I know, question concerning the same problem has already been asked, but I address a different issue. Following is the output snippet of fdisk.
akshayj@akshayj-ThinkPad-T450:~$ sudo fdisk -l /dev/sda
Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 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
Disklabel type: dos
Disk identifier: 0xe7ba95a9
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 3074047 3072000 1.5G 7 HPFS/NTFS/exFAT
/dev/sda2 3074048 478832639 475758592 226.9G 7 HPFS/NTFS/exFAT
/dev/sda3 947175424 976771071 29595648 14.1G 7 HPFS/NTFS/exFAT
/dev/sda4 478834686 947175423 468340738 223.3G 5 Extended
/dev/sda5 478834688 939409407 460574720 219.6G 83 Linux
/dev/sda6 939411456 947175423 7763968 3.7G 82 Linux swap / Solaris
Partition 4 does not start on physical sector boundary.
Main Issue:-
I know that the solution to the above problem is repartitioning using gparted, but since /dev/sda4 is just a container partition for sda5 and sda6, shouldn't I just ignore it, or will I face issues and should consider repartitioning.