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Date: Sun, 13 Jan 2013 08:59:10 +0100
From: marco atzeri <marco DOT atzeri AT gmail DOT com>
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Subject: Re: how do I clone a drive in cygwin?
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On 1/13/2013 6:23 AM, Marilo wrote:
> from /cygdrive
>
> i haven't done it before in linux either, so maybe i'm making an elementary error.
>
> howcome it fails here with dd and cat?
>
> $ dd if=/cygdrive/g of=/cygdrive/c/crp/test.img
> dd: reading `/cygdrive/g': Is a directory
> 0+0 records in
> 0+0 records out
> 0 bytes (0 B) copied, 0.00542876 s, 0.0 kB/s
>

/cygdrive/c is not the physical drive but a mount point.

look at

$ ls -l /dev/sd*

On my system

$ ls -l /dev/sd*

brw-rw-rw- 1 marco Administrators 8,  0 Jan 13 08:21 /dev/sda
brw-rw-rw- 1 marco Administrators 8,  1 Jan 13  2013 /dev/sda1
brw-rw-rw- 1 marco Administrators 8, 16 Jan 13  2013 /dev/sdb
brw-rw-rw- 1 marco Administrators 8, 17 Jan 13  2013 /dev/sdb1

/dev/sda is disk C: and /dev/sdb is the disk E:


Asssuming you G drive is a USB stick, the easy way to identify
the right sdX is to use

$ ls -l /dev/sd*
  before and after the connection of the stick

Regards
Marco




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