Manoel, Look up the Wiki page on installing Debian on Bay Trail machines: http://wiki.debian.org/InstallingDebianOn/Asus/T100TA - some machines have 32 bit UEFI and a 64 bit capable CPU. Boot using the multi-arch CD or DVD - htat will allow you to install in 32 bit mode and choose to install either 32 bit or 64 bit Debian as the main system. Hope this helps, AndyC