Hi all. Hope you can help.
The startup chime is heard, but then it will stay at the black screen for an hour or so until it gets to whatever startup mode I've picked.
For example, if I try to go to Internet Recovery mode by holding down Command + Option + R after the chime, I have to wait an hour before the spinning globe appears.
Once I'm into Internet Recovery Mode, I get the usual four options. If I try to Reinstall macOS the installer can't find the internal SSD. If I try Disk Utility, there's no "Internal" section in the sidebar, just the "Apple disk image Media" device and the "OS X Base System" volume on it.
If I jump into the Terminal, "diskutil list" shows about 20 different volumes, none of which are large enough to be the internal 256GB SSD.
This was working fine the other week, and I wiped it as I'd sold it online. The guy had to send it back to me because it was doing what I've described above. When I sent it to him, the installer was ready to install macOS, and it only took a few seconds to boot up, so I've no idea what happened.
Any ideas? I've tried to boot from a bootable external USB stick with the macOS installer on it, but that just exhibits the same lengthy delay, and again, the installer cannot find the internal SSD.
The startup chime is heard, but then it will stay at the black screen for an hour or so until it gets to whatever startup mode I've picked.
For example, if I try to go to Internet Recovery mode by holding down Command + Option + R after the chime, I have to wait an hour before the spinning globe appears.
Once I'm into Internet Recovery Mode, I get the usual four options. If I try to Reinstall macOS the installer can't find the internal SSD. If I try Disk Utility, there's no "Internal" section in the sidebar, just the "Apple disk image Media" device and the "OS X Base System" volume on it.
If I jump into the Terminal, "diskutil list" shows about 20 different volumes, none of which are large enough to be the internal 256GB SSD.
This was working fine the other week, and I wiped it as I'd sold it online. The guy had to send it back to me because it was doing what I've described above. When I sent it to him, the installer was ready to install macOS, and it only took a few seconds to boot up, so I've no idea what happened.
Any ideas? I've tried to boot from a bootable external USB stick with the macOS installer on it, but that just exhibits the same lengthy delay, and again, the installer cannot find the internal SSD.
