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Re: Gparted error report

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On Tue, Jan 01, 2019 at 06:07:21AM -0600, Richard Owlett wrote:
> I am trying to modify the partitioning of a 240GB USB connected SSD.
> It was originally created on a laptop running Debian 9.1 which is in
> the shop for cooling problems.
> 
> I attempted to repartition it on a laptop running Debian 8.6 and
> received an error message that the installed revision of e2fsck
> could not analyze the first partition.
> 
> I then tried to perform the repartitioning on a machine I believe to
> be running Debian 9.1.
> 
> *FIRST QUESTION*
> How do I determine just what Debian release is running?

To a first approximation:

  tomas@trotzki:~$ cat /etc/debian_version 
  9.6

Since it's possible to install packages from other releases (cf.
FrankenDebian) or from alien repositories, this is just a first
approximation.

> When I attempted the repartition on the second machine the error report was:
> >GParted 0.25.0 --enable-libparted-dmraid --enable-online-resize
> >
> >Libparted 3.2
> >Shrink /dev/sdc1 from 124.96 GiB to 80.00 GiB  00:00:00    ( ERROR )
> >     	
> >calibrate /dev/sdc1  00:00:00    ( SUCCESS )
> >     	
> >path: /dev/sdc1 (partition)
> >start: 2048
> >end: 262051839
> >size: 262049792 (124.96 GiB)
> >check file system on /dev/sdc1 for errors and (if possible) fix them  00:00:00    ( ERROR )
> >     	
> >e2fsck -f -y -v -C 0 /dev/sdc1  00:00:00    ( ERROR )
> >     	
> >Possibly non-existent device?
> >e2fsck 1.43.4 (31-Jan-2017)
> >e2fsck: No such file or directory while trying to open /dev/sdc1
> 
> It is obviously *NOT* a "non-existent device" as it is readable on
> another machine.

Note that this device doesn't have to be called /dev/sdc* on your
current machine. The kernel just picks whatever /dev/sda, /dev/sdb...
is free and allocates it. Those names are not permanent.

Stick your device into the USB port, and shortly thereafter do an

  tomas@trotzki:~$ sudo dmesg | tail
  [sudo] password for tomas: 
  [  417.445120] scsi host6: usb-storage 3-2:1.0
  [  417.445316] usbcore: registered new interface driver usb-storage
  [  417.447343] usbcore: registered new interface driver uas
  [  418.470251] scsi 6:0:0:0: Direct-Access     SanDisk  Cruzer Blade     1.20 PQ: 0 ANSI: 5
  [  418.471271] sd 6:0:0:0: Attached scsi generic sg1 type 0
  [  418.472287] sd 6:0:0:0: [sdb] 31266816 512-byte logical blocks: (16.0 GB/14.9 GiB)
  [  418.473021] sd 6:0:0:0: [sdb] Write Protect is off
  [  418.473028] sd 6:0:0:0: [sdb] Mode Sense: 43 00 00 00
  [  418.473295] sd 6:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
  [  418.482812] sd 6:0:0:0: [sdb] Attached SCSI removable disk

(I just did that). You see, in my case, the device is called "/dev/sdb".

Just assuming the device name is somewhat dangerous: you might end up
repartitioning (or worse) the wrong one.

> *SECOND QUESTION*
> What is this telling me?

That (most probably) the device didn't end up as /dev/sdc, but possibly as
/dev/sdb (because that name was free). Most probably your other machine
has two block devices, thus /dev/sda and /dev/sdb are already taken.

This is, btw, the reason why nowadays the preferred way is to address
the partitions by UUID.

HTH
-- tomás

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Gparted error report Richard Owlett <rowlett@cloud85.net> - 2019-01-01 13:10 +0100
  Re: Gparted error report <tomas@tuxteam.de> - 2019-01-01 15:10 +0100
    Re: Gparted error report Richard Owlett <rowlett@cloud85.net> - 2019-01-01 18:30 +0100
      Re: Gparted error report <tomas@tuxteam.de> - 2019-01-01 18:40 +0100
        Re: Gparted error report Richard Owlett <rowlett@cloud85.net> - 2019-01-01 19:50 +0100
      Re: Gparted error report Lee <ler762@gmail.com> - 2019-01-01 19:50 +0100
        Sources list, was Re: Gparted error report David Wright <deblis@lionunicorn.co.uk> - 2019-01-02 03:00 +0100
          Re: Sources list, was Re: Gparted error report Richard Owlett <rowlett@cloud85.net> - 2019-01-02 13:00 +0100
            Re: Sources list, was Re: Gparted error report Lee <ler762@gmail.com> - 2019-01-02 18:00 +0100
  Re: Gparted error report Jimmy Johnson <field.engineer@gmail.com> - 2019-01-02 17:10 +0100
  Re: Gparted error report Felix Miata <mrmazda@earthlink.net> - 2019-01-02 17:40 +0100

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