Step 1: follow the steps below to increase your disk size, i am currently using 200 GB, but I want to increase it to 300 GB.
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Step 2: check the disk size -> it is still 200 GB
fdisk -l
Step 3: run fdisk utility
fdisk /dev/sda
Step 4: Type p to print the current partition table and identify the partition you need to resize (e.g., /dev/sda1).
Step 5: Type d and hit Enter to delete the partition (/dev/sda1).
Step 6: Type n and hit Enter to create a new partition:
For the Partition Type: Choose primary.
For the Partition Number: Type 1 and press Enter.
For the First Sector: It is crucial to use the same starting sector as before (from our fdisk -l screenshot, it’s 2048), so type 2048 and press Enter
For the Last Sector, simply press Enter to accept the default
Do you want to remove the signature? The message indicates that the new partition overlaps with the existing filesystem (ext4 signature) from the previous configuration. Since you are re-creating the partition to expand it, do not remove the ext4 signature, as this could corrupt your existing data. So type N (No) and press Enter.
Step 7: Write the changes by typing w and pressing Enter.
Step 8: Once done, run the following command to resize the filesystem