Will i lose my data if i install windows 7 without formatting the drive?

You should not, but if the system can not see enough of the original Windows 7 install to repair it, it is likely there is far more damage, including already having lost files. It is unlikely any o... Read More »
http://uk.answers.yahoo.com/question/index?qid=20120705020353AAM3Poj

Can I format and install windows 8 on my C drive, without any data being affected in D drive?

you'll be fine.as a precaution, you might want to use the mirror software that came with your ssd to make an exact duplicate of the C drive into a hidden partition on the physical hdd [which'll be ... Read More »
http://uk.answers.yahoo.com/question/index?qid=20121221165328AAAFlaE

No if it is a slave drive an you don't partition the f drive it will still be there however it will lose shortcuts on desktop and start menu to have quick access so you will need to copy thouse aft... Read More »
http://uk.answers.yahoo.com/question/index?qid=20121030083113AAAI1Zh

Many times computer users find it necessary to reinstall their operating systems. While this is a relatively simple task when using the installation discs, these may not always be accessible. One m... Read More »
http://www.ehow.co.uk/how_8489123_install-windows-xp-iso-dvd.html

If you have access to another computer w/a working DVD drive, you can transfer a bootable image to a USB stick & install from that.A simple copy won't work, though. You need to use software like W... Read More »
http://uk.answers.yahoo.com/question/index?qid=20121214090056AAYXQkk