<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1429390614496_3637"><span style="font-family: Arial; font-size: small;" id="yui_3_16_0_1_1429390614496_6992">On Saturday, April 18, 2015 2:00 PM, Fernando Lopez-Lezcano <nando@ccrma.Stanford.EDU> wrote:</span><br></div><div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_1_1429390614496_3681" style="display: block;"><div id="yui_3_16_0_1_1429390614496_3680"><div id="yui_3_16_0_1_1429390614496_3679"><div dir="ltr" id="yui_3_16_0_1_1429390614496_3683" style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 16px;"> </div> <blockquote style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 16px; border-left-width: 2px; border-left-style: solid; border-left-color: rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;" id="yui_3_16_0_1_1429390614496_3678"><br></blockquote><blockquote style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 16px; border-left-width: 2px; border-left-style: solid; border-left-color: rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;" id="yui_3_16_0_1_1429390614496_3968"><div class="y_msg_container" id="yui_3_16_0_1_1429390614496_3781">On 04/17/2015 07:15 PM, Len wrote:<div class="yqt1982366442" id="yqtfd21541"><br clear="none">> Hi,<br clear="none">><br clear="none">> I recently installed Fedora 21 on a new system. After installing the<br clear="none">> planetccrma core packages, attempting to boot the realtime kernel gives<br clear="none">> the following:<br clear="none">><br clear="none">> error: /vmlinux-3.18.9-201.rt5.1.fc21.ccrma.x86_64+rt has invalid<br clear="none">> signature.<br clear="none">> error: you need to load the kernel first.<br clear="none">><br clear="none">> Press any key to continue...<br clear="none">><br clear="none">> Has anyone else seen this, or know what causes it?</div><br clear="none"><br clear="none">Hi Len,<br clear="none"><br clear="none">You are booting with a UEFI secure boot enabled.<br clear="none"><br clear="none">I found this online that explains things a bit:<br clear="none"><a shape="rect" href="http://docs.fedoraproject.org/en-US/Fedora/18/html-single/UEFI_Secure_Boot_Guide/" target="_blank" id="yui_3_16_0_1_1429390614496_3786">http://docs.fedoraproject.org/en-US/Fedora/18/html-single/UEFI_Secure_Boot_Guide/</a><br clear="none"><br clear="none">The short story is that your BIOS only allows you to boot "secure" <br clear="none">operating systems. Microsoft of course can sign their stuff and allow it <br clear="none">to run in those machines. Fedora eventually got this to work - I don't <br clear="none">remember the details now, but I don't have the ability to sign my <br clear="none">kernels with the proper credentials. So you have to disable this in your <br clear="none">BIOS.<br clear="none"><br clear="none">This is all for "security"[*]<br clear="none">-- Fernando</div></blockquote><div id="yui_3_16_0_1_1429390614496_3679"><br></div><div id="yui_3_16_0_1_1429390614496_3679" dir="ltr">Thanks, Fernando. I eventually figured out that it was related to secure boot. I was finally able to disable secure boot in the BIOS (by saving/backing up and then deleting the 'keys').</div><div id="yui_3_16_0_1_1429390614496_3679" dir="ltr"><br></div><div id="yui_3_16_0_1_1429390614496_3679" dir="ltr"><br></div><blockquote style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 16px; border-left-width: 2px; border-left-style: solid; border-left-color: rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;" id="yui_3_16_0_1_1429390614496_4435"><div class="y_msg_container" id="yui_3_16_0_1_1429390614496_3781"><br clear="none">[*] but I bet that eventually it will mean you will not be able to boot <br clear="none">your own operating system on hardware you buy.</div><div class="y_msg_container" id="yui_3_16_0_1_1429390614496_3781"><br></div></blockquote><div id="yui_3_16_0_1_1429390614496_3679" dir="ltr" class="" style="">Hopefully this does not mean that eventually you won't be able to boot your own OS! I would at least hope there would always be a way to disable secure boot...</div><div id="yui_3_16_0_1_1429390614496_3679" dir="ltr" class="" style=""><br class="" style=""></div><div id="yui_3_16_0_1_1429390614496_3679" dir="ltr" class="" style="">Cheers,</div><div id="yui_3_16_0_1_1429390614496_3679" dir="ltr" class="" style="">Len</div><br class="" style=""><blockquote style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 16px; border-left-width: 2px; border-left-style: solid; border-left-color: rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;" id="yui_3_16_0_1_1429390614496_6296"><div class="y_msg_container" id="yui_3_16_0_1_1429390614496_3781">_______________________________________________<br clear="none">PlanetCCRMA mailing list<br clear="none"><a shape="rect" ymailto="mailto:PlanetCCRMA@ccrma.stanford.edu" href="mailto:PlanetCCRMA@ccrma.stanford.edu" id="yui_3_16_0_1_1429390614496_4111">PlanetCCRMA@ccrma.stanford.edu</a><br clear="none"><a shape="rect" href="http://ccrma-mail.stanford.edu/mailman/listinfo/planetccrma" target="_blank" id="yui_3_16_0_1_1429390614496_4108">http://ccrma-mail.stanford.edu/mailman/listinfo/planetccrma</a></div></blockquote><br></div></div> </div></div></body></html>