Choosing hard disk

adnan1024

Reputable
May 22, 2014
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I've two hard disk one is Toshiba and the another is Hitachi.Each hard disk contains os. Toshiba is windows 8 and the Hitachi is windows 7.But when the pc starts the hard disk runs which is default.But i want to choose something like this

Choose:
* Windows 8
* Windows 7

or

Choose:
* TOSHIBA
* HITACHI

If I select windows 8 then the toshiba will run and if i choose windows 7 then the hitachi will run but i can't get this opportunity.How can I do that???