diff --git a/src/Components/CreateImageWizard/ValidatedTextInput.tsx b/src/Components/CreateImageWizard/ValidatedTextInput.tsx
index 35f42228..997001e1 100644
--- a/src/Components/CreateImageWizard/ValidatedTextInput.tsx
+++ b/src/Components/CreateImageWizard/ValidatedTextInput.tsx
@@ -27,6 +27,7 @@ interface HookValidatedTextInputPropTypes extends TextInputProps {
   placeholder?: string;
   stepValidation: StepValidation;
   fieldName: string;
+  warning?: string;
 }
 
 export const HookValidatedInput = ({
@@ -40,6 +41,7 @@ export const HookValidatedInput = ({
   stepValidation,
   fieldName,
   type = 'text',
+  warning = undefined,
 }: HookValidatedTextInputPropTypes) => {
   const [isPristine, setIsPristine] = useState(!value ? true : false);
   // Do not surface validation on pristine state components
@@ -77,6 +79,13 @@ export const HookValidatedInput = ({
           </HelperTextItem>
         </HelperText>
       )}
+      {warning !== undefined && (
+        <HelperText>
+          <HelperTextItem variant="warning" hasIcon>
+            {warning}
+          </HelperTextItem>
+        </HelperText>
+      )}
     </>
   );
 };
diff --git a/src/Components/CreateImageWizard/steps/FileSystem/FileSystemTable.tsx b/src/Components/CreateImageWizard/steps/FileSystem/FileSystemTable.tsx
index 29ca2d81..dc59b15a 100644
--- a/src/Components/CreateImageWizard/steps/FileSystem/FileSystemTable.tsx
+++ b/src/Components/CreateImageWizard/steps/FileSystem/FileSystemTable.tsx
@@ -257,6 +257,11 @@ const MinimumSize = ({ partition }: MinimumSizePropTypes) => {
       ariaLabel="minimum partition size"
       value={partition.min_size}
       isDisabled={partition.unit === 'B'}
+      warning={
+        partition.unit === 'B'
+          ? 'The Wizard only supports KiB, MiB, or GiB. Adjust or keep the current value.'
+          : undefined
+      }
       type="text"
       ouiaId="size"
       stepValidation={stepValidation}