Time of Removal of Installation media

[Shehriyar Qureshi]

Hi, I recently installed Debian Stretch and I was confused as if I
installed it correctly. At the end of the installation, I got to the point
where it said "Make sure to remove the installation media so you don't boot
into the installer". I removed the USB at that point and clicked continue
after which it did some small stuff and rebooted. Did I remove the USB at
the correct time or was I not supposed to remove it at that point? Thank
you :)