1 00:00:00,890 --> 00:00:07,730 Now that we created our virtual machines it's a really good idea to take snapshots of them a snapshot 2 00:00:07,760 --> 00:00:14,450 allows you to store the state of the current virtual machine so it allows you to go back in time or 3 00:00:14,450 --> 00:00:20,180 go forward to a certain state after you go back so you can think of it as bookmarks. 4 00:00:20,180 --> 00:00:25,760 For example now we can take snapshots of our fresh installation of the operating systems and in the 5 00:00:25,760 --> 00:00:32,180 future if we update or configure something or break something you can literally just go back to the 6 00:00:32,180 --> 00:00:38,420 fresh install or go back to factory settings if you want to call it then if you did something there 7 00:00:38,420 --> 00:00:43,820 and then you wanted to go back to your updated system then you can go back to the updated system as 8 00:00:43,820 --> 00:00:49,460 well so you can literally take a snapshot whenever you want to store the state of the machine and then 9 00:00:49,460 --> 00:00:52,820 you can go back and forth between these states. 10 00:00:53,040 --> 00:00:54,540 Now I'll show you how to do that. 11 00:00:54,540 --> 00:00:56,550 I have Kelly live next right here. 12 00:00:56,550 --> 00:01:00,270 The one that we installed and it's very easy to create a snapshot for it. 13 00:01:00,300 --> 00:01:08,800 All you have to do is just go on the snapshots here and click on the camera icon then it's going to 14 00:01:08,800 --> 00:01:10,620 ask you to call the snapshot something. 15 00:01:10,630 --> 00:01:17,340 So I'm just going to call it fresh install and I'm just gonna give it a description saying it's a fresh 16 00:01:17,340 --> 00:01:19,630 snapshot with no updates. 17 00:01:19,860 --> 00:01:24,120 It's always a good idea to give a good name and good description so that in the future you can actually 18 00:01:24,120 --> 00:01:26,640 remember what the snapshot stand for. 19 00:01:27,300 --> 00:01:34,280 So now that I'm done I'm just going to click on OK and now you can see that we have the current state. 20 00:01:34,330 --> 00:01:40,240 So whatever you do in here you can update you can install programs you can install libraries. 21 00:01:40,390 --> 00:01:44,860 And then if you break something or if you ever wanted to go back to the fresh install you can just come 22 00:01:44,860 --> 00:01:48,190 back click on the fresh install and restore. 23 00:01:48,190 --> 00:01:49,190 So let's see now. 24 00:01:49,210 --> 00:01:54,040 I'm just gonna go back to the details as normal and then we're gonna start our virtual machine. 25 00:01:54,100 --> 00:01:55,480 I'll just show you an example now 26 00:02:02,580 --> 00:02:09,790 so let me just create a new directory in here so let's imagine that you actually updated the system 27 00:02:09,790 --> 00:02:14,260 now in the future we're going to talk about updating the system and I'm going to tell you that when 28 00:02:14,260 --> 00:02:19,570 you update there is a good chance that some libraries some programs will not be as up to date as the 29 00:02:19,570 --> 00:02:21,280 libraries that will be installed. 30 00:02:21,280 --> 00:02:24,310 And then these programs may might start giving you issues. 31 00:02:24,310 --> 00:02:28,720 Now if you had the issues you can put them into discussion and then I'll help you with them but some 32 00:02:28,720 --> 00:02:34,020 cases I'll tell you that you need to go back or downgrade to the older version without the update. 33 00:02:34,030 --> 00:02:39,190 So all you'll have to do is just get back to the fresh installation to your refresh snapshot. 34 00:02:39,190 --> 00:02:44,230 So now just created the new file just to show you that once you actually go back everything will go 35 00:02:44,230 --> 00:02:48,090 back to the way it was before the changes that you made. 36 00:02:48,100 --> 00:02:49,360 So I'm just gonna turn off Carly 37 00:02:53,910 --> 00:02:59,720 and now if we go back to these snapshots you'll see that we have our current state. 38 00:02:59,730 --> 00:03:02,760 This state has been changed so it's a changed state. 39 00:03:02,760 --> 00:03:07,350 Now let's say that you updated and the update to our successful so often was broken and you are happy 40 00:03:07,350 --> 00:03:07,620 with it. 41 00:03:08,070 --> 00:03:13,440 So what you should do is you should just come in and click on the camera icon again to create another 42 00:03:13,440 --> 00:03:14,460 snapshot. 43 00:03:14,460 --> 00:03:20,950 And we're gonna call this one updated system and then you can just put the date if you want to. 44 00:03:21,120 --> 00:03:27,500 And then I'm just gonna put the description updated with no problems so I'm gonna click Okay. 45 00:03:29,570 --> 00:03:31,430 And you can see that we have two snapshots. 46 00:03:31,430 --> 00:03:33,530 We have the first one which is our fresh install. 47 00:03:34,100 --> 00:03:39,290 And then we updated our system and we have an updated snapshot of an updated system. 48 00:03:39,290 --> 00:03:44,510 So now let's say that after you updated and you thought everything is okay you are using the machine 49 00:03:44,510 --> 00:03:45,640 and you have problems. 50 00:03:45,680 --> 00:03:48,110 So you wanted to go back to the fresh installation. 51 00:03:48,110 --> 00:03:54,110 All you have to do is just click on the fresh install and you can see that the restart icon right here 52 00:03:54,140 --> 00:03:59,330 just click that and now it restored me to the fresh installation. 53 00:03:59,330 --> 00:04:05,030 So now if I start the candy machine you'll see that the new directory that we created will disappear 54 00:04:09,280 --> 00:04:13,600 now as you can see we're back to where we were without the new directory without anything. 55 00:04:13,600 --> 00:04:21,750 So we are actually back to the fresh installation of candy to when we actually took the snapshot. 56 00:04:21,760 --> 00:04:26,530 So now I'm gonna show you another example so let's say you went back in time and you went back to your 57 00:04:26,530 --> 00:04:32,860 fresh installation and then for some reason you wanted to go back to your updated state to see if you 58 00:04:32,860 --> 00:04:37,090 can fix the issue if I suggested the solution or if you're at the solution online and you want to go 59 00:04:37,090 --> 00:04:41,530 back and fix the issue that you had after the update or for any other reason maybe you just wanted to 60 00:04:41,530 --> 00:04:45,090 go back to a different state it wasn't an updates estate. 61 00:04:45,100 --> 00:04:46,750 I'm just given an example with the update. 62 00:04:47,260 --> 00:04:50,500 So if you want to go back to a future state you can still do that. 63 00:04:50,560 --> 00:04:57,340 So all you have to do is just again click on the updated click on the Restore and we don't want to create 64 00:04:57,370 --> 00:05:01,640 a new snapshot from the current state because the current state is the updated state. 65 00:05:01,750 --> 00:05:09,640 So we're going to restore this starting machine and you'll see that we'll be back to the updated state 66 00:05:09,820 --> 00:05:12,310 to where we had the new directory created. 67 00:05:12,310 --> 00:05:19,390 So we're actually going to go back in the future now and as you can see now we have our test directory. 68 00:05:19,470 --> 00:05:23,710 So we're back to the state where we updated the system. 69 00:05:24,030 --> 00:05:29,520 So again as you can see the snapshots can be really useful they can allow you to store bookmarks or 70 00:05:29,520 --> 00:05:34,350 states of the operating system so you can actually have different configurations and you can switch 71 00:05:34,350 --> 00:05:35,880 between them as you want.