Re: Pendrive not mounted when another usb device is plugged in
Rodolfo Medina <firstname.lastname@example.org> writes:
>>> In my /etc/fstab there is the following entry:
>>> /dev/sda /mnt/sda vfat rw,user,noauto 0 0
>>> , so I normally mount my usb pendrive simply with:
>>> $ mount /mnt/sda
>>> . But, now that I have a usb umts modem (Huawei e169), when it is plugged
>>> in I don't manage to mount the pendrive: the system claims that the medium
>>> is `not found'. Then I have to unplug the modem and plug the pendrive in
Ron Johnson <email@example.com> writes:
>> [...] in /etc/fstab I'd refer to that drive not as /dev/sda but by it's
> All right, I did so and now the mount problem seems to be fixed. But now,
> when I want to unmount it, with: `umount /mnt/sda', the output is:
> `Segmentation fault', and the drive is not unmounted.
> How to unmount it now?
I have to unmount it as root. In fstab there is now:
UUID=44F1-7D0C /mnt/sda vfat rw,user,noauto 0 0
, but as a normal user I can only mount the device, not unmount it: to unmount
it I must be root. Why this?
Another thing that is not clear to me is the difference between the `user' and
`users' options of `mount' command.
But now I understand why the problem occurs trying to mount the drive when the
umts device is already plugged in: for some reason, although the umts device
is mapped into /dev/ttyUSB0, /dev/sda comes to be busy. So, if I add in fstab
/dev/sdb /mnt/sdb vfat rw,user,noauto 0 0
, I can mount the pendrive on /mnt/sdb. But now I wish to use the UUID as
normal user. Suggestions welcome.