Fdisk

[Gokan Atmaca <linux.gokan@gmail.com>]

Hello

Debian is running as a VM on the KVM. I enlarged the disk with QEMU.
But the disk is as follows.
So he did not grow up.

Pre:
root@debian:/home/gokan# fdisk  -l

Disk /dev/sda:[b] 40 GiB[/b], 42949672960 bytes, 83886080 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: 0x6845f24a

Device     Boot    Start      End  Sectors  Size Id Type
/dev/sda1  *        2048 80383999 80381952 38.3G 83 Linux
/dev/sda2       80386046 83884031  3497986  1.7G  5 Extended
/dev/sda5       80386048 83884031  3497984  1.7G 82 Linux swap / Solaris

root@debian:/home/gokan#
root@debian:/home/gokan# df -Th
Filesystem     Type      Size  Used Avail Use% Mounted on
/dev/sda1      ext4       38G  908M   35G   3% /
udev           devtmpfs   10M     0   10M   0% /dev
tmpfs          tmpfs     201M  4.4M  196M   3% /run
tmpfs          tmpfs     501M     0  501M   0% /dev/shm
tmpfs          tmpfs     5.0M     0  5.0M   0% /run/lock
tmpfs          tmpfs     501M     0  501M   0% /sys/fs/cgroup

Post:
root@debian:/home/gokan# fdisk -l

Disk /dev/sda:[b] 50 GiB[/b], 53687091200 bytes, 104857600 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: 0x6845f24a

Device     Boot    Start      End  Sectors  Size Id Type
/dev/sda1  *        2048 80383999 80381952 38.3G 83 Linux
/dev/sda2       80386046 83884031  3497986  1.7G  5 Extended
/dev/sda5       80386048 83884031  3497984  1.7G 82 Linux swap / Solaris

root@debian:/home/gokan#
root@debian:/home/gokan# df -Th
Filesystem     Type      Size  Used Avail Use% Mounted on
/dev/sda1      ext4       38G  908M   35G   3% /
udev           devtmpfs   10M     0   10M   0% /dev
tmpfs          tmpfs     201M  4.4M  196M   3% /run
tmpfs          tmpfs     501M     0  501M   0% /dev/shm
tmpfs          tmpfs     5.0M     0  5.0M   0% /run/lock
tmpfs          tmpfs     501M     0  501M   0% /sys/fs/cgroup

How can I grow this disc?