What are the upgrade paths for Vista from previous versions of Windows?
Depending on your current operating system, you might be able to do an in-place upgrade (IPU) to Windows Vista, or you could have to carry out a clean install (CI). The table below explains the options open to you based on your existing operating system.
| From/To | Home Basic | Home Premium | Business | Ultimate |
| XP Pro | CI | CI | IPU | IPU |
| XP Home | IPU | IPU | IPU | IPU |
| XP Media | CI | IPU | CI | IPU |
| XP Tablet | CI | CI | IPU | IPU |
| XP Pro 64 | CI | CI | CI | CI |
| Win 2000 | CI | CI | CI | CI |
