Vboxmanage/compact: Unterschied zwischen den Versionen

Version vom 6. Januar 2023, 11:10 Uhr

Compact VirtualBox's VDI file size

To reduces the vdi filesize size

Steps

Run defrag in the guest (Windows only)
Nullify free space:

Linux Guest

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 Guest

download SDelete from Sysinternals
and run this:

sdelete.exe c: -z

replace C: with the drive letter of the VDI

Shutdown the guest VM

Now run VBoxManage's modifymedium command with the --compact option:

Linux Host

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

Windows Host

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

Mac Host

VBoxManage modifymedium --compact /path/to/thedisk.vdi 
VBoxManage is located here: /Applications/VirtualBox.app/Contents/MacOS/VBoxManage

Anwendung

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

@@ Zeile 1: / Zeile 1: @@
+== Compact VirtualBox's VDI file size ==
+To reduces the vdi filesize size
+; Steps
-You have to do the following steps:
 # Run defrag in the guest (Windows only)
 # Nullify free space:
-With a '''Linux Guest''' run this:
+; Linux Guest'''
   dd if=/dev/zero of=/var/tmp/bigemptyfile bs=4096k
   rm /var/tmp/bigemptyfile
@@ Zeile 14: / Zeile 14: @@
   mount -o remount,ro /dev/sda1 zerofree -v /dev/sda1
-With a '''Windows Guest'''
+; Windows Guest
 # download [http://technet.microsoft.com/en-us/sysinternals/bb897443 SDelete] from Sysinternals
 # and run this:
   sdelete.exe c: -z ''
+''replace C: with the drive letter of the VDI''
+# Shutdown the guest VM
-'''replace C: with the drive letter of the VDI'''
-Shutdown the guest VM
 # Now run VBoxManage's [https://www.virtualbox.org/manual/ch08.html#vboxmanage-modifyvdi modifymedium] command with the <code>--compact</code> option:
-With a '''Linux Host''' run this:
+; Linux Host
   vboxmanage modifymedium --compact /path/to/thedisk.vdi
-With a '''Windows Host''' run this:
+; Windows Host
   VBoxManage.exe modifymedium --compact c:\path\to\thedisk.vdi
-With a '''Mac Host''' run this:
+; Mac Host
   VBoxManage modifymedium --compact /path/to/thedisk.vdi
+  ''VBoxManage is located here: /Applications/VirtualBox.app/Contents/MacOS/VBoxManage''
-'''VBoxManage is located here: /Applications/VirtualBox.app/Contents/MacOS/VBoxManage'''
-This reduces the vdi size.
+== Anwendung ==
   # vboxmanage modifymedium --compact windows10.vdi
 %...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%