sudo fdisk -l /dev/sda
Disk /dev/sda: 298.1 GiB, 320072933376 bytes, 625142448 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x2138c9e4

Device     Boot   Start       End   Sectors   Size Id Type
/dev/sda1  *       2048    999423    997376   487M 83 Linux
/dev/sda2       1001470 625141759 624140290 297.6G  5 Extended
/dev/sda5       1001472 625141759 624140288 297.6G 83 Linux

df -h
Filesystem                   Size  Used Avail Use% Mounted on
udev                         3.9G     0  3.9G   0% /dev
tmpfs                        787M  9.5M  778M   2% /run
/dev/mapper/ubuntu--vg-root  286G  241G   30G  89% /
tmpfs                        3.9G  109M  3.8G   3% /dev/shm
tmpfs                        5.0M  4.0K  5.0M   1% /run/lock
tmpfs                        3.9G     0  3.9G   0% /sys/fs/cgroup
/dev/loop2                   237M  237M     0 100% /snap/pycharm-community/64
/dev/loop1                    87M   87M     0 100% /snap/core/4917
/dev/loop3                   142M  142M     0 100% /snap/skype/38
/dev/loop0                    87M   87M     0 100% /snap/core/4650
/dev/loop4                   138M  138M     0 100% /snap/skype/33
/dev/loop7                    87M   87M     0 100% /snap/core/4830
/dev/loop6                   133M  133M     0 100% /snap/skype/41
/dev/loop8                   240M  240M     0 100% /snap/pycharm-community/60
/dev/loop5                   233M  233M     0 100% /snap/pycharm-community/62
/dev/sda1                    472M  112M  336M  25% /boot
tmpfs                        787M   68K  787M   1% /run/user/1000