VIM 5 has onboard eMMC, allowing you to install the OS directly.
VIM 5 includes the OOWOW service, an embedded tool for installing the OS directly from the cloud. This is the easiest way to install the OS.
Refer to VIM 5 Install OS into eMMC via OOWOW for instructions.
Refer to VIM 5 Install OS into eMMC via USB Flash Tool for instructions.
VIM 5 supports booting from external storage, such as a TF card or USB storage.
See VIM 5 Install OS into External Storage for details.