Ubuntu: How to separate disk partition after complete installation?


I have following setup.i want a new separate 200gb partition. i'll try fdisk /dev/sda to command new partition via but i can't exactly.i need help

Disk /dev/sda: 500.1 GB, 500107862016 bytes      255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors      Units = sectors of 1 * 512 = 512 bytes      Sector size (logical/physical): 512 bytes / 4096 bytes      I/O size (minimum/optimal): 4096 bytes / 4096 bytes      Disk identifier: 0x000216a9       Device Boot      Start         End      Blocks   Id  System  /dev/sda1   *        2048   968587263   484292608   83  Linux  /dev/sda2       968589310   976771071     4090881    5  Extended  Partition 2 does not start on physical sector boundary.  /dev/sda5       968589312   976771071     4090880   82  Linux swap / Solaris  


You can move/resize/delete a partition in Ubuntu through gparted.Run the below commands in terminal to install gparted.

sudo apt-get install gparted  sudo gparted  

Please note that,by this method you can resize/delete a partition through gparted only if it was unmounted.

To resize/delete a mounted partition then you can use gparted-live-disk.


To change partitions they must not be mounted. I don't know whether fdisk will still work after unmounting /dev/sda1X, so I recommend the following solution:

Create a backup of your important data before doing this. Partitioning may harm existing partitions.

  1. Boot your Live Ubuntu (the one on your installation media)
  2. Open GParted (if not working: Alt+F2 -> sudo gparted)
  3. Change size of /dev/sdb1 (Actual device name may differ, just search the correct one)
  4. Create new partition
  5. Commit changes (may take a while)
  6. reboot

Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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