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Hi guys, i bought recently an imac a1207 that has no os on it, when i boot I’m on the screen of utility with different option (reinstall lion, wipe hard drive,assistance…) i did some research on the internet and i saw that it’s kinda complicated to do an install, so it would be super if someone can help me with a step by step using usb installer. Also, i saw that the update from snow leopard to lion is free, so maybe, i can install snow leopard then lion. Thanks for your help :)
Ok so i successfully installed lion with a usb. I wrote on a usb the install.dmg onto another usb then i put it in the mac, pressed alt and booted on the usb. Then clicked reinstall lion and it worked !
Using your El Capitan based system you’ll need to create a bootable OS installer CD/DVD disk for your A1174/A1207 system. This series if I remember correctly won’t boot from a USB drive. It requires either a bootable CD/DVD or a bootable FireWire drive. Download the Lion installer directly from Apple from here: Mac OS-X Lion Installer First run it to install the OS onto the re-writable CD/DVD your system can support so its bootable and then copy over the installer to the CD/DVD following this guide Create a Bootable DVD Copy of OS X Lion Installer. Then use it to boot up your A1174/A1207 system. References: Apple finally makes OS X Lion and Mountain Lion free to download
