ianoop
Tried installing from USB but but got some error (something like bootable partition not found), in desired partition.
Which means you haven't created /boot partition.
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Here's short & simple guide :
- Insert "Bootable Linux Pendrive".
- When it asks to select the install mode for eg: "Install Ubuntu alongside Windows 7" , "Install Ubuntu on entire Partition" ,etc. You will see last option saying
"Something else" : Click on that.
- Now manually allot partitions :
/boot (which includes kernel, 250 MB is more than enough)
/ (Root partition, 25 - 30 GB is more than enough even if you gonna install too many of apps)
/home (This partition should be quite big as it has many hidden configuration files & it's most used directory by user, I keep this partition around 115 GB : You can allot as per your use)
SWAP (This partition should be alloted memory 2x times that of your RAM size)
Click on "Next" & Ubuntu will be installed alongside Win7.
By The Way, I have already created a thread for that, I guess :
<a href="https://www.crazyengineers.com/threads/step-to-step-guide-to-install-linux.57668">Step-to-step guide to install Linux</a>