4.6 States of VM

✅ States of the VM

✔️ Powerd off(Apagada)

✔️ Running(En ejecucion)

• using RAM, Harddisk…all resources in use
• if you want to run, should click on start button

✔️ Saved(Guardada/Hibernate)

• saves exact RAM state
• if you have a machine that is saved
• and if you want to go to the beggining
• clock on button discard
• discard: for unsaving machnies that you saved

✔️ Paused(Pausada)

• execution stopped, but machine stays in RAM
• give a small rest to your VM
• without freeing any resources
• but temporarily free CPU without closing apps

✔️ Aborted(Abortada)

• critical error here
• Aborted happens in two cases

• 1️⃣ Aborted happens bc the vdi file is not reachable

• ❓ Why my VM cannot reach the vdi?
• 1️⃣ maybe you deleted the vdi by mistake
• 2️⃣ my external disk has changed its name(its letter from D -> E)
• this happens when we create a VM in the external disk
• and the external changes its letter automatically
• and the state will be aborted
• bc the letter of the external disk depends on (1) the distribution of the internal disk
• (2) and the order of insertion
• 💊 change the letter back to what it was E -> D

• use command: diskmgmt.msc

• 2️⃣ Aborted also happens when I try to boot my VM in another RM
• with the old vbox file
• and I did not adopt the vbox file to my RM

✔️ Snapshot(Estado de instantanea)

• I have taken a shapshot, a recovery point
• shapshot = recovery point
• button restore is used for launching that recovery point

• button take is used for creating new recovery points

• when I take my machine to the recovery point
• the machine will not be in the state of “now”
• but it goes “back” to the past recovery point that was good

💡 How to create a Snapshot

• 1️⃣ Machine needs to be off
• 2️⃣ Click on the three dots

• 3️⃣ click on snapshot instantaea

• 4️⃣ and take snapshot tomar

• all the snapshots are saved in the folder indicated in configuration > general.advanced

💡 How to go to a recovery point

• in order to go to a recovery point,
• select the recovery point
• click on resotre
• Note: real state should be bold, same as the recovery point

💡 How to go delete recovery point

• click on delete

Snapshot 🆚 Screenshot

• Snapshot: recovery point of the machine bc now this state is perfect
• Screenshot: picture of your screen

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1️⃣

2️⃣

3️⃣

4️⃣

• 1️⃣
• 2️⃣
• 3️⃣
• 4️⃣ 👍🏻 👎🏻

⭐️⭐️⭐️ EXAM ⭐️⭐️⭐️
❓
👉🏻

😱 VirtualBox installation errors

1️⃣ c++ Redistinbutable Package Missing

• means an API is missing
• 💊 Go to microsoft webpage
• search and download the API
• then execture, double click
• and install the API

2️⃣ Traces of previous verions found

• problems bc of traes/remains leftovers of the old version

• If you have a previous version of VM in the computer
• and somebody deleted the old version

• traes/remains of the previous version of Virtual Box

• ✔️ Traces could be in two places
• (1) in C\Users\<user>\.VirtualBox
• enter that folder
• empty the folder, delete all the content
• we only empty the folder when the error appears

• if there is no error, do not empty the folder

• bc if you delete that folder with no reason,
• you will delete all the access to that VM

• you will have to rebuild the accesses

• If the .VirtualBox does not exist, it means previous versions of VM does not exist

• (2) in C\Windows\system32\drivers
• and serach files
• starting by VBox with extension .sys
• VBox*.sys
• * is a wildcard

• then delete

• again, also only delete when you are having problem
• if you do not have any problem, but delete,
• you will lose access to the VM

• and before deleting, communicate with your team that you are deleting them

• Note: All applications can have trace problems

• 💊 look for traces inside the C\Users\<user>\.<nameOfApplications>

• Note: after deleting traces
• good practice to uninstall Virtual Box then install again

3️⃣

4️⃣

• 1️⃣
• 2️⃣
• 3️⃣
• 4️⃣ 👍🏻 👎🏻

⭐️⭐️⭐️ EXAM ⭐️⭐️⭐️
❓
👉🏻