Re: pulled drive before unmounted

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Author: Michael via PLUG-discuss
Date:  
To: Main PLUG discussion list
CC: Michael
Subject: Re: pulled drive before unmounted
Thank You gentlemen. I'll get to this as soon as I get home. Thank you so
much for your help.

On Thu, Nov 7, 2024, 2:46 PM Rusty Carruth via PLUG-discuss <
> wrote:

> gparted, Under the 'Device/Attempt data rescue' dropdown can attempt to
> find things. Don't think it can recover, but it can mount them so you
> can copy off.
>
> Backing up a bit, first let me explain a bit about the icon (or at
> least, what I think you're talking about)
>
> So, some systems, when they detect a mountable partition, will put an
> icon on the desktop that allows you to click (double-click? whatever)
> it and get the partition mounted.
>
> A partition which is already mounted is, by definition, not mountable
> (slight white lie). So, that same system (should) remove the icon since
> the partition is not mountable.
>
> So, that's why the icon goes away when you mount it manually.
>
> So, don't let that distract you from the major quest, which I believe is
> to make the partition 'work normally'.
>
> First, when you mount it from the command line, do you get a warning of
> some kind?
>
> If not, type 'mount |less' (or, if you just mounted say /dev/sdb1, say
> 'mount | grep sdb1') and find your device - does it say ro or rw
> somewhere? RO means read-only, RW means read-write. I'm guessing your
> device will show RO and not RW.
>
> (here's my /dev/sdb2, mounted normally:
>
> /dev/sdb2 on /home type ext4 (rw,relatime,errors=remount-ro)
>
> Note the rw. Mounted 'badly' would be:
>
> /dev/sdb2 on /home type ext4 (ro,relatime,errors=remount-ro)
>
> Before you proceed, I highly recommend doing an image backup of the
> device. If you have space on your hard disk, do the following unmount
> the partition (again, let's say it is /dev/sdb1), then make the image
> copy: dd if=/dev/sdb | gzip > my.device.backup.dd.gz
>
> This uses DD (HIGHLY recommend you check out ddrescue as a better
> alternative!!!!!) to copy, bit-for-bit, everything on the device
> /dev/sdb (note the whole device, not the partition. You can also copy
> just the partition, which may be useful for other things, by using the
> partition (/dev/sdb1) instead of the device). By not giving dd an 'of='
> argument it sends the data to standard output, which you then compress
> and put into the backup file. If the worst happens and your recovery
> efforts destroy the data on the device, you can restore it. One reason
> for ALSO saving just the partition is that you can create a partition
> somewhere on a disk and write that partition image there...
>
> Ok, so you've got your backup. You can try fsck and whatever else
> (someone says that 'disk drill press kit' can do wonders, I have not
> tried it myself) to try to fix the problem. A lot depends upon what
> mount said when you mounted it manually.
>
> Worst case, copy all the files off the device. Make sure everything is
> there... then either get a new drive and put the data on it, or
> reformat the old one. I tend to keep old drives in that state laying
> around, but then if you did the image backup with dd you have, in
> effect, the original device just without the hardware...
>
> Hopefully enough of that made sense to get you going!
>
> On 11/7/24 09:03, Michael via PLUG-discuss wrote:
> > No luck. I did that and it is just running me around by the balls. I can
> > mount and view the files from the terminal but not the GUI. When I mount
> > the drive the icon disappears and when I double click the icon I get the
> > original error message.
> >
> > On Thu, Nov 7, 2024 at 8:10 AM <> wrote:
> >
> >> Hi Mike,
> >>
> >> Have no idea what you are dealing with.
> >>
> >> I went to https://chatgpt.com/
> >>
> >> And entered "bad superblock...., missing codepage or helper program, or
> >> other error".
> >>
> >> Chat responded with a bunch of information. Enter at your own risk.
> >>
> >> Keith
> >>
> >>
> >>
> >>
> >> On 2024-11-07 06:03, Michael via PLUG-discuss wrote:
> >>> it says '... bad superblock...., missing codepage or helper program,
> >>> or other error'. it's probably the superblock and if I remember right
> >>> that can be fixed. Can someone tell me how to do so?
> >>>
> >>> On Thu, Nov 7, 2024 at 7:55 AM Michael <> wrote:
> >>>
> >>>> I screwed up. I clicked the unmount button, waited a couple of
> >>>> seconds, and then pulled the drive. Well, the unmount hadn't
> >>>> completed! I plugged the drive in but it won't open. OOpS! Anything
> >>>> I can do to save the drive and the information on it?
> >>> --
> >>>
> >>> :-)~MIKE~(-:
> >>> ---------------------------------------------------
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> >
> >
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