Its so slow that it took literally days to install the new OS, just waiting on the progress bar. I did everything you did, as well as completely reinstalling the OS and erasing my HD. Getting an SSD for this system is not a bad thing! I would just go with a smaller one 256 or 500 GB and upgrade it to at least 8GB of RAM to make is usable. My MacBook Pro is 18 months old and my hard drive is failing as well. ![]() Hopefully you can get the external drive going so you can at least validate the system is OK. The reason you want this file is the older ones have an expired certificate too! Here’s a bit more If you've got an old macOS install image, it will probably stop working today So you’ll need to fool the OS installer by back dating your system manually to the OS installer doesn’t know the true date! I would just go with a newer version that has the correct certificate I would go with Sierra as being the best for your system.Ĭreate an OS installer following this guide How to create a bootable macOS Sierra installer drive You’ll want this image How to upgrade to macOS Sierra jump down to Step 4 to get the link. Go back into OS recovery and this time go the menu to select Disk Utility and reformat your external drive to GUID Journaled.īut we still have a problem! Apple’s certificates on the older OS’s have not be updated! This is where the recovery partition or Internet recovery will fail. The first is the drive you have connected externally format may not be compatible with OS-X’s need.
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