added better disk checking

create-image-sdcard-resize-optional.sh

@@ -7,14 +7,36 @@ echo "==== 🧠 SD Card Disk Imager + Auto Resize ===="
 
 # === Step 1: Detect likely SD card devices ===
 echo ""
-echo "📦 Scanning for removable storage devices..."
-mapfile -t DISKS < <(lsblk -dpno NAME,MODEL,SIZE,RM | awk '$4 == 1 { print $1 }')
+
+echo "📦 Scanning for removable / USB storage devices..."
+
+echo "📦 Scanning for removable / USB storage devices..."
+
+mapfile -t DISKS < <(
+  lsblk -dpno NAME,RM,TRAN | awk '
+    {
+      name=$1
+      rm=$2
+      tran=$3
+
+      # Select:
+      #  - anything marked removable (RM=1)
+      #  - OR anything on USB transport
+      if (rm == "1" || tran == "usb") {
+        print name
+      }
+    }
+  '
+)
 
 if [ ${#DISKS[@]} -eq 0 ]; then
-  echo "❌ No removable (likely SD card) devices found!"
+  echo "❌ No likely SD/USB storage devices found!"
+  echo "   (Debug: run `lsblk -dpno NAME,MODEL,SIZE,RM,ROTA,TRAN` manually to inspect.)"
   exit 1
 fi
 
+
+
 echo ""
 echo "📂 Found the following removable block devices:"
 for i in "${!DISKS[@]}"; do