diff --git a/A2Mac/Base.lproj/Main.storyboard b/A2Mac/Base.lproj/Main.storyboard
index fa8244b..c48a8aa 100644
--- a/A2Mac/Base.lproj/Main.storyboard
+++ b/A2Mac/Base.lproj/Main.storyboard
@@ -1434,7 +1434,7 @@
                                             </box>
                                             <button verticalHuggingPriority="750" translatesAutoresizingMaskIntoConstraints="NO" id="ccb-cj-gLu">
                                                 <rect key="frame" x="-2" y="223" width="87" height="18"/>
-                                                <buttonCell key="cell" type="check" title="Quick Disk" bezelStyle="regularSquare" imagePosition="left" state="on" inset="2" id="6QV-uF-Gh7">
+                                                <buttonCell key="cell" type="check" title="Quick Disk" bezelStyle="regularSquare" imagePosition="left" inset="2" id="6QV-uF-Gh7">
                                                     <behavior key="behavior" changeContents="YES" doesNotDimImage="YES" lightByContents="YES"/>
                                                     <font key="font" metaFont="system"/>
                                                 </buttonCell>
diff --git a/src/dev/disk/disk.c b/src/dev/disk/disk.c
index 536b734..dcdc928 100644
--- a/src/dev/disk/disk.c
+++ b/src/dev/disk/disk.c
@@ -21,7 +21,7 @@ disk_t disk = {
 const int diskAccelerator_frames  = 2;
 int diskAccelerator_count = 0;
 int diskAccelerator_speed = 25 * M / fps; // if less than actual CPU speed means no acceleration
-int diskAccelerator_enabled = 1;
+int diskAccelerator_enabled = 0;
 int disk_sfx_enabled = 1;
 
 // motor position from the magnet state