Hey Mustafa, sorry to hear you're stuck with this annoying SSD issue—100% disk active time while idle, with almost no read/write activity, is definitely strange especially for an M.2 NVMe drive that’s supposed to be lightning-fast. Let’s walk through the most likely causes and fixes based on what you’ve shared:

1. 先排查NTFS文件系统异常 #

You mentioned the System process is accessing NTFS volume logs and the Master File Table (MFT)—these are core file system components, and hidden corruption here can trigger endless background scanning or repair attempts.

• Open Command Prompt as Administrator, then run this command:

  chkdsk C: /f /r
  

  You’ll need to restart your system for this to run (since the disk is in use). This command fixes file system errors and recovers data from bad sectors, which often resolves unexplained MFT/log-related disk churn.

2. 调整NVIDIA调试日志相关设置 #

The NVIDIA debug log showing up in disk activity is a clue—some NVIDIA services might be overwriting logs excessively in the background.

• Open NVIDIA Control Panel, navigate to Help or Settings (depending on your driver version) and disable any debug logging options you find.
• Update your NVIDIA graphics driver to the latest stable version—old drivers sometimes have bugs that cause unnecessary background disk activity.
• If the issue persists, open Task Manager, find the NVIDIA Container process, right-click it and select End task, then restart your system to see if the disk calms down.

3. 禁用SysMain（原Superfetch）服务 #

SysMain is designed to preload frequently used apps into memory, but it can sometimes go haywire on idle and hammer the disk for no good reason.

• Press Win + R, type services.msc and hit Enter.
• Find the SysMain service, right-click it, select Stop, then set its Startup type to Disabled.
• Restart your system and check if the disk active time drops. Note: This might slow down app launches a little, but it’s a common fix for idle disk overload.

4. 重置虚拟内存设置 #

Misconfigured virtual memory can cause the system to constantly swap data to disk even when idle.

• Right-click This PC → Properties → Advanced system settings → Advanced tab → Settings (under Performance).
• Go to the Advanced tab, click Change under Virtual Memory.
• Uncheck Automatically manage paging file size for all drives, select your SSD drive, choose No paging file, click Set, then restart your system.
• After reboot, go back to the same menu, re-enable Automatically manage paging file size or set a fixed size (e.g., if you have 16GB RAM, try 4GB-8GB) to see if that stabilizes disk activity.

5. 检查SSD健康与固件更新 #

Even NVMe drives can have firmware bugs or hidden health issues that cause abnormal disk behavior.

• Use your SSD manufacturer’s official tool (e.g., Samsung Magician, Western Digital Dashboard, Crucial Storage Executive) to check:
  • Drive health status (look for wear levels, bad sectors, or temperature spikes)
  • Available firmware updates—manufacturers often release fixes for disk activity bugs.
• If the tool reports any health warnings, back up your data immediately and consider replacing the drive if it’s under warranty.

6. 调整Windows搜索索引 #

Windows Search sometimes runs aggressive background indexing on idle, which can spike disk active time without showing high read/write numbers.

• Press Win + S, type Indexing Options and open it.
• Click Pause to temporarily stop indexing, then check if the disk usage drops.
• If it does, click Advanced → Rebuild to reset the index. Once the rebuild finishes, resume indexing and see if the issue stays resolved.

7. 调整Windows Defender扫描计划 #

Windows Defender’s automatic scans can run in the background while idle, triggering disk activity that might not show up as high read/write.

• Open Windows Security → Virus & Threat Protection → Manage Settings (under Virus & Threat Protection Settings).
• Scroll to Periodic Scanning, adjust the scan schedule to a time when you’re actively using the computer (or temporarily disable it to test if the disk issue goes away). If disabling fixes it, re-enable with a more convenient schedule.

Start with the simpler fixes first (like chkdsk and disabling SysMain) and work your way up—this should help you narrow down the root cause.

备注：内容来源于stack exchange，提问作者mustafa candan