Re: dd limit???

[Robert Citek <robert.citek@gmail.com>]

On Wed, Jun 8, 2011 at 6:36 AM, Robert G. (Doc) Savage
<dsavage@peaknet.net> wrote:
> I'm puzzled. I've never seen a raw utility failure like this. dd is a
> standard forensic tool that's been used reliably for many years. This
> application does a bit-by-bit copy of partitions and MBR for later bare
> metal restoration, should the "yum update" method fail for F15.

Not likely a limitation of dd as I was able to create a 200 GB image using dd:

$ foo () { dd if=/dev/zero of=zeros bs=1M count=${1:-1} ; sync ; } ;
sync ; time -p foo 200000
200000+0 records in
200000+0 records out
209715200000 bytes (210 GB) copied, 2701.33 s, 77.6 MB/s
real 2704.06
user 0.45
sys 447.69

$ ls -la --si zeros
-rw-r--r-- 1 rwcitek rwcitek 210G 2011-06-08 02:03 zeros

$ dd --version
dd (coreutils) 7.4

Is it possibly a limitation of the USB converter?  Or something
defective in the drive?

Regards,
- Robert

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