what is sdi file
A System Deployment Image (aka SDI) is a file format used primarily with Microsoft products to contain an arbitrary disk image, including boot sector information. Contents. Description[edit] The System Deployment Image (SDI) file format is often used to allow the use of a virtual disk for startup or booting. Some versions of Microsoft Windows allow for RAM booting, which is essentially the ability to load an SDI file into memory and then boot from it.