On Thu, 28 Jan 2021 at 11:09, GianPiero Puccioni <gianpiero.puccioni@xxxxxxxxxx> wrote:
On 1/27/21 3:23 PM, George N. White III wrote:
> On Wed, 27 Jan 2021 at 05:17, GianPiero Puccioni <gianpiero.puccioni@xxxxxxxxxx
> <mailto:gianpiero.puccioni@xxxxxxxxxx>> wrote:
>
> Hi,
>
> yesterday my laptop with F32 didn't boot.
> It goes in emergency mode and creates a rdsosreport file
>
> I usually don't do this but this time when I installed F I let the system create
> the partitions and I think it's LVM with XFS but I'm not sure of the latter and
> I am not familiar with this method.
>
> Is there something to do to try to recover something about this, like the
> files from /home as of course the USB stick I used for backups went crazy too
> and I could recover only a fraction of it. It doesn't seem that it was the HD
> that want all bad as the Win10 partition still works.
>
>
> Often a spinning disk will have a small region that goes bad, so nearly all the
> data can be recovered using ddrescue or similar tools. Older spinning disks
> have less precise head positioning and become more sensitive to temperature
> extremes, so here in Canada, disk errors sometimes disappear if you let a cold
> system warm up for a few hours.
>
Thanks for the answer.
I'll try with ddrescue I suppose on /dev/sda7, I saw that it creates a file with
the image how do I use this file? Is there a way to recover the LVM partitions?
I normall use ddrescue on the raw disk to create a clone on another (usually larger)
drive. There are lots of docs that explain the process.
looks reasonable.
> You should try to sort out the backups in case ddrescue fails.
Yes, I was able to recover part of an older backup so not everything is lost...
> There are disk errors in the journalctl file (the rdsosreport also has journalctl
> output). I would check for a loose cable and use ddrescue to create a
> copy of the raw drive on a new drive. One of the messages is:
>
I don't think the cable is a problem as the Win partition is OK but I'll see if
I can check that (not easy in a laptop).
If nobody has been inside the laptop the cable is probably OK, but google
for the same model as there have been models sold with defective cables.
At work we had a batch of desktops that came with cables that lost spring
tension in the drive cables after a couple years. The cable would actually
fall off when the drive connector when systems were moved to another
location or used at sea (the N. Atlantic can get bumpy).
George N. White III
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