![]() ![]() Here’s the image file for Sierra How to upgrade to macOS Sierra Jump to Step 4 for the direct link. ![]() But I think its just wiser to get to Sierra as being the best OS for these older MacBook Pro’s which have SATA drives and APFS has issues with SATA (HDD or SSD) If you still have the Lion OS installer there is a way to install it by back dating your system so the certificate check passes. This is useful for doing a clean install (which is recommendable to do every 6 months or so), or for keeping a reusable installer handy to use on other machines. Apple is no longer maintaining the older OS certificates so you are doomed trying to re-install Lion from the recovery partition. Install Disk Creator turns a USB stick or other media into a bootable macOS installer. How to create a bootable macOS Sierra installer driveĪpple messed up on the OS installer images certificates so your old image may not work! If you've got an old macOS install image, it will probably stop working today Thats when messed you up with the Lion install. So you’ll need to either download and setup a bootable Sierra OS installer or using Disk Utility wipe your drive down and setup with GUID - APFS Also make sure you delete all of the volumes on your drive. It sounds like your system requires Sierra (HFS+) Vs High Sierra (APFS) volume to install.
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