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Home Common Problem How to fix 'The system cannot open the device or file specified'

How to fix 'The system cannot open the device or file specified'

Jul 13, 2025 am 12:10 AM

When an error "The system cannot open the device or file specified" appears, it is usually because of a path error, a file occupied, insufficient permissions, or the device driver is not started. 1. First check whether the path is correct, confirm whether the file exists in the current directory or uses an absolute path; 2. Check whether the file is occupied or damaged by other programs, try to close the program or copy the copy operation; 3. Check whether the user permissions are sufficient, run the program as an administrator or use sudo if necessary; 4. If the device is involved, confirm that the device is connected normally and the driver is installed, you can try to replug or unplug or update the driver. Follow these steps to troubleshoot most of the problems.

How to fix \

When an error "The system cannot open the device or file specified" appears, it usually means that the system fails when trying to access a file or device. This problem may occur when running commands, starting programs, or executing scripts. The key to the solution is to find out which "device or file" cannot be opened and check the relevant paths, permissions and status.

How to fix

Here are some common troubleshooting directions and treatment methods:


1. Check if the path is correct

This is the most common source of problems. The system cannot find the specified file or device, often because the path is written incorrectly, the file name is spelled incorrectly, or the current directory is incorrect.

How to fix
  • Confirm whether the path you entered is an absolute or a relative path .
  • If using a relative path, check if the current working directory is the location you expect.
  • On the command line, you can use the cd command to view the current directory, or use dir (Windows) or ls (Linux/macOS) to list the directory contents to confirm whether the target file exists.

For example:

 notepad.exe C:\Users\John\Documents\notes.txt

If notes.txt is not in that directory, this error will be prompted.

How to fix

2. Files are occupied or corrupted

Sometimes, although files exist, they are occupied, damaged or written by other programs, which makes the system unable to access them normally.

  • Close programs that may occupy the file (such as editors, terminals, etc.).
  • Try copying a copy and then operation to see if it can solve the problem.
  • To check the disk for errors, you can use chkdsk (Windows) or fsck (Linux) to fix file system problems.

3. Insufficient permissions

This prompt will also appear if you do not have permission to access the file or device.

  • Right-click the File → Properties → Security tab on Windows to see if your account has read/write permissions.
  • On Linux or macOS, you can view permission settings with ls -l 文件名.
  • If necessary, you can run the program as an administrator (Windows) or use sudo (Linux/macOS).

4. The device driver or service has not started

If an error is reported when accessing a device (such as a serial port, USB device, etc.), it may be that the relevant driver is not installed, or the corresponding system service is not started.

  • Check Device Manager (Windows) or lsusb / dmesg (Linux) to see if the device is recognized.
  • Try replugging and unplugging the device.
  • Update or reinstall the drivers of the corresponding device.

Let's summarize how you can do it:

  • ? Confirm that the path is correct, especially case-sensitive and space-sensitive.
  • ? Check whether the file exists and is occupied.
  • ? Check if the permissions are sufficient.
  • ? If the device is involved, check the connection and drive status.

Basically these common reasons are the problems. Although they are simple, they are easy to ignore details.

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