Thank you for the suggestion. Doing so I found out how to change the MaxTransfer and Mask values from the HDToolBox.
However several posters give several values for these two fields. Does anyone know what these values should be?
TBH I don't really understand it well enough to advise. As a rule of thumb, any values recommended by Tomas should be safe

You could always experiment with a few different values to find which one works.
To be sure it's working, I would change the value and then format the partition to get rid of any residual filesystem corruption, then re-try the installation.
Sorry I can't be more specific, but I don't want to guess at the values for MaxTransfer.