Internet recovery mac os 20096/25/2023 One of the improvements they made with this model was removing the ability for the end user to upgrade the RAM. The one I have now is running Catalina updated from High Sierra. ![]() When I tried to install Ubuntu on it it kept giving me a warning about the clock speed on the CPU. I'm not sure but there may have been something wrong with the processor. I think I ultimately upgraded it to High Sierra before unloading it. This was my first rodeo with this type of install and didn't do the base partition but at the end of the day I was able to run it. I was able to boot to the USB drive once I got the new HDD installed. I also ended up having to run to a near by-ish Best Buy and acquire a wired Mac keyboard. I ordered a USB drive with Mavericks loaded. ![]() ![]() I had very few (no) options to create OS media before the HD tanked and honestly I was relying on my Time Machine backups which ultimately failed. Let me share with you my experience on an older Mac where an iTunes update fried the hard drive (thanks for that, um, "feature" Apple)
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