Unable to mount USB Flash memory created on CentOS
freebsd at edvax.de
Fri Jul 28 18:52:10 UTC 2017
On Fri, 28 Jul 2017 13:22:06 -0400, James B. Byrne via freebsd-questions wrote:
> On my new FreeBSD workstation I am trying to read data off of a USB
> 'key' flash memory stick recorded using rsync on a CentOS-6 system. I
> was able to do this successfully up until the point that I inserted
> another usb stick. Now I cannot mount or read either.
Did you unmount the previous stick correctly?
When you say it was "recorded" with CentOS, which file system
has been used? Or is it a "raw" file (no file system at all,
output written directly to the device)?
> I probably made things worse by first removing both keys from the host
> and then deleting the contents of /media. However, that is done.
That should not be a big problem, as /media is usually populated
automatically by a desktop environment's automounter, or manually
by the system administrator (which implies that you can easily
recreate required mountpoints under /media if you use /etc/fstab
as a template).
> At the moment what happens is that upon insertion the 'computer'
> browser pane will display a filesystem labelled 'USB Drive' but I
> cannot open it for viewing.
Is it empty? When you say it's being opened, I assume this is a
file browser - but from which desktop? They are quite different!
Check things easily: Open a terminal and check the outpuf of
% mount -v
Is the USB stick (usually /dev/da0 or /dev/da0s1 or something
like that) _really_ mounted?
Check what's on the USB stick, using
% gpart show da0
where da0 is the device for the USB stick. To check if da0 is
correct, check the last lines of
It should be easy to identify what the USB stick is.
> Neither does a mount command show in the
> right-click popup menu.
So it probably _is_ mounted. Does the menu show a "detach",
"unoumt" or "eject" entry or symbol?
As I said, don't rely on distracting pictural elements. Query
the OS directly using the command line. It will tell you what
is _really_ happening.
> Rebooting the system does not return the system to its former behaviour.
It _never_ does. ;-)
> How is this fixed? Is it not possible to have two USB drives mounted
You need to provide more information.
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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