To shrink a disk and create another hard drive partition on Windows Server 2019, you can use the built-in Disk Management tool. Here’s a clear, step-by-step guide:
✅ Step 1: Open Disk Management
Press Windows + R to open Run.
Type diskmgmt.msc and press Enter.
✅ Step 2: Shrink the Existing Partition
In Disk Management, locate the partition you want to shrink (usually C:).
Right-click the volume and choose Shrink Volume…
Enter the amount of space to shrink (in MB).
Example: To shrink 20 GB, enter 20480.
Click Shrink.
⚠️ Note: Windows may not let you shrink the entire free space due to system files.
✅ Step 3: Create a New Partition (Drive)
After shrinking, you’ll see Unallocated Space.
Right-click the unallocated space and choose New Simple Volume…
Follow the wizard:
Set the volume size (use default or adjust).
Assign a drive letter (e.g., D:).
di
Format the partition using NTFS (recommended).
Set a volume label (e.g., Data, Backup, etc.).
Click Finish.
💡 Additional Tips
The new drive will now appear in This PC and can be used normally.
Always back up important data before making partition changes.
If Disk Management is too limited, tools like EaseUS, AOMEI, or MiniTool Partition Wizard offer more options.
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