Resizing the root partition ( / ) is pretty straightforward using gparted in the live environment - I've done this myself for freeing up space for the installation of a second (or more) distro.
Just run LL in the live environment (using your LL installation DVD or USB stick), and use gparted (designated Partition Drives in the Menu). From the gparted window, highlight your root partition to be resized, click on the Partition tab in the toolbar at the top of the gparted window, and in its drop-down box click on Resize/Move option. Then enter the new size you want. Reboot, and everything should be fine. Shrinking the root partition will create unallocated space - you can leave this as it is, or add it to another partition, using gparted.
[size=1em]I've found that gparted can be used in the LL live environment to not only resize LL's root partition, but also to resize a Windows OS partition, though you may prefer to do this within the Windows OS itself, under the disk manager.[/size]
I haven't checked, but I think you may find further details on resizing partitions in LL's Help Manual - installed by default on your Desktop
Hope this helps
Cheers
Mike
Just run LL in the live environment (using your LL installation DVD or USB stick), and use gparted (designated Partition Drives in the Menu). From the gparted window, highlight your root partition to be resized, click on the Partition tab in the toolbar at the top of the gparted window, and in its drop-down box click on Resize/Move option. Then enter the new size you want. Reboot, and everything should be fine. Shrinking the root partition will create unallocated space - you can leave this as it is, or add it to another partition, using gparted.
[size=1em]I've found that gparted can be used in the LL live environment to not only resize LL's root partition, but also to resize a Windows OS partition, though you may prefer to do this within the Windows OS itself, under the disk manager.[/size]
I haven't checked, but I think you may find further details on resizing partitions in LL's Help Manual - installed by default on your Desktop

Hope this helps
Cheers
Mike
64bit OS (32-bit on Samsung[i] netbook) installed in [i]Legacy mode on MBR-formatted SSDs (except pi which uses a micro SDHC card):
2017 - Raspberry pi 3B (4cores) ~ [email protected] - LibreElec, used for upgrading our Samsung TV (excellent for the task)
2012 - Lenovo G580 2689 (2cores; 4threads] ~ [email protected] - LL3.8/Win8.1 dual-boot (LL working smoothly)
2011 - Samsung NP-N145 Plus (1core; 2threads) ~ Intel Atom [email protected] - LL 3.8 32-bit (64-bit too 'laggy')
2008 - Asus X71Q (2cores) ~ Intel [email protected] - LL4.6/Win8.1 dual-boot, LL works fine with kernel 4.15
2007 - Dell Latitude D630 (2cores) ~ Intel [email protected] - LL4.6, works well with kernel 4.4; 4.15 doesn't work
2017 - Raspberry pi 3B (4cores) ~ [email protected] - LibreElec, used for upgrading our Samsung TV (excellent for the task)
2012 - Lenovo G580 2689 (2cores; 4threads] ~ [email protected] - LL3.8/Win8.1 dual-boot (LL working smoothly)
2011 - Samsung NP-N145 Plus (1core; 2threads) ~ Intel Atom [email protected] - LL 3.8 32-bit (64-bit too 'laggy')
2008 - Asus X71Q (2cores) ~ Intel [email protected] - LL4.6/Win8.1 dual-boot, LL works fine with kernel 4.15
2007 - Dell Latitude D630 (2cores) ~ Intel [email protected] - LL4.6, works well with kernel 4.4; 4.15 doesn't work