Like all operating-system upgrades, the migration to Win10 will overwrite and replace your current OS. Here’s what to do to preserve your current Win7/8 setup.
Plus: Why you should not use a Win7 image to set up a new Win8 PC, understanding Windows Easy Transfer, and solving a problem with a Win7 “nondestructive reinstall.”
Win10 upgrade will wipe out a Win7/8 setup
Reader Ronald Lenci is wondering what will happen to his Win7 setup if he upgrades it to Win10. The answer applies to Win8, too.
- After July 29, can the Win10 download be used to make a dual-boot setup on a separate drive, so that Win7 is still left on the system as a backup?”
The initial Win10 release — the free version many users have opted for in the “Get Win10” program (MS info) — is an upgrade. By design, almost all operating-system upgrades replace your current setup.
The details are still fuzzy, but Microsoft says that after installing and activating the Win10 upgrade, you’ll be able to download a Win10 .iso file, which you can use for repairs or to perform a clean install of Win10.
But that’s after the free upgrade.