2/19/2023 0 Comments Macbook pro os x download usbThey'll get done and the terminal prompt will show up again. Make sure to run them both, and just let them run! They are doing things in the background you don't see progress for. That thread has some command line in it to get the installer extracted and runs commands to slap it onto your USB and make it bootable. BAM! It is quoted below, but go check the link for additonal comments and helpful info. Normally following this walkthrough ( Make USB bootable on Mac) would be enough, but it only applies to upgrades. If the installer for El Capitan or some older version isn't installed to Mac OS, then you cannot run the commands in Terminal to created a bootable USB. However, this Mac Mini was on Catalina and refused to install the older Installer for El Capitan. I tried to download El Capitan and got the DMG file downloaded. I went to work and got on a spare Mac Mini. I tried several versions of Mac OS ( 10.11, 10.12, 10.13) to no avail. However, I am guessing those images aren't meant for being UEFI bootable because my USB stick wouldn't be detected. So after getting those files, I used TransMac to try and put one of those files onto a USB. I get a hold of some DMG files, which aren't useful in Windows. I go to my windows pc and start searching for ways to make a USB bootable drive in Windows. It fails on wired and wireless internet, as I try it again a couple times. I get though the installer prompts and it starts to install and fails, saying it couldn't download all the components. I go through the internet recovery options and go to re-install. User doesn't want anything off of it, so no problem in wiping it. So I do a quick search and try to launch recovery by holding Command and R and powering up. They didn't say what wen't wrong w the upgrade, but when I recieve it, it is showing the blinking folder icon with question mark. The user wanted to upgrade it to sell it and so proceeded to do so. So I've had a bit of a struggle with this macbook pro! It had Mac OS Lion 10.7 on it.
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