Chosen Solution
Hi! I’m having a problem with my MacBook Pro, I replaced the HDD for a new SSD and when I try to format the drive or install the macOS I get a lot of errors and I can’t install … Things what I’ve tried: I change the hard drive flexI try with another drive Already installed the macOS on another drive and put into the computer. What can be the problem? Thanks — Sorry for my bad english, I’m trying to improve it. Update 20/06/19 I solved my problem with another hard drive cable. To be honest i used this part number connector 821-1480-A and i dont have any problem, finally i install macOS Mojave. So i think this a strange problem… Thank you all for the help and information about the issue!!
Did you use the old SATA cable or replace it? I was told by @danj that some 2012’s use the 2011 cable and it sounds like you have the old cable. This was brought to my attention when I recommended the ‘11/’12 systems as a direct replacement for a SATA II capped MBP. Changing the cable is a good practice anyway since the newer drives overload the original cables and it usually ends up solving the problem anyway. The guide to change the cable can be found here, and the part can be found here. If you do not buy it here, you want the 821-2480-A or 821-2049-A. Anything else cannot be used with modern drives. My additional patch work I am doing to prevent the problem Since I am installing the 821-2049-A into my 2011 13” (couldn’t get the other cable) and I did come up with another way to protect the new cable. The tape I use was rebranded but it’s the same thing. You can only do this to the connector side as it will interfere with the ability to tape it down to prevent it from moving if done on both sides.
Credit goes to @mayer for this photo. Use this fix and mine to help the odds work for you.
Did you format the drive GUID before trying to install the system? What systems are you trying to install?
