On 3 May 2025 at 17:20, Tim via users wrote: Subject: Re: recovering back-up. To: Community support for Fedora users <users@lists.fedoraproject.org> Date sent: Sat, 03 May 2025 17:20:54 +0930 Send reply to: Community support for Fedora users <users@lists.fedoraproject.org> From: Tim via users <users@lists.fedoraproject.org> Copies to: home user <mattis...@comcast.net>, Tim <ignored_mail...@yahoo.com.au>
> Tim: > >> There is a "ddrescue" tool with that kind of thing in mind. > > https://www.cgsecurity.org/wiki/TestDisk TestDisk is another program that can look for partitions on disk. testdisk-7.2-2.fc41.x86_64 Is the version I have installed on my Fedora 41. Include both ddrescue and testdisk as part of my G4L project, but only used them a few times. ddrescue-1.28-2.fc41.x86_64 Had a few times where windows would not recognize partitions that Linux would have no problem seeing. What did you use to make the backup?? > home user > > Having looked at the man page, I couldn't make sense of how I should use > > these for this situation. > > See if this page is any different from what you've read, then try > discussing things with people here: > > https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html > > I don't think I've ever used *it*, though. > > I do remember using some recovery tools, long ago, for some drive that > Windows mangled. The problem with data recovery is that often you can > only get partial remains from each file. Which may be good enough for > recovering important bits of some text, but not for direct use of > existing files. > > If you want to attempt to recover from a drive failure (of any kind), > it's important that all subsequent accesses are read-only. Don't let > anything write anything to the drive, that includes new meta data about > when files were accessed. > > There's different approaches to recovering data from a drive with drive > failures as opposed to the computer stuffing it up. > > If the drive is failing, then repeatedly trying to read it until you > recover something is a common approach, bearing in mind that doing > *that* can cause worsening of the failure. > > If you're recovering from a stuff-up, and you presume the drive is fine > but you just want to recover data from it. In that case using dd to do > a direct dump of all the bits to another drive, then attacking that > copy with recovery tools *may* be the way to go (though doing this with > a big drive is difficult). The dump is going to make a clone, a copy > made now should be the same as one made ten minute later, so there's no > point in repeatedly trying to read a non-failed drive to get better > results, and you don't risk anything going wrong with the original > drive. > > Seeing as you said just plugging it into a Windows box but not letting > Windows do it's "format the drive it doesn't recognise" routine was > enough to kill it does kind of suggest the drive may be faulty. > > -- > > uname -rsvp > Linux 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64 > > Boilerplate: All unexpected mail to my mailbox is automatically deleted. > I will only get to see the messages that are posted to the mailing list. > > > -- > _______________________________________________ > users mailing list -- users@lists.fedoraproject.org > To unsubscribe send an email to users-le...@lists.fedoraproject.org > Fedora Code of Conduct: > https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: > https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org > Do not reply to spam, report it: > https://pagure.io/fedora-infrastructure/new_issue +------------------------------------------------------------+ Michael D. Setzer II - Computer Science Instructor (Retired) mailto:mi...@guam.net mailto:msetze...@gmail.com mailto:msetze...@gmx.com Guam - Where America's Day Begins G4L Disk Imaging Project maintainer http://sourceforge.net/projects/g4l/ +------------------------------------------------------------+ -- _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
