Hide drive C while in Win 7 mode


I have a situation, I successfully installed Win 7 on my system, everything works well, and now, besides my XP OS on drive C, I have a second OS - Win 7 on partition on other drive F. BUT, now that I want to instal drivers and other software on Win 7, in instalation dialog it shows that its first choice of drives is drive C (on drive C is XP), basicly, I dont want drive C to be visible and to be eligible for instalation while I m in Win 7, what should I do.

I can change drive when in install dialog, but it definately will install some spec or change reg files in drive C - but I dont even want to touch drive C while I m working in Win 7 , I want all my instalations (first choice in instal dialog) are made on drive F.

Please give some advice.

Desperate guy from deep north.

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