Ubuntu increase disk size

erik · September 2, 2024, 6:08pm

To increase the size of the /dev/sda2 partition from 20 GB to 100 GB, you need to resize both the partition and the filesystem. Here are the steps to achieve this:

Steps to Resize the Partition and Filesystem

Backup Your Data:
- Always ensure you have a complete backup of your data before making any changes to disk partitions.
Use parted to Resize the Partition:
- Open a terminal and use the parted command to resize the partition:
```
sudo parted /dev/sda
```
- Within the parted interactive shell, resize the second partition (/dev/sda2) to use the full disk space:
```
(parted) resizepart 2 100%
```
- Confirm the operation if prompted. This command will extend the partition to the maximum available size on the disk.
Exit parted:
- Type quit to exit the parted utility.
Resize the Filesystem:
- After resizing the partition, you need to resize the filesystem to occupy the newly allocated space. For an ext4 filesystem, use:
```
sudo resize2fs /dev/sda2
```
- This command will adjust the filesystem to fill the entire partition.
Verify the Changes:
- Use the df -h command to check that the filesystem now uses the full disk space:
```
df -h /dev/sda2
```

By following these steps, you can successfully increase the size of the /dev/sda2 partition to utilize the full 100 GB of disk space on your Ubuntu system. Always ensure you have a backup of your data before proceeding with disk operations, as they can be risky.