Fix run_vm_bios.sh: add missing backslashes and improve CDROM boot compatibility

run_vm_bios.sh

@@ -4,22 +4,30 @@
 ISO_PATH="${1:-/home/n0va/.local/share/iridium-installer-vm/Fedora.iso}"
 DISK_PATH="${2:-/home/n0va/.local/share/iridium-installer-vm/test-disk.qcow2}"
 
+if [ ! -f "$ISO_PATH" ]; then
+    echo "Error: ISO not found at $ISO_PATH"
+    exit 1
+fi
+
 echo "Starting Iridium VM with BIOS (Legacy) support..."
 echo "ISO: $ISO_PATH"
 echo "Disk: $DISK_PATH"
 
-# QEMU Command with BIOS (Standard QEMU behavior)
-qemu-system-x86_64 
-    -enable-kvm 
-    -m 8G 
-    -smp 2 
-    -cpu host 
-    -drive file="$DISK_PATH",format=qcow2,if=virtio 
-    -cdrom "$ISO_PATH" 
-    -boot once=d 
-    -netdev user,id=net0 
-    -device virtio-net-pci,netdev=net0 
-    -vga virtio 
-    -display gtk,gl=on 
-    -monitor unix:$HOME/.local/share/iridium-installer-vm/monitor.sock,server,nowait 
+# QEMU Command with BIOS
+# Using -device ide-cd for better compatibility in some environments
+qemu-system-x86_64 \
+    -enable-kvm \
+    -m 8G \
+    -smp 2 \
+    -cpu host \
+    -drive file="$DISK_PATH",format=qcow2,if=virtio \
+    -device virtio-scsi-pci,id=scsi0 \
+    -drive file="$ISO_PATH",format=raw,if=none,id=cdrom,readonly=on \
+    -device scsi-cd,bus=scsi0.0,drive=cdrom \
+    -boot order=d \
+    -netdev user,id=net0 \
+    -device virtio-net-pci,netdev=net0 \
+    -vga virtio \
+    -display gtk,gl=on \
+    -monitor unix:$HOME/.local/share/iridium-installer-vm/monitor.sock,server,nowait \
     -name "Iridium Installer Test VM (BIOS)"