.SDI File Extension
File TypeWindows System Deployment Image
What is an SDI file?
System Deployment Image (SDI) file created with Windows Embedded Studio, a program used for creating disk images for Windows; contains a boot blob, load blob, and part blob; commonly used to create RAM disks or boot disks for loading and installing Windows.
The SDI File Manager program is included with Windows Embedded Studio and has a command-line tool called sdimgr.exe, which can be used to create, edit, and deploy SDI images.