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May 10, 2026 |
File extension sy_
Name: Archive Files
Popularity: 4
Open With: Ultra File Opener
What is this sy_ file?
Compressed .SYS file sometimes used by application installers to reduce the size of installation files; similar to a .EX_ or .DL_ file and can be expanded back to a SYS file using the Microsoft Expand command line utility with the following syntax: expand file.sy_ file.sys NOTE: SY_ files also may just be renamed SYS files and therefore may not be compressed.
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