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## vdi-file-compacting.md

      
        
          
            
              
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                sinamomken
                / vdi-file-compacting.md
            
            
              Created
              July 21, 2018 15:20
                — forked from kuznero/vdi-file-compacting.md
            
              
                How to compact VirtualBox's VDI file size?
              
          
        
      
        
  
      
    Source: StackOverflow
1. Run defrag in the guest (Windows only)

2. Nullify free space:

With a Linux Guest run this:
sudo dd if=/dev/zero | pv | sudo dd of=/bigemptyfile bs=4096k
sudo rm -rf /bigemptyfile