Resizing partitions and copying data with dd

Mike Wooding timmywooding at yahoo.com
Thu Mar 2 00:47:37 UTC 2006



--- "McDougall, Marshall (FSH)" <MarMcDouga at gov.mb.ca> wrote:

> I am trying to move my root mount to a bigger partition without
> tearing
> down the whole machine.  I created a new ext3 partition of 10G.  I
> then
> tried to copy my existing root partition to the new partition using:
> 
>  dd if=/dev/oldroot of=/dev/newroot
> 
> It worked great except my newroot is 2G, not 10.  I tried using
> ext2online but there are some incompatibilities, or so it thinks.
> Anyone have a suggestion on how I can move my root mount to a new 10G
> partition without any catastrophe?  Thanks.

 The "dd" command didn't copy files, it copied the filesystem,
 superblock and all.

 Make a new FS on /dev/newroot mount it and use something like
 cpio (find / | cpio -pmduv /newroot) to copy the files.



He who laughs last thinks slowest.

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