It is possible to update from W7 32-bit to W10 32-bit, but on the 2009 Mini, driver issues are the most likely problem. You can stay with drivers that W10 will provide, but some of your Apple-specific functions may not work as you want them.
It is possible to update from W7 32-bit to W10 32-bit, but on the 2009 Mini, driver issues are the most likely problem. You can stay with drivers that W10 will provide, but some of your Apple-specific functions may not work as you want them.