[ubuntu-uk] Problem on upgrade to 12.10 with mounting/unmounting discs, was Problem on upgrade to 12.10 with one usb disc

[allen williams]

Belated thanks to Colin, whose suggestion has enabled access to the usb  
hard disc concerned as normal. However, I still get the spurious  
inaccessible mounting (at /mnt) of the relevant hard disc as  
"usb-ST350041_8AS_60CAFFFFFFFF-0:0-part1".

I also still have problems with the cd/dvd drive. Briefly, audio cds mount  
and can be accessed without problems when inserted. Video dvds do not.  
Some data discs will mount straight away, others will mount after some  
minutes (up to about 5) of whirring and clunking and yet others not at  
all, despite the whirring and clunking. A further category will mount once  
in a blue moon: they don't work repeatedly, but if retried will on the  
umpteenth occasion suddenly mount up without problems, only to revert to  
non recognition on the next insertion. Newly burnt data discs will  
typically mount up once after burning and then fall into the "blue moon"  
category. Blank discs (cd and dvd) will mount up and can be burnt despite  
there always springing up a "Unable to mount Blank CD-R (or DVD+R) Disc  
Location is already mounted" warning.

I stress that all these problems have only arisen since the version  
upgrade and I have not (apart from following Colin's suggestion) fiddling  
with anything.

I simply do not understand what is going on here and am particularly fazed  
by the inconsistency of it all. Help!

Below is the relevant bit of previous correspondence.

Happy new year

Allen Williams


> In response to the kind suggestion, I have copied fstab (and fstab.bak,  
> for
> good measure) and reproduced them below:
>
> # /etc/fstab: static file system information.
> #
> # <file system> <mount point>   <type>  <options>       <dump>  <pass>
> proc                                       /proc          proc
> defaults                    0  0
> # /dev/sda8
> UUID=6a062fdd-e7a2-4f37-9d23-0994e6ec6ee9  /              ext3
> relatime,errors=remount-ro,user_xattr  0  1
> # /dev/sda9
> UUID=2ea8ad99-daa5-4b44-9673-35d5c2c984e1  none           swap         sw
> 0  0
> /dev/scd0                                  /media/cdrom0  udf,iso9660
> user,noauto,exec,utf8       0  0
> /dev/disk/by-id/usb-ST350041_8AS_60CAFFFFFFFF-0:0-part1
> /mnt/usb-ST350041_8AS_60CAFFFFFFFF-0:0-part1 auto
> nosuid,nodev,nofail,x-gvfs-show 0 0
>>
>> Edit the file by typing, in a terminal
>> gksu gedit /etc/fstab
>> and comment out the /dev/scd0 line and the /dev/disk/by-id... lines by
>> adding a # character at the front of the line, and save the file.
>> Make sure you do not change anything else.  Reboot and see if that
>> helps.

>> Colin

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