gh-145719: Add .efi file detection in mimetypes

Doc/whatsnew/3.15.rst

@@ -828,6 +828,7 @@ mimetypes
 * Add ``application/sql`` and ``application/vnd.sqlite3``.
   (Contributed by Charlie Lin in :gh:`145698`.)
 * Add ``image/jxl``. (Contributed by Foolbar in :gh:`144213`.)
+* Add ``application/efi``. (Contributed by Charlie Lin in :gh:`145720`.)
 * Add the following MIME types:
 
   - ``application/vnd.ms-cab-compressed`` for ``.cab`` extension

Lib/mimetypes.py

@@ -478,6 +478,7 @@ def _default_mime_types():
         '.js'     : 'text/javascript',
         '.mjs'    : 'text/javascript',
         '.dcm'    : 'application/dicom',
+        '.efi'    : 'application/efi',
         '.epub'   : 'application/epub+zip',
         '.gz'     : 'application/gzip',
         '.json'   : 'application/json',

Lib/test/test_mimetypes.py

@@ -227,6 +227,7 @@ def check_extensions():
                 ("application/epub+zip", ".epub"),
                 ("application/octet-stream", ".bin"),
                 ("application/dicom", ".dcm"),
+                ("application/efi", ".efi"),
                 ("application/gzip", ".gz"),
                 ("application/ogg", ".ogx"),
                 ("application/pdf", ".pdf"),

Misc/NEWS.d/next/Library/2026-03-10-01-54-34.gh-issue-145719.okJRoK.rst

@@ -0,0 +1 @@
+Add ``application/efi`` MIME type to :mod:`mimetypes`.