Summary of virtual box usage problems

Catalog

Virtualbox Prompt inaccessible / inaccessible

ubuntu The interface prompts dev/sda1 contains a file system with error, Tips initramfs

virtualbox The blue screen will be displayed after startup

Prompt after startup  welcome to emergency mode

VirtualBox Adding xxx.vdi Time report uuid error

Zoom in and out of the virtual machine ui Interface stuck

ssh Log in to the virtual machine

ssh Cannot use... When logging in root user

apt install Tips unable to lock the administration directory

Virtual disk space expansion

Command line configuration virtualbox

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Virtualbox Prompt inaccessible / inaccessible

If virtualbox manager The interface displays a similar interface

resolvent ： According to the prompt , find PCieVM1.vbox The path to this file ,ll The following information will be displayed , It can be seen that PCieVM1.vbox The file size is 0, And one more PCieVM1.vbox-prev The file of . therefore , direct mv PCieVM1.vbox-prev PCieVM1.vbox You can solve the problem .

If virtualbox The tips are as follows error, It is probably the same problem as above , here , Close this pop-up window , find PCieVM1.vbox The path to this file , Then perform the above operation .

If virtualbox Note the following error , According to the prompt , Get into   /home/hao.config/VirtualBox Folder , I found something similar to the above ,virtualBox.xml File size is 0, therefore   mv virtualBox.xml-prev  virtualBox.xml  You can solve the problem .

ubuntu The interface prompts dev/sda1 contains a file system with error, Tips initramfs

Solutions refer to https://blog.csdn.net/u011007997/article/details/90475633

virtualbox The blue screen will be displayed after startup

Solutions refer to  https://forums.virtualbox.org/viewtopic.php?f=6&t=80178

Prompt after startup  welcome to emergency mode

resolvent ：https://blog.csdn.net/qq_30500113/article/details/81697937 , You can find  /etc/fstab Be rewritten .

 

VirtualBox Adding xxx.vdi Time report uuid error

If the same user uses the same vdi image File installs two ubuntu virtual machine , That's the problem . You can enter your xxx.vdi In the path of , perform VBoxManage internalcommands sethduuid  xxx.vdi , modify uuid that will do .

 

Zoom in and out of the virtual machine ui Interface stuck

It may be set at this time display The virtual memory is too small , Just set it larger . You can also use the following command to change , among 32 That's what you need to set memory size .

VBoxManage modifyvm YOUR_VBOX_MACHINE_NAME --vram 32

ssh Log in to the virtual machine

If a computer is used by multiple users virtualbox, And these users use the same image (xxx.vdi) file , At this time due to image In the document ip address identical , In order to distinguish individual users , You need to configure network by NAT The way .

If there is only one user on a physical machine , You can select the bridging method

ssh Cannot use... When logging in root user

 ssh Login time , If non root Users can log in normally , But use root The account cannot be logged in , You can refer to    Ubuntu SSH root Sign in Permission denied error

install ssh If something goes wrong , Reference resources    https://blog.csdn.net/lyc0424/article/details/102555121

 

apt install Tips unable to lock the administration directory

explain apt Locked ,ps -ef |grep apt Find the corresponding pid,kill that will do

 

Virtual disk space expansion

Reference resources  https://my.oschina.net/u/4414208/blog/3720000

The first 1 Step , Add... In the management interface vdi Virtual hard disk size of . Be careful ： This step requires shutting down the virtual machine .

The first 2 Step , Start virtual machine , stay terminal perform sudo apt install gparted; sudo gparted

The first 3 Step ：resize /dev/sda1, And save the configuration ( spot √ )

The first 4 Step ：reboot Restart the virtual machine ,df -lh Check the disk space .

 

Command line configuration virtualbox

Virtualbox Provides a full set of command lines to configure virtual machines , For example, modify the virtual machine netport,core Count , Virtual memory and so on .

Official document reference https://www.virtualbox.org/manual/ch08.html