I came across a 2012 iMac (A1419) with a busted display. I removed the LCD panel and the cable altogether, connected it to an external display using a mini DP -> HDMI adapter and it booted up and output to the external display. However, the previous owner didn't wipe the hard drive so I'm stuck at the login screen. And I eventually want to run Linux on it heedlessly.
So I burned a Catalina recovery USB and tried to boot from it. I used a USB keyboard and pressed and held option key when powering up. The USB stick should be good. I can boot from it on a MacBook. However, it looks like the initial screen is not output to the external display so I have no way to install the OS.
Has anyone succeeded in doing this? If so, what's the trick? Thanks.
I came across a 2012 iMac (A1419) with a busted display. I removed the LCD panel and the cable altogether, connected it to an external display using a mini DP -> HDMI adapter and it booted up and output to the external display. However, the previous owner didn't wipe the hard drive so I'm stuck at the login screen. And I eventually want to run Linux on it heedlessly.
So I burned a Catalina recovery USB and tried to boot from it. I used a USB keyboard and pressed and held option key when powering up. The USB stick should be good. I can boot from it on a MacBook. However, it looks like the initial screen is not output to the external display so I have no way to install the OS.
Has anyone succeeded in doing this? If so, what's the trick? Thanks.
I came across a 2012 iMac (A1419) with a busted display. I removed the LCD panel and the cable altogether, connected it to an external display using a mini DP -> HDMI adapter and it booted up and output to the external display. However, the previous owner didn't wipe the hard drive so I'm stuck at the login screen. And I eventually want to run Linux on it heedlessly.
So I burned a Catalina recovery USB and tried to boot from it. I used a USB keyboard and pressed and held option key when powering up. The USB stick should be good. I can boot from it on a MacBook. However, it looks like the initial screen is not output to the external display so I have no way to install the OS.
Has anyone succeeded in doing this? If so, what's the trick? Thanks.