Can Sonoma create a bootable USB installer of High Sierra? I'm in a tough spot here.
I have an older iMac (intel from 2010) and it was running High Sierra. I'm running into many problems with recovering the system after a failure. I've reformatted the hard drive and the drive is working fine now. I tried to recover from a time machine backup, but it failed and will not complete. I also tried installing a fresh version of High Sierra from the bootable file built in, but it just hangs and does not start installing. I then tried recovering with the internet recovery method, but I kept getting the error that it couldn't find the recovery server. I followed all the steps to troubleshoot that (including changing the date/time in the terminal). No luck. I'm at my last option (unless you can think of something else) to create a bootable USB installer. I downloaded the High Sierra .dmg file from Apple, but now I need to create a bootable installer file from that .dmg. We have a newer iMac (2020) running Sonoma, and it will not allow me to create this file. I double-click on the .dmg and that opens a window with the .pkg file. If I double-click on that, it tries to open an installer but fails saying this version can't be installed on this computer. I'm not wanting to install it on that computer. I just want to open up the package to get the installer file to create the bootable USB installer. My only other computer is a work laptop with Windows 11. As a last ditch effort, would it be possible to create the installer file from a Windows machine? If none of these work, I may have a really old 2007 iMac put away in storage somewhere that I can pull out to see if I can get it to work to create this image. It's been really frustrating. Any advice would be appreciated.
Earlier Mac models