Setting up Linux on a 2007 Mac model
Setting up Linux on a 2007 Mac model
Install Rufus on your Windows machine, then obtain your preferred ISO file. Burn the ISO onto a USB drive using Rufus. Afterward, connect the USB to your Mac, adjust the BIOS settings to prioritize USB as the first boot device, and insert the USB with the ISO. Wait for the operating system to install.
Mac lacks built-in BIOS settings. Press Option (or Alt on a PC keyboard) and then choose the USB from the boot menu.
I set up Linux on a comparable older MacBook. I had to obtain a copy of rEFIt, an EFI boot tool, and spent some time adjusting Grub to install the 32-bit version. Keep in mind that even though the CPU was 64-bit, many MacBooks at that time ran 32-bit EFI, so a 32-bit bootloader was necessary.