Harold Sinclair wrote:

> Glynn, you said
> 
> If you use dd, ensure that the source partition is mounted
> read-only, and that the target partition is unmounted.
> 
> Why? Can you explain. Thanks, Harold

If you try to duplicate a writeable partition with dd, and the
partition is modified in any way whilst it's being duplicated (e.g. an
extra line written to a log file, or whatever), the resulting
partition may not be valid.

I'm not sure that it's necessary for the target to be unmounted, but
unless I was sure (which I'm not) that the OS can deal with a mounted
partition being modified at the device level (rather than at the
filesystem level), then I'd unmount it just be sure.

-- 
Glynn Clements <[EMAIL PROTECTED]>

Reply via email to