Mount a folder on Windows on rk devices, and save the packaged files to Windows in real time via SSH

1. Introduction

To save the real-time packaged image files directly to Windows, instead of creating the image on the RK3588 device first and then transferring it, you can mount the shared folder on Windows to the RK3588 device over the network. This way you can write the mirror directly to the storage of Windows devices without taking up memory space on RK3588 devices.

2. Step 1:WindowsSettings onShared folders

Create a shared folder
existWindowsOn, right-click the folder you want to share (such asD:\work\remote_img),choose"property”。
Set up sharing
existpropertyIn the window, select “shared” tab, and click “Advanced Sharing”。
- Check "Share this folder" and then specify a name for the share (the default is the same as the folder name)
- Click "Permissions",make sure"Complete control"Permissions have been granted to the appropriate user or "Everyone” (as the case may be).
Confirm the shared path
- Shared paths may be similar to\\<Windows_IP>\share_name,For example\\192.168.1.31\remote_img。

3. InRK3588Install necessary tools on the device (installed according to actual needs)

Install cifs-utils on RK3588 devices, which allows you to mount Windows shared folders
```
sudo apt-get update
sudo apt-get install cifs-utils
```
- 1
- 2

4. Mount Windows shared folder to RK device

Create a directory on the RK device to mount the Windows shared folder
```
sudo mkdir /mnt/remote_img
```
- 1
Mount Windows shared folder on RK device
```
sudo mount -t cifs -o username=your_windows_user_name,password=your_password //192.168.5.34/remote_img /mnt/remote_img
```
- 1
- username=your_windows_user_nameandpassword=your_passwordIt is the username and password you use on your Windows device.
- //192.168.5.34/remote_imgIt is the network path to the shared folder.
- /mnt/remote_imgIt is the mount point directory on the rk device.
Check whether the mount is successful
```
df -h
```
- 1
After the mount is successful, you should be able to see the mount point/mnt/remote_img, which corresponds to a shared folder on a Windows device.

5. Save the mirrored real-time file to Windows

sudo dd if=/dev/mmcblk0 bs=4M | tee /mnt/remote_img/backup_image_v2043.img | dd of=/dev/null

teeThe command is used to copy the data stream to a file while continuing to transfer, so the data is not only saved to the mirror file, but also processed in real time.
/mnt/remote_img/backup_image_v2043.imgis the path to the Windows shared folder.
dd of=/dev/null: Pass the data stream at the same time, but no additional processing is done.

6. Automatic mount (optional)

If you want the mount point to beAutomatically mount after restarting, can be edited/etc/fstabdocument:
```
sudo vim /etc/fstab
```
- 1

Add the following at the end of the file:

//192.168.1.31/remote_img /mnt/remote_img cifs username=your_windows_user_name,password=your_password,iocharset=utf8,vers=3.0 0 0

Save and exit.

7. Encounter permission problems

“Permission denied” and other errors indicate that the current user or process does not have sufficient permissions when writing to the mounted shared folder.

Solution steps:

1. Uninstall the existing mount
```
sudo umount /mnt/remote_img
```
- 1
2. Remount using the mount command with permission settings
```
sudo mount -t cifs -o username=your_windows_username,password=your_password,uid=1000,gid=1000,file_mode=0777,dir_mode=0777 //192.168.1.31/remote_img /mnt/remote_img
```
- 1
- username=your_windows_usernameand password=your_password: Replace with your username and password on Windows.
- uid=1000,gid=1000: Set the ownership of the mounted file to the current user (usually 1000 is the UID of the first created user).
- file_mode=0777,dir_mode=0777: Set the permissions of files and directories to be readable, writeable and executed.