mklein49 Posted December 22, 2015 Share Posted December 22, 2015 (edited) Hi Folks, I'm attempting to properly configure a UEFI dual boot system (Windows 10 and El Capitan). My desire was to have a one disk dedicated to Windows 10 and another for El Capitan. I currently have that setup. I did clean installs for each OS to their respective disk. As a result, I have the windows created EFI partition on disk 0 and OS X EFI partition on disk 1. I have the windows os loader installed into the EFI partition on disk 0 and Clover onto disk 1. I can boot either OS by selecting the appropriate partition from my boot menu in my UEFI boot menu. I'm left with two problems, however. I'm not able to boot the Windows 10 OS from Clover and I'm getting extra EFI entries into my UEFI firmware. I'm thinking the correct approach is to consolidate EFI partitions and install the windows loader and clover loader side by side. I would like disk0 (Windows Disk) to contain the "active' EFI Partition. My questions are as follows: Is there a setup which would allow me to have multiple EFI partitions and not have the extra EFI entry added to my UEFI firmware? If not, should I drop down to a single EFI partition? Can I install Clover to the Windows created EFI Partition and have each loader coexist happily? Partition setup: /dev/disk0 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *256.1 GB disk0 1: Windows Recovery 471.9 MB disk0s1 2: EFI NO NAME 104.9 MB disk0s2 3: Microsoft Reserved 16.8 MB disk0s3 4: Microsoft Basic Data 255.5 GB disk0s4 /dev/disk1 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *120.0 GB disk1 1: EFI EFI 209.7 MB disk1s1 2: Apple_HFS OSX Installed 119.2 GB disk1s2 3: Apple_Boot Recovery HD 650.0 MB disk1s3 Thanks, Matt Edited December 22, 2015 by mklein49 Link to comment Share on other sites More sharing options...
bronxteck Posted December 22, 2015 Share Posted December 22, 2015 you can try copying the windows EFI microsoft folder to the root of your clover EFI Link to comment Share on other sites More sharing options...
MacUser2525 Posted December 23, 2015 Share Posted December 23, 2015 3. Clover has always defaulted to installing into the first EFI partition in the system it finds or at least that is what it has done here. Copy/move the clover directory from the second to the first and it should work, move if you want only the one entry. The solution to 1. is not to have multiple copies of the boot loaders in multiple EFI partitions. For the windows not showing look into your clover config.plist and make sure there is no ignore finding the windows .efi boot loader forget how it is named at the moment but it is in there. Link to comment Share on other sites More sharing options...
mklein49 Posted December 25, 2015 Author Share Posted December 25, 2015 3. Clover has always defaulted to installing into the first EFI partition in the system it finds or at least that is what it has done here. Copy/move the clover directory from the second to the first and it should work, move if you want only the one entry. The solution to 1. is not to have multiple copies of the boot loaders in multiple EFI partitions. For the windows not showing look into your clover config.plist and make sure there is no ignore finding the windows .efi boot loader forget how it is named at the moment but it is in there. Ok, I was curious if it was as simple as copying the files from one of the partitions. I'll try coping the clover files to the Windows created EFI partition. Link to comment Share on other sites More sharing options...
mklein49 Posted December 25, 2015 Author Share Posted December 25, 2015 I ended up copying the Clover files to the disk0s2 partition (windows created EFI partition). This seems to be working. I'm able to booth either Clover or Windows from the UEFI boot manager. In addition, I can boot Windows and El Capitian both from Clover. I still have the EFI partition on disk1s1, so I don't know if that's coming into play at all without my knowledge. My next step is to remove all files from that partition and see if everything still boots. Link to comment Share on other sites More sharing options...
MacUser2525 Posted December 25, 2015 Share Posted December 25, 2015 I ended up copying the Clover files to the disk0s2 partition (windows created EFI partition). This seems to be working. I'm able to booth either Clover or Windows from the UEFI boot manager. In addition, I can boot Windows and El Capitian both from Clover. I still have the EFI partition on disk1s1, so I don't know if that's coming into play at all without my knowledge. My next step is to remove all files from that partition and see if everything still boots. Should as I said clover does not even bother with a second drive it just looks for the first in the system it finds, if you have DPCIManager installed you can look at the boot messages to confirm what clover is doing/where it is finding the files used bdmesg should do it as well. Link to comment Share on other sites More sharing options...
mklein49 Posted December 26, 2015 Author Share Posted December 26, 2015 Should as I said clover does not even bother with a second drive it just looks for the first in the system it finds, if you have DPCIManager installed you can look at the boot messages to confirm what clover is doing/where it is finding the files used bdmesg should do it as well. Ah, I see. I'll take a look at the boot messages if nothing else just for my own better understanding of the boot process. Thanks for the all the help! Link to comment Share on other sites More sharing options...
MacUser2525 Posted December 26, 2015 Share Posted December 26, 2015 Ah, I see. I'll take a look at the boot messages if nothing else just for my own better understanding of the boot process. Thanks for the all the help! Your welcome. Link to comment Share on other sites More sharing options...
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