Why usb blaster driver for Windows XP isn't available anymore at ALTERA website ?The option at the link bellow don't redirect to any page ( hypertext disabled ). https://www.altera.com/support/support-resources/download/drivers/dri-index.html
Yes, you are right. By default the USB blaster drivers will be available in the Quartus II installed folders. If you encounter any issue with you USB blaster or upgrade to newer Windows, you can also reinstall from this directory.