diff --git a/README.md b/README.md
index 35169f8..6b23cc0 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,42 @@
 # windows-rebuild-bcd-boot
 
+Utiliser DISKPART pour créer ou préparer une partition de démarrage
+
+        Type and run the command:
+
+        diskpart
+
+        Type and run the command:
+
+        select disk 0
+
+        Type and run the command:
+
+        list vol
+
+    Verify that the EFI partition (EPS - EFI System Partition) is using the FAT32 file system. Assign a drive letter to it that is not already in use:
+
+        Type and run the command:
+
+        select vol <number of volume>
+
+        Type and run
+
+        format fs=fat32
+
+        Type and run the command:
+
+        assign letter=<drive letter>
+
+        Type and run the command:
+
+        exit
+
+
+Pour réparer ou créer / recréer / refaire le magasin bcd
+
+
+    bcdboot c:\Windows /s <boot letter>: /f ALL (You can add a switch before /s for the computer locale: /l <language code>. By default, /l en-us English USA is used.)
+
+Optionnel 
+    bootrec /rebuildbcd