<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Aug 4, 2013, at 3:09 PM, bvl wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">I get lines like this in the boot messages<br>'sd 4:0:0:0: [sdc] No Caching mode page present<span class="Apple-converted-space"> </span></span></blockquote></div><br><div>USB flash drives don't have cache so the kernel will put them into write through mode.</div><div><br></div><div>I've ran across some realtek reader issues where running:</div><div><br></div><div>modprobe ums_realtek ss_en=0</div><div><br></div><div>would fix the issue.</div><div><br></div><div>Is your issue with a reader or something else? Do you have an option to specify ss_en=0 or such?</div><div><br></div><div>Sincerely,</div><div><br></div><div>WIlliam Harrington</div></body></html>