Some systems such as the Asus T100 Transformer notebook range are a bit of an odd fish!
They have a 64-bit CPU but because they have limited SSD storage (e.g. 32GB or 64GB), the manufacturers use a 32-bit version of Windows. This means that because Microsoft insist that OEMs ship with Secure UEFI enabled, the manufacturers have to use 32-bit UEFI firmware.
In the case of the T100, the firmware does not support Legacy\MBR mode (no CSM option) so we usually need to find UEFI32 OS's.
They have a 64-bit CPU but because they have limited SSD storage (e.g. 32GB or 64GB), the manufacturers use a 32-bit version of Windows. This means that because Microsoft insist that OEMs ship with Secure UEFI enabled, the manufacturers have to use 32-bit UEFI firmware.
In the case of the T100, the firmware does not support Legacy\MBR mode (no CSM option) so we usually need to find UEFI32 OS's.
