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steve1515
Premium
join:2000-08-07
Peabody, MA

reply to Steve

Re: Copy Files Ignoring Errors

Here's the plan...
Boot into a live CD like Parted Magic and use ddrescue to go from old drive to new drive.
They told me that the old drive has about 4GB of data. The new drive I have is 18GB in size.
After that's done they want a clone of the new drive to another new drive. I figure that I can just use the same method...like Steve said...it should be fast.

Hope it all works out!


bgrundy

join:2002-01-25
Sykesville, MD

reply to Steve

said by Steve:

...so going from one drive to another is likely to be far faster
How so? If you are dealing with bad media on the source drive, and using proper recovery tools, then the bottleneck is not going to be your destination at all. At what point would you have to "wait on the destination drive" if writing to a file vs. a physical disk? Are you talking about OS level block caching?

said by Steve:

If the source drive is quite small, this matters less, but when dealing with errors, the ability to keep retrying while copying to target media, is a big win.
How does that change by writing to a destination file rather than a physical drive? "Retrying" occurs at the source, not the destination.

(Hopefully my tone does not come across as argumentative. I'd like to get a grip on what you're talking about here. I've read some of your tech tips in the past, and they're very useful. I'm just not getting your point here.)
--
"If you continue to use Windows, your system may become unstable" --BSOD


bgrundy

join:2002-01-25
Sykesville, MD

reply to steve1515

said by steve1515:

Hope it all works out!
Good luck! Let us know how it goes...Recoveries can be a great learning experience. It will be interesting to see how many skipped blocks you end up with, and what your actual file recovery rate is afterwards.

Good Hunting!
--
"If you continue to use Windows, your system may become unstable" --BSOD


steve1515
Premium
join:2000-08-07
Peabody, MA

reply to steve1515
UPDATE: I was able to move the drives into another computer and use parted magic with ddrescue to clone the bad drive to two new ones. Using the original PC didn't work with parted magic for some reason.
There were only 4 errors and that was about 2KB in size.
ddrescue is a great tool!

Now I'm just waiting one someone so that we can test it out in the production machine.

I'll let you all know how that goes.

Thanks for all the help!



steve1515
Premium
join:2000-08-07
Peabody, MA

reply to steve1515
UPDATE: Plugged it in, and it worked!

Everyone: Thanks for the help!


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