[New nanny-level tutorial in 2023] Solve the problem of insufficient disk space in Ubuntu file system low disk space on filesystem root

[New nanny-level tutorial in 2023] Solve the problem of insufficient disk space in Ubuntu file system low disk space on filesystem root

** Solve the problem of low disk space on filesystem root in Ubuntu22.04 file system **

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Contents of this article

• Preface
• Solution steps
• • Step 1: Check disk space usage
• Step 2: Install partition tools
• Step 3: Start the partition tool
• Step 4: Operating Partitions
• Step 5: read-only cannot change disk space
• Step 6: Expand the file system size
• Step 7: Confirm if the verification is successful
• Check whether the expansion is successful
• Summarize

Preface

The following information was prompted when starting Ubuntu20.04 recently:
Low Disk Space on “Filesystem root”
The volume “Filesystem root” has only 542.5MB diskspace remaining.

So how to deal with it? Just increase the disk capacity of the file system.

First, expand the capacity in Vmware.

Suppose I originally used 20G, then I only need to change it to 50G here first, and then follow the steps.

Solution steps

Step 1: Check disk space usage

First use the df -h command to check our disk space usage. You can see that /dev/sda3 is full, so proceed next.

Step 2: Install partition tools

The partition tool command is as follows

 
    sudo apt-get install gparted -y
    

Step 3: Start the partition tool

 
    sudo gparted
    

Start this tool

so that you can see which disk space has a lot of unallocated space, and then disassemble and merge it.

Step 4: Operating Partitions

As you can see, there is 30GB of unallocated area at this time.

Step 5: read-only cannot change disk space

Many friends may encounter the following problem, that is, they can only be expanded in the mounted state.

Select information to view.

At this point you can see my mounting location as follows. Note: The mounting locations are separated by , which is easy to ignore /. Open the terminal

with root privileges and perform operations. Remount the read and write permissions of the folder directory.

 
    sudo -i
    mount -o remount -rw /
    mount -o remount -rw /var/snap/firefox/common/host-hunspell
    

Follow the instructions below:

Refresh the device in gparted in the upper left corner to operate.

Step 6: Expand the file system size

Right-click to select sda3, select resize, and you can perform the following operations. Drag the right side to operate, and you can flexibly adjust the size.

Step 7: Confirm if the verification is successful

Click the green icon and then apply.

Check whether the expansion is successful

Enter df -h to check whether the expansion is successful.

Summarize

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