On Jul 4, 6:05 pm, Roby <r...@no-address.net> wrote:
> lalawawa wrote:
> > Hi, I just bought a 400Mbyte usb disk.
>
> > My OS is Ubuntu version 5, I've recently done the updates to it.
>
> > My computer is a Sony VAIO PCV-RX270DS that I bought in 2001, with
> > about 400Mbytes of disk and the usb port is USB 1 (that manual doesn't
> > say which USB version because I think USB 2.0 wasn't out yet). The
> > disk is connected through a hub.
>
> > The drive is a 400GB Simpletech drive. The specifications make it
> > clear it's USB 1.1 compatible. All the online technical support
> > assumes you're on Windows.
>
> > When I turn on the disk, it appears in the /media directory by the
> > filename ' simpletech ' (not spaces before and after the name). The
> > fstab entry that appears is
>
> > /dev/sda /media/usb0 auto rw,user,noauto 0 0
>
> > If I cd to /media and do 'ls -ld \ simpletech\ ', I get
> > dr-x------ 1 wulluw wulluw 4096 2007-02-20 10:25 simpletech
> > if I go into that directory and do 'ls -la' I get
> > total 8
> > dr-x------ 1 wulluw wulluw 4096 2007-02-20 10:25 .
> > drwxr-xr-x 7 root root 4096 2007-07-04 14:20 ..
> > dr-x------ 1 wulluw wulluw 0 2007-02-20 10:25 System Volume
> > Information
> > if I try 'touch a' it says
> > touch: cannot touch `a': Read-only file system
> > if I try 'sudo touch a' it still says
> > touch: cannot touch `a': Read-only file system
> > I cd back to /media
> > $ chmod +w \ simpletech\ /
> > chmod: changing permissions of ` simpletech /': Read-only file system
> > $ sudo chmod +w \ simpletech\ /
> > chmod: changing permissions of ` simpletech /': Read-only file system
>
> > Why is it saying the filesystem is readonly when /etc/fstab clearly
> > says it's rw? What do I have to do to get the disk mounted rw? A
> > 400GB readonly disk with nothing on it isn't very useful.
>
> > Any help would be appreciated.
>
> > Bill
>
> My guess: the drive is formatted ntfs and the "auto" in the fstab entry
> is causing linux to load the ntfs driver (rather than ntfs-3g). The
> drive will be painfully slow at usb 1.1. usb2 pci cards are cheap and
> do a great job.
I would like to put in a USB 2.0 board, but I absolutely, positively
don't want to make any hardware changes to my box until I'm able to
back up.
In the past, I would back up on CD-ROM using K3B. Then suddenly,
probably as a result of an upgrade, neither K3B nor the CD-ROM Creator
software are able to find my CD burner. Here's my fstab:
$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
/dev/mapper/Ubuntu-root / ext3
defaults,errors=remount-ro 0 1
/dev/hda1 /boot ext3 defaults 0 2
/dev/mapper/Ubuntu-swap_1 none swap sw
0 0
/dev/hdc /media/cdrom0 udf,iso9660 user,noauto 0 0
/dev/hdd /media/cdrom1 udf,iso9660 user,noauto 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto 0 0
/dev/sda /media/usb0 auto rw,user,noauto 0 0
$
$ df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/Ubuntu-root
37079744 12680436 22515764 37% /
tmpfs 193436 0 193436 0% /dev/shm
tmpfs 193436 12588 180848 7% /lib/modules/
2.6.12-10-386/volatile
/dev/hda1 233335 19153 201734 9% /boot
/dev/sda1 390708800 77912 390630888 1% /media/
simpletech
$
but I don't think upgrading to a 2.0 port is going to change the
permissions of the disk. I think all that would be accomplished by
upgrading to USB 2.0 would be to change my slow 400GB readonly disk
with nothing on it to a fast 400GB disk with nothing on it.