I have a Dell laptop which has an SSD drive to speed up booting. The OS is on a standard HDD. I have Win 7 HP and am considering an upgrade to Win 8.1. This PC boots up to desktop in around 45 seconds, but there is still a lot of disk activity for a couple of minutes. I do not find this an issue. If I were to do an upgrade, would the new OS also set up the SSD so that it would assist in the boot. I cannot see this drive in Explorer, Disk Management or Macrium Reflect. I believe I saw it once, but cannot remember how I got there. This PC is 5 years old and runs great. The potential move to 8.1 is to gain 4 more years of MS support and keep the PC running and avoid Win 10.
Thanks