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#11
Hi pivo11,
There are various options in which you can disable the HDD.
The one that I would use [as would most other people] is to unplug the power supply and the HDD connection to the Motherboard in the tower prior to boot.
You can disable it in Device Manager:
Click Start > in the search box type devmgmt.msc > press Enter > Right Click the HDD drive letter [the non OS drive] > click Disable.
I hope this helps!