<div dir="ltr"><div>I've looked at this before. To my knowledge, there is not a really good solution.</div><div>Kees Cook described the problem and some options <br></div><div><a href="https://outflux.net/blog/archives/2018/04/19/uefi-booting-and-raid1/">https://outflux.net/blog/archives/2018/04/19/uefi-booting-and-raid1/</a> .</div><div><br></div><div>It'd be nice if there was a supported "right way" to do this.<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Aug 10, 2019 at 9:47 PM Leroy Tennison <<a href="mailto:leroy@datavoiceint.com">leroy@datavoiceint.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> <div dir="ltr"> <div id="gmail-m_7452791668225478034divtagdefaultwrapper" style="font-size:12pt;color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif" dir="ltr"> <p style="margin-top:0px;margin-bottom:0px">I have tried unsuccessfully so far to set up software RAID 1 while installing 16.04 or 18.04. I was able to get install to finish a 16.04 install by manually creating a EFI partition during the process but the system won't boot (HP DL380 Gen 10). In doing research I'm seeing that the EFI specification doesn't address mirroring. However, references were in the Ubuntu 12.04 era.</p> <p style="margin-top:0px;margin-bottom:0px"><br> </p> <p style="margin-top:0px;margin-bottom:0px">Is this still true? Can I have both EFI boot and RAID 1 for the EFI partition?</p> <p style="margin-top:0px;margin-bottom:0px"><br> </p> <p style="margin-top:0px;margin-bottom:0px">If the install is successful are there things I can check/correct to get a successful boot?</p> <p style="margin-top:0px;margin-bottom:0px"><br> </p> <p style="margin-top:0px;margin-bottom:0px">This is being set up for a customer at a remote site, is it even advisable to do RAID 1 on UEFI or is it best to do legacy BIOS for support reasons.</p> <p style="margin-top:0px;margin-bottom:0px"><br> </p> <p style="margin-top:0px;margin-bottom:0px">Thanks for your help.</p> </div> <p id="gmail-m_7452791668225478034c1-id-7" style="font-size:0px;font-family:Arial;color:rgb(255,255,255)">Harriscomputer</p> <table id="gmail-m_7452791668225478034c1-id-8" style="border-width:0px;padding:0px;margin:0px"> <colgroup id="gmail-m_7452791668225478034c1-id-9"> <col id="gmail-m_7452791668225478034c1-id-10"></colgroup> <tbody id="gmail-m_7452791668225478034c1-id-11"> <tr id="gmail-m_7452791668225478034c1-id-12"> <td id="gmail-m_7452791668225478034c1-id-13"> <table id="gmail-m_7452791668225478034c1-id-14" style="height:0px;width:100%" cellspacing="0" cellpadding="0" border="0"> <colgroup id="gmail-m_7452791668225478034c1-id-15"> <col id="gmail-m_7452791668225478034c1-id-16"> <col id="gmail-m_7452791668225478034c1-id-17"> <col id="gmail-m_7452791668225478034c1-id-18"></colgroup> <tbody id="gmail-m_7452791668225478034c1-id-19"> <tr> <td style="height:25px;width:99%" colspan="3" valign="middle"> <p style="font-size:10pt;font-family:ARIAL" align="center"><strong><span style="font-size:11pt">Register now for the dataVoice User Conference</span>, <br style="font-size:11pt">October 9-11 at the Gaylord Rockies in Denver, CO.</strong> <br><strong>To register click </strong><a style="font-size:11pt" href="https://www.harriscomputer.com/en/events/" target="_blank"><strong style="font-size:11pt">Here</strong></a></p></td></tr> <tr id="gmail-m_7452791668225478034c1-id-27"> <td id="gmail-m_7452791668225478034c1-id-28" style="width:33%"> <p style="font-size:10pt;font-family:Arial" align="left"><b id="gmail-m_7452791668225478034c1-id-30"><font id="gmail-m_7452791668225478034c1-id-31" face="Arial">Leroy Tennison<br id="gmail-m_7452791668225478034c1-id-32"></font></b><font id="gmail-m_7452791668225478034c1-id-33" size="2" face="Arial">Network Information/Cyber Security Specialist<br id="gmail-m_7452791668225478034c1-id-38"><span id="gmail-m_7452791668225478034c1-id-39" style="font-size:8pt">E: <a href="mailto:leroy@datavoiceint.com" target="_blank">leroy@datavoiceint.com</a></span></font></p></td> <td id="gmail-m_7452791668225478034c1-id-40" style="width:33%"> <p style="font-size:10pt;font-family:Arial;text-align:center" align="center"><br id="gmail-m_7452791668225478034c1-id-43"><img border="0"></p></td> <td id="gmail-m_7452791668225478034c1-id-45" style="width:33%"> <p id="gmail-m_7452791668225478034c1-id-46" style="font-size:10pt;font-family:Arial;text-align:right" align="right"><font id="gmail-m_7452791668225478034c1-id-47" style="font-size:8pt" face="Arial">2220 Bush Dr<br id="gmail-m_7452791668225478034c1-id-48">McKinney, Texas<br id="gmail-m_7452791668225478034c1-id-49">75070<br><font id="gmail-m_7452791668225478034c1-id-51" style="font-size:8pt" face="Arial"><a href="http://www..com" target="_blank">www.datavoiceint.com</a></font></font><font id="gmail-m_7452791668225478034c1-id-56" size="3"> </font></p></td></tr></tbody></table> <table id="gmail-m_7452791668225478034c1-id-57" style="width:100%" cellspacing="2" border="0"> <colgroup id="gmail-m_7452791668225478034c1-id-58"> <col id="gmail-m_7452791668225478034c1-id-59"> <col id="gmail-m_7452791668225478034c1-id-60"> <col id="gmail-m_7452791668225478034c1-id-61"></colgroup> <tbody id="gmail-m_7452791668225478034c1-id-62"> <tr id="gmail-m_7452791668225478034c1-id-63"> <td id="gmail-m_7452791668225478034c1-id-64" colspan="3"> <p id="gmail-m_7452791668225478034c1-id-65" style="margin-bottom:0px;font-size:10pt;font-family:Arial;margin-top:0px"><font id="gmail-m_7452791668225478034c1-id-66" size="1" face="Arial">This message has been sent on behalf of a company that is part of the Harris Operating Group of Constellation Software Inc. 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