I'm currently running a dual-boot system with Windows Vista and Ubuntu. I'm just wondering if the 'erase disk' option will effectively erase both operating systems.
You can choose how you install elementary OS. In the installer, you will probably have these choices :
- Erase Ubuntu and reinstall : Install elementary in the ubuntu partition
- Erase disk and install : Take the full disk only for elementary
- Something else.
Something else will bring you in a partitionning tool. You have to reduce one of your existing partitions and create a new one if you want to install elementary OS + Ubuntu + Windows (I personally don't recommend this, if you do, be careful with grub.)