![]() ![]() The disk doesn't know about the partitions and especially which of them you want to increase, since there could be multiple ones on the same (virtual) disk. Step 2: Increase the partition inside your VM When the host is running on Windows, you may need to change the directory using the cd command to the VirtualBox program files folder first, where those cli tools are located. On GNU/Linux, the vboxmanage is in the global $PATH. You can increase the VHD using the command line, where -resize requires the new size in MB, not the quota you'd like to add! Let's say you have a 20 GB VHD and want to add 20 GB, so the new size is 40 GB, then you'll using the following command: vboxmanage modifyhd -resize 40960 Click on the desired disk and select it's new size on the bottom, then click Apply. On the right side, you'll see a list of the virtual hard disks of all VMs. Start the VirtualBox Manager and on File > Tools > Virtual Media Manager. It's not required to do both, just decide which way you're more comfortable with, they'll generate the same result. Since a while (V4), you can do this using both the GUI and the CLI. Creating a backup is highly recommended.So you need to delete the snapshots first (recommended) or increase it for all snapshots (considered risky) If the VM has any shapshots, you can increase the virtual disk, but not the partition inside of the VM (no free space visible).Only increasing is supported, no shrinking!.Now boot that virtual machine and extend the desired partition following this stepsīefore any modifications are done, you should be aware of the limitations: Now you are ready to build the command that will help you solve the problem Some simple math will allow you to get the desired new size + ģ9891 MB + 36864 MB = 76755 MB I can increase that WIN81_64BITS.vdi it by 36GB without any issues Since in my case I have 76GB free on /dev/sda2 $ df -h Filesystem Size Used Avail Use% Mounted on Lets determine how much physical space is left on your real machine (Linux) Keep the location of the VDI file you want to resize /home/anonyn/WIN81_64BITS.vdi In my case it lists only this one UUID: db753df8-de41-425b-b452-fab84f1f8b71 Lets see the currently existing virtual hard drives of your virtual box(es)
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