On Thu, 28 Jan 2021 at 11:09, GianPiero Puccioni < gianpiero.pucci...@isc.cnr.it> wrote:
> On 1/27/21 3:23 PM, George N. White III wrote: > > On Wed, 27 Jan 2021 at 05:17, GianPiero Puccioni < > gianpiero.pucci...@isc.cnr.it > > <mailto:gianpiero.pucci...@isc.cnr.it>> 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. GNU ddrescue – The Best Damaged Drive Rescue - Linux.com <https://www.linux.com/topic/desktop/gnu-ddrescue-best-damaged-drive-rescue/> 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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