How to format Hard Drive and reinstall Catalina from USB I have a disk that's so full I cannot install Catalina in Recovery mode as there is not enough space. I have a pre-formatted and bootable USB but when I try and install the image to  the HD it fails telling me there is not enough space, doh!
Could someone please send me a link or the instructions to reformat the internal SSD hard drive and create the necessary partitions so that I have an 'empty' drive on which I can install from USB.
Thanks in advance, and yes I have a time machine backup of the unit!
Thanks everyone. I reformatted the drive and reinstalled and now I am in the middle of a Time Machine recovery.  Cheers gents you are the best.