<div dir="ltr"><div>Probably only if you're getting read errors on the old device. But I'm not a particular expert.</div><div><br></div><div>Re: using dd at all, the target drive must be at least as big as the source partition. (I'm assuming that everything uses LBA (logical block addressing) these days. In the bad old days we had to worry about the number of heads and sectors: dd would make the copy, but various OSes might not be able to find things.)</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Mar 23, 2021 at 8:01 AM Bruce Labitt <<a href="mailto:bdlabitt@gmail.com">bdlabitt@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Is there a compelling reason to use ddrescue over dd for this? Is gnu ddrescue the preferred choice of the ddrescues?<div dir="auto"><br></div><div dir="auto">Or is this a fool's errand?</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Mar 22, 2021, 11:14 PM Curt Howland <<a href="mailto:Howland@priss.com" target="_blank">Howland@priss.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">-----BEGIN PGP SIGNED MESSAGE-----<br>
Hash: SHA256<br>
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On Monday 22 March 2021, Bruce Labitt was heard to say:<br>
> Since the sizes are "equal", can I just # dd if=/dev/sdb<br>
> of=/dev/sdf bs=1M status=progress and be done with it? Is there<br>
> anything else that I'd need to do to get it to boot?<br>
<br>
Since using dd to copy boot .iso images works, I would assume the boot <br>
record of a hdd would be copied over as well.<br>
<br>
Just an assumption, since that's not something I've ever tried.<br>
<br>
So long as your sdf has nothing on it of consequence, the worst thing <br>
that could happen is failure and you go back to your existing sdb.<br>
<br>
Do say what happens, curiosity abounds. <br>
<br>
Curt-<br>
<br>
- -- <br>
You may my glories and my state dispose,<br>
But not my griefs; still am I king of those.<br>
--- William Shakespeare, "Richard II"<br>
<br>
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