Karmic: how to delete /dev/sr1

Mirto Silvio Busico mirtosilvio.busico at fastwebnet.it
Mon Mar 8 10:13:31 UTC 2010


Clay Weber ha scritto:
> On Saturday 06 March 2010 03:04:20 pm Alan Dacey Sr. wrote:
>> On Saturday 06 March 2010 01:58:09 pm Mirto Silvio Busico wrote:
>>> Hi all,
>>> I have an external USB hard disk from Western Digital (model My
>>> Passport).
>>> This unit comes with two partitions, that I see and I can mount:
>>>     * /dev/sr1 that is understood as a CD
>>>     * /dev/sdb1 that is a normal NTFS partition
>>> If I mount the partitions "mount" says:
>>> ...
>>> /dev/sr1 on /media/WD SmartWare type udf
>>> (ro,nosuid,nodev,uhelper=hal,uid=1000)
>>> /dev/sdb1 on /media/My Passport type fuseblk
>>> (rw,nosuid,nodev,allow_other,blksize=4096)
>>> The problem is tah I'm not able to destroy, eliminate, kill :-) the
>>> /dev/sr1 partition
>>> With the partitions unmounted, nor "gparted" nor "fdisk" see the damned
>>> partition
>>> Trying "sudo fdisk /dev/sr1" I see:
>>> mirto at msb02:~/script$ sudo fdisk /dev/sr1
>>> Impossibile scrivere la tabella delle partizioni.
>>> Nota: la dimensione del settore è 2048 (non 512)
>>> Il dispositivo non contiene né una tabella delle partizioni DOS valida,
>>> né una disklabel Sun, SGI od OSF
>>> Building a new DOS disklabel with disk identifier 0x0c58531d.
>>> Changes will remain in memory only, until you decide to write them.
>>> After that, of course, the previous content won't be recoverable.
>>> Attenzione: il flag 0x0000 non valido della tabella delle partizioni 4
>>> verrà corretto con w(rite)
>>> Comando (m per richiamare la guida): p
>>> Disco /dev/sr1: 700 MB, 700448768 byte
>>> 255 testine, 63 settori/tracce, 21 cilindri
>>> Unità = cilindri di 16065 * 2048 = 32901120 byte
>>> Identificativo disco: 0x0c58531d
>>> Dispositivo Boot      Start         End      Blocks   Id  System
>>> Comando (m per richiamare la guida):
>>> How can I kill this partition?
>>> Thanks
>>>     Mirto
>>> P.S. BTW I use Karmic 64 bit with updates of 4 March
>> This is an odd day.  I was about to ask the very same thing.  I saved this
>> as a draft to send after I tried one last thing:
>>   I got a free usb stick that has a read-only, write-protected partition
>> that mounts as a cd.  I find this very annoying and have been trying to
>> get rid of it for months.  I either am phrasing my google searches wrong
>> or am using the wrong words.  Whatever I find is all about actual cd
>> drives and not about a usb stick.  I can play with the ownership and such
>> but I can't find a way to get to get it to mount it as something like
>> /dev/sdh1.  It always mounts as /dev/sr1  It is always non-writable so I
>> can't kill the partition.
>>   U3 tools do not work.
>>   Does anybody know where to find out how to do this?
>> From what I can see, if it is not a U3 partition, you are out of luck
>> unless you send it away to a company that can do it.  The secret U3 tools
>> are out on the torrent sites.  I will be trying to use some other tools I
>> found, will reply with results.
> You may need to use dd to overwrite the partiton table/mbr of the drive, but 
> this would not be good if you ever wanted to use that Passport drive and its 
> tools on a Mac or Windows box. If the partition is similar to the U3 junk 
> found on some flash drives, it will be pesky to impossible to remove.
> The better way would be to have your system ignore it in Linux. This bug 
> report shows that this issue has been recognized and patched in Lucid,
> https://bugs.edge.launchpad.net/ubuntu/+source/udisks/+bug/474790
>  from reading it, it looks like you could use the Lucid udev rules files 
> mentioned in the report to do this in Karmic. Clear directions can be found 
> here:
> http://ubuntuforums.org/showthread.php?t=1381228

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