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I have a 1Tb hdd(internal in laptop) which I have divided in 750Gb (windows partition) and 100Gb ubuntu partition , my ubuntu OS is quite dull(over all performance including boot and multitasking) after 2 updates from 14.04 to 14.04 and 14.10 to 15.04. Now my main question is Should I reinstall by formatting and repartitioning drive giving 1Tb space to ubuntu entirely, since I want to use only ubuntu operating system. If no then how should I increase my system performance with ubuntu (and I seriously want to get rid of windows).
PS: (other hardware configuartion) Samsung Laptop with 6Gb ram and Quad core (4 * 2.5Ghz Intel i5 processor) Windows 7 Home Premium Preloaded with other recovery software's (which might affect system performance).