Date: Mon, 16 Apr 2018 12:24:42 -0400 From: Ernie Luzar <luzar722@gmail.com> To: Polytropon <freebsd@edvax.de> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: ntfs HD with io errors Message-ID: <5AD4CE4A.5020408@gmail.com> In-Reply-To: <20180416163812.ed284db3.freebsd@edvax.de> References: <5AD4AE2A.80400@gmail.com> <20180416163812.ed284db3.freebsd@edvax.de>
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Polytropon wrote: > On Mon, 16 Apr 2018 10:07:38 -0400, Ernie Luzar wrote: >> Have a 3TB ntfs HD with i/o errors. >> >> ntfs-3g does read it, but a ls command of 2 different directories get >> error msg about i/o errors and nothing is listed. >> >> Is there a way to fsck this HD to fix it? > > This depends on the actual reason for the error message. > As it has been suggested, Spinrite can do a great job > to "re-activate" broken disks, at least for copying > their content once. Also check the tools in "ntfsprogs", > one might be able to repair the file system... but I/O > errors often indicate hardware failure. Have you tried > to get a smartctl report for the disk yet? > > > >> There is only 600GB of data on the 3TB HD. Looking for way to copy the >> data to a 1TB ufs HD. > > > >> What will dump command do with i/o errors? > > With dump, you can only process UFS file systems (as > input); NTFS does not support it. > > > >> Can dd command skip over unused space? > > I think it can. You can also try dd_rescue or ddrescue > which can handle I/O errors much better than stock dd, > for example by using a dynamically adjusted block size > for reading, or performing several attempts on a failed > block. > > > >> Any other ideas? > > Find out if you have a hardware error or a filesystem > inconsistency. > > Oh, and give Spinrite a try, it's really a great tool. > Why isn't it on my list?! ;-) > > In worst case, use magicrescue to get at least the data, > in case you might not be able to get the sorting information > (directory hierarchy and file systems lost). > > > > Spinrite is a $90 utility. All the documentation is for xp fat32 HD and uses an a:floppy drive to boot msdos from. Sent them a email about outdated documentation. Got reply saying no purchasers in many years so not going to update their documentation. Sure sounds like a dead product to me. Since the mbr was deleted looks like win10 got a malicious virus that made the external usb HD un-mountable and screwed with the last file I had open. Nothing physically wrong with the HD. All ready used dd_rescues and recovered 50% of user data which had no i/o errors. dd_rescue could not fix any of the i/o errors. Read the man on dd and found no mention of skipping "free space" IE; unused space in the allocated partition. Only 600gb of data on the 3tb HD. Looking for method to copy this data to 1tb HD bypassing i/o errors.
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