> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Out of disk space error when installing in a different drive than C:\

## Issue:

I get an out of disk space in C:\ when installing in D:\ drive.

## Applies to:

* nTop 3.9.3

## Cause:

The installer uses system folders that are located in the C:\ drive.

## Solution:

Installing nTop on the C:\ drive needs about 2.1 Gb of free space. Installing it on any other drive adds up to about 1.4 Gb of space used in the C:\ drive due to the files going into system folders that are located within the C:\ drive. Clearing up at least 1.4 Gb in C:\ solves this issue.

## Keywords:

*error space issue installation out of disk space*