Yep, I tried booting up Snow Leopard with Start up in the Preference Pane, and had the same result. It doesn’t go past the Apple logo screen. I spoke to Apple support and they confirmed what everyone here told me, it won’t work. Thanks to everyone that responded. Gary
> On Jun 16, 2016, at 4:27 AM, Simon Fogarty <si...@blinky-net.com> wrote: > > HI gary, > > I would have to confirm it but I believe with the changes in firmware on your > host machine, you wont run snow leopard from an external drive, > > The other thing you could try is boot up your host machine with the external > drive connected, then go into system preferences and find near the bottom of > the list an option called Start UP Disk, > Go in to this and with el capitan you may have to unlock the start up disk > options, and then select what you have called your snow leopeard external > drive and then tell it to start or should I say restart on to that drive and > see what happens. > > > > -----Original Message----- > From: macvisionaries@googlegroups.com > [mailto:macvisionaries@googlegroups.com] On Behalf Of Gary > Sent: Thursday, 16 June 2016 4:08 AM > To: Macvisionaries <macvisionaries@googlegroups.com>; > macvoiceo...@freelists.org > Subject: need help with external bootable drive > > Hi everyone, > I need a guru. > > Using my 2008 iMac with Snow Leopard installed, I installed Snow Leopard on a > 1TB external drive. I created a GUID partitioned and formatted it as OS X > Extended Journaled. Using the Option key at start up I can boot up using the > external drive. However, I can’t seem to boot up the external drive on my > 2013 iMac nor my 2014 Macbook Pro, both running El Capitan. > > When I start my 2013 iMac or MB Pro, while holding down the option button, my > snow leopard device appears on the list of bootable devices. When I select > it, it proceeds to, the Apple logo screen, but it doesn’t say loading nor can > I see a cursor nor the spinning progress indicator, and it just sits there. > This is true for both systems. Of course, I had sighted assistance with the > visual things. > > Does anyone know what’s happening with my external drive or how I can fix it? > I need Snow Leopard for an old app and want to upgrade my 2008 iMac to > Mavericks, which i’m already in the middle of. > Gary > > -- > The following information is important for all members of the Mac Visionaries > list. > > If you have any questions or concerns about the running of this list, or if > you feel that a member's post is inappropriate, please contact the owners or > moderators directly rather than posting on the list itself. > > Your Mac Visionaries list moderator is Mark Taylor and your owner is Cara > Quinn - you can reach Cara at caraqu...@caraquinn.com > > The archives for this list can be searched at: > http://www.mail-archive.com/macvisionaries@googlegroups.com/ > --- > You received this message because you are subscribed to the Google Groups > "MacVisionaries" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to macvisionaries+unsubscr...@googlegroups.com. > To post to this group, send email to macvisionaries@googlegroups.com. > Visit this group at https://groups.google.com/group/macvisionaries. > For more options, visit https://groups.google.com/d/optout. > > -- > The following information is important for all members of the Mac Visionaries > list. > > If you have any questions or concerns about the running of this list, or if > you feel that a member's post is inappropriate, please contact the owners or > moderators directly rather than posting on the list itself. > > Your Mac Visionaries list moderator is Mark Taylor and your owner is Cara > Quinn - you can reach Cara at caraqu...@caraquinn.com > > The archives for this list can be searched at: > http://www.mail-archive.com/macvisionaries@googlegroups.com/ > --- > You received this message because you are subscribed to the Google Groups > "MacVisionaries" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to macvisionaries+unsubscr...@googlegroups.com. > To post to this group, send email to macvisionaries@googlegroups.com. > Visit this group at https://groups.google.com/group/macvisionaries. > For more options, visit https://groups.google.com/d/optout. -- The following information is important for all members of the Mac Visionaries list. 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