diff --git a/OvmfPkg/AmdSev/AmdSevX64.dsc b/OvmfPkg/AmdSev/AmdSevX64.dsc
index 726521c943..90e8a213ef 100644
--- a/OvmfPkg/AmdSev/AmdSevX64.dsc
+++ b/OvmfPkg/AmdSev/AmdSevX64.dsc
@@ -43,8 +43,8 @@
   #
   # Device drivers
   #
-  DEFINE PVSCSI_ENABLE           = TRUE
-  DEFINE MPT_SCSI_ENABLE         = TRUE
+  DEFINE PVSCSI_ENABLE           = FALSE
+  DEFINE MPT_SCSI_ENABLE         = FALSE
   DEFINE LSI_SCSI_ENABLE         = FALSE
 
   #
diff --git a/OvmfPkg/CloudHv/CloudHvX64.dsc b/OvmfPkg/CloudHv/CloudHvX64.dsc
index 0bfe542f8a..f0d700f144 100644
--- a/OvmfPkg/CloudHv/CloudHvX64.dsc
+++ b/OvmfPkg/CloudHv/CloudHvX64.dsc
@@ -49,8 +49,8 @@
   #
   # Device drivers
   #
-  DEFINE PVSCSI_ENABLE           = TRUE
-  DEFINE MPT_SCSI_ENABLE         = TRUE
+  DEFINE PVSCSI_ENABLE           = FALSE
+  DEFINE MPT_SCSI_ENABLE         = FALSE
   DEFINE LSI_SCSI_ENABLE         = FALSE
 
   #
diff --git a/OvmfPkg/IntelTdx/IntelTdxX64.dsc b/OvmfPkg/IntelTdx/IntelTdxX64.dsc
index 144d50aa9d..71b1cf8e70 100644
--- a/OvmfPkg/IntelTdx/IntelTdxX64.dsc
+++ b/OvmfPkg/IntelTdx/IntelTdxX64.dsc
@@ -34,8 +34,8 @@
   #
   # Device drivers
   #
-  DEFINE PVSCSI_ENABLE           = TRUE
-  DEFINE MPT_SCSI_ENABLE         = TRUE
+  DEFINE PVSCSI_ENABLE           = FALSE
+  DEFINE MPT_SCSI_ENABLE         = FALSE
   DEFINE LSI_SCSI_ENABLE         = FALSE
 
   #
diff --git a/OvmfPkg/Microvm/MicrovmX64.dsc b/OvmfPkg/Microvm/MicrovmX64.dsc
index 61db9b6e4c..52498bbe90 100644
--- a/OvmfPkg/Microvm/MicrovmX64.dsc
+++ b/OvmfPkg/Microvm/MicrovmX64.dsc
@@ -47,8 +47,8 @@
   #
   # Device drivers
   #
-  DEFINE PVSCSI_ENABLE           = TRUE
-  DEFINE MPT_SCSI_ENABLE         = TRUE
+  DEFINE PVSCSI_ENABLE           = FALSE
+  DEFINE MPT_SCSI_ENABLE         = FALSE
   DEFINE LSI_SCSI_ENABLE         = FALSE
 
   #
diff --git a/OvmfPkg/OvmfPkgIa32.dsc b/OvmfPkg/OvmfPkgIa32.dsc
index e708411076..725a01ae9a 100644
--- a/OvmfPkg/OvmfPkgIa32.dsc
+++ b/OvmfPkg/OvmfPkgIa32.dsc
@@ -50,8 +50,8 @@
   #
   # Device drivers
   #
-  DEFINE PVSCSI_ENABLE           = TRUE
-  DEFINE MPT_SCSI_ENABLE         = TRUE
+  DEFINE PVSCSI_ENABLE           = FALSE
+  DEFINE MPT_SCSI_ENABLE         = FALSE
   DEFINE LSI_SCSI_ENABLE         = FALSE
 
   #
diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc
index 0b036d8bb5..adc813ba2e 100644
--- a/OvmfPkg/OvmfPkgIa32X64.dsc
+++ b/OvmfPkg/OvmfPkgIa32X64.dsc
@@ -49,8 +49,8 @@
   #
   # Device drivers
   #
-  DEFINE PVSCSI_ENABLE           = TRUE
-  DEFINE MPT_SCSI_ENABLE         = TRUE
+  DEFINE PVSCSI_ENABLE           = FALSE
+  DEFINE MPT_SCSI_ENABLE         = FALSE
   DEFINE LSI_SCSI_ENABLE         = FALSE
 
   #
diff --git a/OvmfPkg/OvmfPkgX64.dsc b/OvmfPkg/OvmfPkgX64.dsc
index 8ad04b50f7..6e68f60dc9 100644
--- a/OvmfPkg/OvmfPkgX64.dsc
+++ b/OvmfPkg/OvmfPkgX64.dsc
@@ -49,8 +49,8 @@
   #
   # Device drivers
   #
-  DEFINE PVSCSI_ENABLE           = TRUE
-  DEFINE MPT_SCSI_ENABLE         = TRUE
+  DEFINE PVSCSI_ENABLE           = FALSE
+  DEFINE MPT_SCSI_ENABLE         = FALSE
   DEFINE LSI_SCSI_ENABLE         = FALSE
 
   #