[beagle3]

A complete reinstall of a modern Ubuntu on a spinning HDD takes less than 30 minutes in my experience (often less than 15).

Windows installs and reinstalls take hours more often than not -- just logging in for the first time on an up-to-date Win10 laptop recently took 10 minutes to "personalize" it for me ... and this was on an SSD. I used to have curiosity about how they made it so bad, but these days I've placed anything windows under a SEP field.

[maccard]

My last windows install was about 30 minutes from boot to actually on desktop (very frustratingly interactive though, blocking the last 10 minutes behind that personalizing dialog)

[kl4m]

And then there's the updates

[ToFab123]

Not really, if you download a fresh installation media from Microsoft