: If you are rooted, the sudo or tsu packages might be looking for the su binary in /system/bin/su or /system/xbin/su , but newer rooting methods (like Magisk) might store it elsewhere, such as /debug_ramdisk/su .
Some custom kernels or older root methods require SELinux permissive. Use an app like SELinuxToggler or run: no superuser binary detected. are you rooted
In these cases, the error is permanent without major changes (like installing a custom ROM or buying an unlockable device like a Pixel or OnePlus). : If you are rooted, the sudo or
Before diving into the error, let's quickly cover what root access is. Rooting an Android device gives you superuser-level access to the operating system, allowing you to modify system files, change system settings, and run specialized apps that require elevated permissions. Rooting is similar to jailbreaking an iPhone, but it's a more complex process due to Android's open-source nature. Before diving into the error, let's quickly cover
| Scenario | Binary Detected? | Root Status | Likely Cause | |---------------------------------|------------------|---------------|----------------------------------------| | Stock, unrooted device | No | Not rooted | Normal operation | | Traditional root (Chainfire) | Yes | Rooted | su present | | Magisk (without mount namespace)| Maybe (hidden) | Rooted | su in /sbin/.magisk or masked | | Magisk + Hide | No | Rooted | Namespace unmounting of su | | Failed root (partial) | No | No root access| Binary missing, SELinux blocking |
The error "No su binary detected" usually originates from these management apps. They are programmed to check for the presence of the su binary upon launch. If they can't find it, they can’t manage root permissions, resulting in the error.