I'm trying to create a custom version of Tiny Core Linux. I extracted the ISO image, added the required tcz files, and made a new ISO, but VMWare Virtual Machine was not able to boot from it. So I just extracted the ISO, recreated it without any changes, and it still didn't get detected by the VM. What am I doing wrong?
Use ISOLINUX. It gives you a new ISO image without tampering with your existing one, so your boot configurations will be unchanged.