If you are encountering a PowerShell error while trying to install SQL Server, it could be due to several reasons, such as insufficient privileges, issues with the storage subsystem, or remnants from previous installations. Here are some steps you can take to troubleshoot the issue:
- Check Privileges: Ensure that you are running the PowerShell as an Administrator.
- Disk Sector Size: If your disk sector size is incompatible, it may cause installation issues. You can check the disk sector size by running the following command in an elevated command prompt:
fsutil fsinfo sectorinfo C:
If the sector size is greater than 4096, you may need to apply a registry fix.
- Clean Previous Installations: If there are remnants from previous installations, uninstall all SQL Server components via Control Panel > Programs and Features. Then, delete the following folders if they exist:
-
C:\Program Files\Microsoft SQL Server
-
C:\Program Files (x86)\Microsoft SQL Server
After that, try installing SQL Server again.
If the problem persists, you may want to check the SQL Server error logs for more specific information regarding the installation failure.