Back up any important data
Install the SSD in the computer or connect it externally
Open Disk Management on Windows or Disk Utility on macOS
Locate the new SSD in the drive list
Initialize the disk if prompted
Create a new partition or volume
Choose the file system format
Assign a drive letter or mount point if needed
Confirm the format settings
Start the format process
Wait for formatting to complete
Verify the SSD appears correctly and is ready to use