

Also check apache\modules and php\ext carefully for extra files. Use a diff application to compare nf and php.ini in the old and new packages.

If you have inherited it, this part is a minefield. Note: if you made the previous install yourself, this will be a lot easier.

You don't want to use Moodle's internal backups system as this will make things take an age. At least an hour of free time, possibly up to three - the backups can take forever depending on how big your install has become and troubleshooting can be a pain.To have sufficient hard-drive space to backup your existing install in its entirety (preferably to another machine).The latest Moodle code if it wasn't included in the above.To download the latest XAMPP or windows installer package e.g.
