Thanks David, your response, as well as Timothy's response to my
question as to why use the NTFS tools for a partition-based copy, allude
to the difference between a partition-based clone (sector by sector
copy) vs. a file-system based clone (file by file copy).
For backup recovery purposes, I'm very skeptical of file-based "clones"
because any number of utilities have subtle problems in copying (e.g.,
files with super-restricted permissions such as ownership by "Trusted
Installer," very long full pathnames, odd characters in the file names,
etc.). I have been bitten by this more than once. I stopped using Norton
Ghost about 10 years ago just because of this: I couldn't open their
proprietary (yet another problem) backup file format in their restore
utility because ONE file had a filename that exceeded some length. I
moved on to Image for
On 2019-01-24 4:54 AM, David Morrison wrote:
I think you might be making this too hard, but I am writing this from a
Mac user perspective where if it was a Mac disk, this is what I would
do. I imagine similar tools are available for Windows.
The first thing you would do is to mount the disk image of the failed
disk so it is visible as a file system. This would typically mount the
partitions on that disk image individually. Preferably you would mount
them read only, and there are ways to do that through the command line
on Mac or a utility called Disk Arbitrator.
Having got the partition I wanted accessible from the file system, I
would then Restore it to the correct partition on the new disk using
Disk Utility. (Clonezilla should be able to do this too.)
The advantage of this technique over ddrescue is that you are not
copying block-by-block to the new partition, complete with any weirdness
that contains. Instead you are copying as files, which will copy to the
full new partition rather than just the first 200GB that ddrescue will
copy to. It would also set up boot blocks, etc as they need to be to be
bootable.
This should also clear up any damage to the filesystem, if it can repair
it. But ofc if the C drive is very damaged as you suggest, then you have
to wonder whether it will be capable of doing anything afterwards.
Cheers
David
_______________________________________________
Bug-ddrescue mailing list
[email protected]
https://lists.gnu.org/mailman/listinfo/bug-ddrescue
