Trying to install El Capitan via Bootable USB on MBP 2009 using Windows 10, not showing up

Question

I have recently received a 2009 MBP to use with an old video camera. The MBP has no HDD so I formatted an old windows drive to exFAT and have been trying to create a bootable USB for OSX installation, holding down the option key on boot but the bootable USB does not apprear.

I have tried to follow this post but i get stuck at the very beginning:

How can I use Windows to create an OS X El Capitan USB flash drive installer from the disk image (.dmg) file downloaded from Apple?

My InstallMacOSX.dmg (El Capitan file directly from Apple's website for OS's) file does not have this Install ESD file inside of the DMG when using 7Zip, I have tried Mountain Lion, Lion and El Capitan and neither have this file. Maybe this is why it will not appear.

I start my machine up using the option key and the USB bootable does not appear, only the new empty HDD.

This seems to be a common issue with other people who own old MBP of this era, with no original HDD and only a Windows machine.

By Install ESD file, I assume you are referring to the InstallESD.dmg file. I just download the InstallMacOSX.dmg file for El Capitan from Apple. This file does contain an InstallESD.dmg file. — David Anderson, Nov 26 '22 at 15:25
Do you reach step 3 of this answer? If so, then where in step 3 are you having a problem? — David Anderson, Nov 26 '22 at 15:54
@DavidAnderson Thanks for answering, yes that is where I was getting stuck. This is where I have just realised I have misread your table! I forgot to press " Open Inside* ". — chrisjw.2165, Nov 26 '22 at 16:16
@DavidAnderson I'll carry on from here and see how far I get. Cheers — chrisjw.2165, Nov 26 '22 at 16:17
@DavidAnderson All sorted! thank you for the guide! I've tried many in the last 48 hours and yours is the first to work! — chrisjw.2165, Nov 26 '22 at 17:37

Trying to install El Capitan via Bootable USB on MBP 2009 using Windows 10, not showing up

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