<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style></head><body style="word-wrap:break-word"><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto"><br></div> <br> <div id="bloop_sign_1479773268975579136" class="bloop_sign"></div> <br><p class="airmail_on">On November 21, 2016 at 17:31:09, tom (<a href="mailto:thomas.w.cranston@gmail.com">thomas.w.cranston@gmail.com</a>) wrote:</p> <div><blockquote type="cite" class="clean_bq" style="font-family:Helvetica,Arial;font-size:13px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span><div><div></div><div>Is there a command line to check blank DVD (or CD) Media for<span class="Apple-converted-space"> </span><br>imperfections before burning?<span class="Apple-converted-space"> </span></div></div></span></blockquote></div><p>Not that I'm aware of. The media is blank. Being a write-once medium, there's literally nothing on it until you write something to it. There's nothing to read, and a write test is destructive.</p><div><div><blockquote type="cite" class="clean_bq" style="font-family:Helvetica,Arial;font-size:13px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span><div><div>I used k3b to copy DVD. That went well until halfway through the burn I<span class="Apple-converted-space"> </span><br>got message that the media was bad. I then had to start all over and<span class="Apple-converted-space"> </span><br>copy the original again. Thankfully the next blank DVD was good.<span class="Apple-converted-space"> </span></div></div></span></blockquote></div><p>That happens. You can reduce the risk of failure, saving yourself time and aggravation, by purchasing writable media made by name brand outfits (ie Verbatim, Memorex, etc). The cheap off-brand stuff comes with a greater risk that the write will fail and you'll get a coaster.</p><p>By the way, the same is true of multi-write flash media like SD cards. The old adage "you get what you pay for" has always held true for me in these spaces.</p></div></body></html>