 390
Location: tEXas
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| Posted: Wed Jan 23, 2008 6:03 pm Post subject: Re: Can't change permissions on USB stick |
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| justin_brody wrote: | | I mount it (as root) |
Try to mount it from a regular user by adding it to /etc/fstab. It worked for me. |
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schachti
Advocate
Joined: 28 Jul 2003
Posts: 3765
Location: Gifhorn, Germany
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kortec
n00b
Joined: 20 Dec 2004
Posts: 68
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| Posted: Wed Jan 23, 2008 9:02 pm Post subject: |
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My fstab line for my fat32 partition looks like this, just for reference:
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/dev/hda2 /mnt/media vfat user,noatime,rw,gid=media,umask=007 0 0
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which mounts hda2 to /mnt/media, such that it can be done by a user, but only gives meaningful permissions to people in the media group. Might help. |
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justin_brody
Apprentice
Joined: 26 Jan 2005
Posts: 283
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| Posted: Tue Feb 19, 2008 11:20 am Post subject: |
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| Great - this worked. Thanks for all the responses! |
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