The low disk space error is related with many kinds of possible causes that you may delete trash files, disable system restore points to reclaim disk space or expand drive with free tool.
PC shows low disk space but nothing to delete
There are many hidden files that take place your hard disk space, especially the system files such as the temp files (it may take dozens of MB disk space), system restore points (it could take up to several GB disk space) etc.
#1 Disk Cleanup to delete files
To run disk cleanup and delete files on a Windows computer, follow these steps:
Windows will delete the files and free up space on your hard drive. This may take a few minutes depending on the number and size of the files that you selected.
#2 Remove system restore points
Windows periodically back up the system and these backup files will use some disk space. All backup files, excluding the most recent restore point, can be deleted. Don't worry, it's safe to delete the old restore points since even if the system malfunctions, you can still restore the computer to the most recent functional state.
Step 1: Right-click the C drive in "This Computer" and choose "Properties".
Step 2: Choose "Clean up system files" in the new window.
Step 3: Click "More Options" in the new box, then "Clean up" under "System Restore and Shadow Copies".
More options not showing up? You need to open disk cleanup in this following way instead of the c drive properties.
#3 Move program files from c to D or another drive
Moving program files from the C: drive to the D: drive can be a bit tricky, as simply dragging and dropping the files may not work, as the programs may be dependent on other files and settings stored on the C: drive.
Video - how to move install files from c to another drive safely
Here are the general steps you can follow to move program files from C: to D:
Once the program(s) are installed on the D: drive, you can delete any leftover files on the C: drive.
It's important to note that not all programs can be moved to a different drive, as some may have dependencies on the system drive. In addition, moving programs in this manner can be risky and may cause unexpected issues, so it's always a good idea to back up your data before attempting to move anything.
It's awakward when there are plenty of disk space however Windows computer reported there is not enough space on your disk partition.
There are two kinds of situations for this scenario.
#1, The disk is full, but it has lots of unallocated space
It happens when your disk is 4TB or ABOVE, however when you initialize it to MBR disk which can only hold up to 2TB disk space, then your disk can use up to 2TB disk space.
->To use your disk full space, you may convert your disk from mbr to gpt without losing data using free tool Partition Resizer. (Windows disk management or built-in tools can only convert disk to gpt by deleting all volumes and all data)
#2, Free up disk space needed
When the disk is full, there are several causes that may take up the disk space
When the computer storage media shows low disk space error, you may add 100+GB disk space to the drive if there are free space from another drive on the same disk using free tool Partition Resizer.
Video: how to shrink a volume and expand another one without losing data