<div dir="ltr">Some time ago I asked some questions of this group about the use of the bs<br>
option<br>
when doing a dcfldd ( dd ) command.<br>
<br>
I finally did some testing and the results are inclusive :)<br>
The input was from my hdrive<br>
the output was to a class 10 SD card.<br>
I'm lead to understand that a class 10 SD card means it is good for writing<br>
large blocks<br>
of data. hmmm.<br>
<br>
<br>
<br>
the data:<br>
[root@lap3 vince]# time dcfldd statusinterval=1<br>
if=/home/vince/Documents/<div class="im">RaspberryPI/2013-05-25-wheezy-raspbian.img<br>
of=/dev/mmcblk0<br>
59200 blocks (1850Mb) written.<br>
59200+0 records in<br>
59200+0 records out<br>
<br>
real 4m47.346s<br>
user 0m0.367s<br>
sys 0m3.198s<br>
[root@lap3 vince]# time dcfldd bs=1M statusinterval=1<br>
if=/home/vince/Documents/RaspberryPI/2013-05-25-wheezy-raspbian.img<br>
of=/dev/mmcblk0<br>
1850 blocks (1850Mb) written.<br>
1850+0 records in<br>
1850+0 records out<br>
<br>
real 4m21.798s<br>
user 0m0.005s<br>
sys 0m2.155s<br>
[root@lap3 vince]# time dcfldd bs=10M statusinterval=1<br>
if=/home/vince/Documents/RaspberryPI/2013-05-25-wheezy-raspbian.img<br>
of=/dev/mmcblk0<br>
185 blocks (1850Mb) written.<br>
185+0 records in<br>
185+0 records out<br>
<br>
real 4m27.242s<br>
user 0m0.002s<br>
sys 0m2.723s<br>
[root@lap3 vince]# time dcfldd statusinterval=1<br>
if=/home/vince/Documents/RaspberryPI/2013-05-25-wheezy-raspbian.img<br>
of=/dev/mmcblk0<br>
59200 blocks (1850Mb) written.<br>
59200+0 records in<br>
59200+0 records out<br>
<br>
real 4m27.547s<br>
user 0m0.276s<br>
sys 0m1.978s<br>
[root@lap3 vince]#<br>
-----------<br>
Vince</div></div>