Thanks a lot for clarifying!<br><br>I also think it would be nice to notice this behaviour clearer in documentation. man dd says almost nothing about. info dd says about &#39;short reads&#39; but it seems not so easy to understand what it means. &#39;dd&#39; is populary utility in scripts so many people can bumb into this behaviour. As for me it took two months to catch &#39;slow&#39; problem with our tape drive.<br>
<br>PS: Is it good work around that I mentioned before (I mean &#39;ibs=256K obs=256K&#39;) or it can be changed in future?<br><br>Best regards,<br>Stanislav<br>