[ale] how long will it take?

[Aditya Srinivasan]

On Thu, 4 Nov 2004, James P. Kinney III wrote:

> On Thu, 2004-11-04 at 12:02, Scott Castaline wrote:
> > Depends if your drive(s) are SCSI or IDE?
> 
> Since it's hda, its IDE.
> 
> read/write block-by-block of the same drive will take a while. Figure
> 20-30 minutes. I did a 40G drive to a new drive on a seperate IDE
> controller. That took 45 minutes (with read errors from the dying
> drive).

Agree, in addition ...
I've usually read about it being used as :

dd if=/dev/hda1  of=/dev/hda2 bs=100000 count=100000000

Specify the number of bytes to be read at a time, and a very large count 
so you read in all the bytes.
Tweak bs for optimal performance.

-- 
Thanks,
sriad