Recommendations on cloning a bootable main disk

[Bruce Labitt]

Thanks for everyone's suggestions! Sometimes one misses the obvious.

Bruce

On 12/1/18 1:50 PM, Mac wrote:
> Umm...make a bootable usb stick, boot from that and do the dd?
>
> On Sat, Dec 1, 2018 at 12:51 PM Bruce Labitt 
> <bruce.labitt at myfairpoint.net <mailto:bruce.labitt at myfairpoint.net>> 
> wrote:
>
>     It' apparent that one uses a variant of dd.  What isn't apparent
>     is how
>     one goes about cloning one's primary disk (active).  From
>     searching it
>     appears it is not recommended to use dd when the disk is active,
>     either
>     the source or the destination.
>
>     I'm trying to clone my nearly full SSD with the OS (Ubuntu 18.04)
>     to a
>     new larger SSD.
>
>     Is there a tiny linux I can boot into that I can run dd from? Or
>     can I
>     make the main disk ro?  What do you suggest?
>
>     I have backed up home.  I really don't want to re-install the OS,
>     since
>     I have had troubles with gdm3 screwing up (different topic). (Black
>     screen, no consoles)
>
>     Recommendations/recipes on the cloning process sought.
>
>     I was simply going to use
>
>     # dd if=/dev/sda of=/dev/sdc bs=4096 conv=sync,noerror
>
>     I've seen lots of comments about block size and optimal setting,
>     but I'm
>     not sure what is optimal if there are unknown (but few) source
>     drive errors.
>
>     Thanks,
>
>     Bruce
>
>
>     _______________________________________________
>     gnhlug-discuss mailing list
>     gnhlug-discuss at mail.gnhlug.org <mailto:gnhlug-discuss at mail.gnhlug.org>
>     http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.gnhlug.org/pipermail/gnhlug-discuss/attachments/20181201/e3ef4e7f/attachment.html