Vboxmanage/compact: Unterschied zwischen den Versionen

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Reduce vdi file size size
Reduce vdi file size size


== Nullify free space ==
== Freien Speicherplatz bereinigen ==
=== Linux Guest ===
=== Linux ===
  dd if=/dev/zero of=/var/tmp/bigemptyfile bs=4096k
  dd if=/dev/zero of=/var/tmp/bigemptyfile bs=4096k
  rm /var/tmp/bigemptyfile  
  rm /var/tmp/bigemptyfile  
or
or
  telinit 1  
  telinit 1  
  mount -o remount,ro /dev/sda1 zerofree -v /dev/sda1  
  mount -o remount,ro /dev/sda1 zerofree -v /dev/sda1  


=== Windows Guest ===
=== Windows ===
# Run defrag in the guest (Windows only)
# Run defrag in the guest
# user [http://technet.microsoft.com/en-us/sysinternals/bb897443 SDelete] from Sysinternals
# user [http://technet.microsoft.com/en-us/sysinternals/bb897443 SDelete] from Sysinternals
  sdelete.exe c: -z
  sdelete.exe c: -z

Version vom 6. Januar 2023, 12:27 Uhr


Compact VirtualBox's VDI file size

Reduce vdi file size size

Freien Speicherplatz bereinigen

Linux

dd if=/dev/zero of=/var/tmp/bigemptyfile bs=4096k
rm /var/tmp/bigemptyfile 

or

telinit 1 
mount -o remount,ro /dev/sda1 zerofree -v /dev/sda1 

Windows

  1. Run defrag in the guest
  2. user SDelete from Sysinternals
sdelete.exe c: -z

Vboxmanage

Shutdown the guest VM

Linux Host

vboxmanage modifymedium --compact /path/to/thedisk.vdi 

Windows Host

VBoxManage.exe modifymedium --compact c:\path\to\thedisk.vdi

Links

  1. https://www.virtualbox.org/manual/ch08.html#vboxmanage-modifyvdi

Anwendung

# vboxmanage modifymedium --compact windows10.vdi
0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%