<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>This is by no means my expertise, but booting from a live cd would allow you to make a new partition table and install ubuntu without dual booting. Beyond that I really don't know a lot, you could try setting the drive to mbr, mounting /dev, chroot and grub-install, but I don't know that the efi will boot mbr. mbr depends on the first 512 bytes of the drive being loaded directly into the processor and executed, and I have no idea how EFI works</div><div><br>On Aug 26, 2014, at 16:23, Jason Heeris <<a href="mailto:jason.heeris@gmail.com">jason.heeris@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On 27 August 2014 00:19, <span dir="ltr"><<a href="mailto:nilesrogoff@gmail.com" target="_blank">nilesrogoff@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="auto"><div>The insaller will retain the gpt</div></div></blockquote><div><br></div><div>Good to know, thanks.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="auto"><div>and you will be unable to boot into ubuntu.</div></div></blockquote><div><br></div><div>I realise I won't be able to boot until grub is installed, but since I'll be installing it in a later step, do you know if it's possible to do a "one off" boot into the new system, from the installer?</div>
<div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="auto"><div>I solved this easily with rEFInd. sorry I can't link you I am on mobile.</div>
</div></blockquote><div><br></div><div>I am aware of rEFInd, but I want to avoid it for two reasons:</div><div><br></div><div>1. I'm trying to show that it's not necessary (as per Mike Homney's post), and</div>
<div>2. It seems to be impossible to install rEFInd and *not* dual-boot with OS X[1].</div><div><br></div><div>Cheers,</div><div>Jason</div><div><br></div><div>[1] <a href="https://lists.ubuntu.com/archives/ubuntu-users/2013-August/271071.html">https://lists.ubuntu.com/archives/ubuntu-users/2013-August/271071.html</a> </div>
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