I have a 2017 MacBook Pro bought a new hard drive for more space. it shows up on disk utility but when I try to install The operating system no disk shows up. when I go back into disk utility to try to erase it or change it it won’t let me. it’s not highlighted it won’t let me. Also it’s supposed to be a 500 GB why is it only saying 2GB?
MacBook Pro 13″, macOS 10.15
The SSD is not showing up in Disk Utility. Click "View" within Disk Utility and select "Show All Devices" so that physical drives appear on the left pane of Disk Utility. If the SSD does not show up, then you have a bad SSD or the replacement SSD is not fully seated.
The item in your screenshots is from the macOS installer.
My answer & suggestion is still the same as before. The SSD is not showing up in Disk Utility. The "MacOS Base System" is the macOS installer you are using to boot the laptop. You cannot do anything to the "MacOS Base System" image.
I am having the same issue, exactly. How did you solve this? Was using laptop fine last night. I shut it down, which I don’t usually do, and then this happened today.
What do you mean by “completely seated”?
Thank you.
I had 4 pictures up didn’t realize it only shows one. The hard drive does show up in disk utility but it won’t let me erase it or do anything else to it.
This picture shows what what it looks like when I go into the disk Partition.
Thank you!! Yes i looked and it was not completely seated. Hard drive works great now got the newest operating system going and again thank you.
You are welcome. Glad you were able to resolve the issue.
The MacOS base system is only 2GB. That's not a physical drive of any type, at 2GB it would be virtually worthless.
As has been said, your SSD is either damaged or not properly seated. You need to pull it and reseat it firmly but not over forcefully.
Information on the MacOS Base System is rather obtuse to say the least, at least all I could find. I don't think I'd do anything with it for now unless you know precisely what it is. Maybe someone here will chime in.
As to the reinstallation, shut down and start all over. If you have an external enclosure, test the drive on a different computer.
'MacOS Base System' of only about 2GB in size may well be the ROM-resident Internet Recovery software, that springs to life when you boot and hold command-R or Option-Command-R.
MacBook Pro 2017 new hard drive issues
