MY 16TB MyBook is buffering
If your WD My Book 16TB External Hard Drive is only buffering or transferring around ~500 KB/s (or very slowly), something is limiting the speed. Normally it should reach 80–180 MB/s over USB 3. Here are the most common causes and fixes:
Check the USB Port Type
The drive needs USB 3.0+ for full speed.
Blue USB port = USB 3.0
Black USB port = USB 2.0
If connected to USB 2.0, speed drops to about 20–35 MB/s or less.
✔ Fix: Plug it into a USB 3.0/3.1 port directly on the computer.
A damaged or wrong cable can slow the drive.
✔ Try:
Another USB-A to Micro-B 3.0 cable
Avoid USB hubs.
Drive Might Be Busy Indexing / Scanning)
After connecting a big drive, Windows may scan or index files, causing buffering.
Check:
If antivirus or indexing is using the drive.
✔ Wait until scanning finishes.
File System Errors
Errors can slow reading.
✔ Run check disk:
This PC → Right click drive → Properties → Tools → Check
Very Large Folder / Millions of Files
Copying many small files causes extremely slow speed.
Example:
10,000 small files = very slow
1 big file = very fast
✔ Solution:
Zip files before copying.
Hard Drive Going to Sleep
Some WD MyBook drives park heads aggressively.
✔ Try:
Safely eject and reconnect
Use WD Drive Utilities to check drive health.
Failing Drive (Check SMART)
If the drive is failing, speeds drop drastically.
✔ Use:
Crystal Disk Info
Look for:
Reallocated sectors
Warning / Bad status.
Quick test:
Copy one 2-5 GB file and see the speed.
If speed becomes 80–120 MB/s → normal
If still <5 MB/s → something wrong
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