Laptop BitLocker failing on drive with sparse file fragmentation
4.5
Highly fragmented sparse files cause the encryption engine to time out.
Symptoms
- Extremely slow progress
- Disk usage 100%
- System lag
Possible Causes
- Torrent downloads
- Virtual disks
Step-by-Step Fix
1
Defragment Drive
Run a full defrag before starting BitLocker.
2
Consolidate Sparse Files
Copy the file to a new location to write it contiguously.
3
Check Drive Health
Severe fragmentation can sometimes hide underlying disk errors.
When to See a Technician
Sparse files can have millions of fragments; defragging is essential for encryption performance.
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