Hi members

I don't know is this the correct place for me to post this topic .

I try to install EL capitan in to a old MacBook 2007 , I know this MacBook is not supported model for this OS anymore . So I need help and guide for me to boot and install El Capitan in to it . Now the MacBook I installed new SSD , so is totally empty , boot is the only way to install .

Any thing I need to do ?

I created a bootable Drive with the system inside , but when I restart hold Option button , the selection screeen out , is empty which mean can't read the pendrive , but I confirm the pendrive is bootable and works , because I plug it in to my other MacBook (later model) and boot it show .

I don't know what's wrong . I need to fix it let the old MacBook can see the bootable USB first , then I just gonna know how to let EL capitan OS run installation by accept MacBook 2007 and proceed the installation .

All sifu , please advice 🙏🏼