Currently dual booting Windows 8 and Linux Mint 14, sooner or later I will give more space to my Linux system.
Is resizing my Linux partition from the beginning a safe operation ?
If yes, could you provide the name of an utility that would help me achieve this ?
I am asking this because systematically when I did that under Windows using Acronis Disk Director the system was broken, I couldn't boot to Windows anymore because of an NTLDR missing. So unless I thought in advance to make a recovery disk I was unable to use it again !

live cdsuch asubuntuorsystemrescu, and rungpartedand do resizing.... – Mohsen Pahlevanzadeh Feb 1 at 1:40