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Clearing the download cache of Steam will force the Steam client to flush locally cached configuration data and acquire it from the Steam server again.

Navigate to your Steam - Clear Download Cache Reinstalling Steam may fix potential issues with Steam client and service files while preserving all installed games.

Read how to boot from the target disk if you have such an intention.

Click Apply to put the pending operations into effect and wait patiently until Mini Tool Partition Wizard finishes.

Launch this free partition magic to the main interface.

At the disk map area, select the partition that has Steam installed and choose "Check File System" from the Check Partition group. In the new emerging window, select "Check & fix detected errors" and click Start button. If any error is found, Partition Wizard will try its best to fix it.

Be aware that all data on the selected target disk will be cleaned for a successful clone.

Now it is time to test whether there are bad sectors on the drive bringing Steam disk write error Windows 10/8/7. Select the disk that has Steam installed and reports Steam disk write error and then choose "Surface Test" from the Check Disk group. In the new emerging window, click Start Now on the top right corner to begin the check.

Note that if there are errors found, they will be marked with red color.

All storage drives/devices can be affected by file corruption, especially if it has run for years or running under a heavy load.

You'll want to work with a tech support specialist to investigate possible issues with your Steam hard drive.

Remember: DO NOT uninstall (this may delete all game content), just reinstall Steam to the same location.

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