diff --git a/resize.bat b/resize.bat
index d003b6a..51b0847 100644
--- a/resize.bat
+++ b/resize.bat
@@ -1,2 +1,3 @@
+set C=%SystemDrive:~0,1%
 for /f "tokens=2" %%a in ('echo list vol ^| diskpart ^| findstr /i "installer"') do (echo select disk 0 & echo select vol %%a & echo delete partition) | diskpart
-for /f "tokens=2" %%a in ('echo list vol ^| diskpart ^| findstr "\<C\>"') do (echo select disk 0 & echo select vol %%a & echo extend) | diskpart
\ No newline at end of file
+for /f "tokens=2" %%a in ('echo list vol ^| diskpart ^| findstr "\<%C%\>"') do (echo select disk 0 & echo select vol %%a & echo extend) | diskpart
\ No newline at end of file