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![]() ![]() It looks like the install may have frozen for some reason. Using bless and trying to specify the apfs.efi file that is buried in the install files is of no avail I get similar errors to those above that I won't type out here. Looking in /Volumes/dotty (my install partition) showed a pretty sparse file system, with one main directory ( macOS install data or similar). ![]() Googling these errors doesn't seem to turn up anything but the original source files so I'm pretty sure I'm barking up the wrong tree. Could not load apfs.efi data from /Volumes/dotty//usr/standalone/i386/apfs.efi.Can’t load /Volumes/dotty//usr/standalone/i386/apfs.efi.I tried a few variantsĬould not access boot.efi file at /var/tmp/RecoveryTempbless.PQpy/>/Library/CoreServices/boot.efiĬouldn’t set bless data in preboot volume for device /dev/disk1s1 Some digging led to the bless command, which seems to serve this purpose. I am trying to find out if there is a way to make the SSD bootable from the command line. I'm using the default settings (APFS format, GUID scheme) when formatting the SSD. Of course you have to have macOS installed on it. Click Startup Disk and select your macOS disk. Go ahead and press Command + R and click on the Apple icon. I have tried reformatting the SSD and reinstalling the OS a couple of times, but no change. Of course you can see your SSD, BootCamp is just another partition on your Mac SSD. I tried booting from USB and went to Startup Disk, hoping to select the SSD. ![]() When inspecting with Disk Utility (disk info), the new SSD, 'Container disk1', and the install partition are all flagged as not bootable. When removing the USB and rebooting, I get the flashing question mark folder of death. On trying to reboot, though, it boots from the USB instead of the SSD. The SSD is recognized by the installer, and the first step of OS installation takes all of 3 minutes. With the new logic board in place, installing Mac OS High Sierra from USB seems to go fine at first, until it is time to boot. The problem seemed to be with the logic board, so I replaced that as well. I first upgraded the SSD, OS install went smoothly and the machine worked well for a few days, but soon started having the same random crashing issues. The original machine was crashing, and long story short diagnostic mode indicated an unfixable hard drive error. ![]() I have a mid-2012 MacBook Pro Retina, and recently replaced the SSD (Samsung 860 EVO 1TB) and logic board (refurb). ![]()
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