How does umount ensure that data is not lost during unmounting?

To ensure that no data is lost during the uninstallation process, you can take the following measures:

1. Ensure that no applications or processes are accessing or writing to the mounted file system before uninstalling.
2. Before uninstalling, use the “sync” command to write all buffered data to the disk to ensure that all data has been written to the disk.
3. Use the umount command to dismount the filesystem, ensuring that no errors or interruptions occur during the dismount process.
4. After uninstalling, run the fsck command to check and repair the file system to ensure its integrity and stability.
5. Before taking any action, you should back up important data to prevent data loss in case of unexpected situations.