diff --git a/virtme/commands/run.py b/virtme/commands/run.py
index 762c6d8..87dadcc 100644
--- a/virtme/commands/run.py
+++ b/virtme/commands/run.py
@@ -725,13 +725,11 @@ def sanitize_disk_args(func: str, arg: str) -> Tuple[str, str]:
     return name, fn
 
 
-def can_use_kvm(args):
-    if args.disable_kvm:
-        return False
-    if not os.path.exists("/dev/kvm"):
+def can_access_file(path):
+    if not os.path.exists(path):
         return False
     try:
-        fd = os.open('/dev/kvm', os.O_RDWR | os.O_CLOEXEC)
+        fd = os.open(path, os.O_RDWR | os.O_CLOEXEC)
         os.close(fd)
         return True
 
@@ -739,6 +737,12 @@ def can_use_kvm(args):
         return False
 
 
+def can_use_kvm(args):
+    if args.disable_kvm:
+        return False
+    return can_access_file("/dev/kvm")
+
+
 def can_use_microvm(args):
     return not args.disable_microvm and not args.numa and args.arch == "x86_64" and can_use_kvm(args)
 
@@ -1084,6 +1088,16 @@ def do_script(shellcmd: str, ret_path=None, show_boot_console=False) -> None:
             # Turn off default I/O
             qemuargs.extend(arch.qemu_nodisplay_args())
 
+        # Check if we can redirect stdin/stdout/stderr.
+        if not can_access_file("/proc/self/fd/0") or \
+           not can_access_file("/proc/self/fd/1") or \
+           not can_access_file("/proc/self/fd/2"):
+            print(
+                "ERROR: not a valid pts, try to run vng inside tmux or screen",
+                file=sys.stderr,
+            )
+            sys.exit(1)
+
         # Configure kernel console output
         if show_boot_console:
             output = "/proc/self/fd/2"