WEBVTT 1 00:00:00.180 --> 00:00:01.740 In this lesson, I'm going to show you 2 00:00:01.740 --> 00:00:03.390 how you can configure the BIOS 3 00:00:03.390 --> 00:00:05.910 if you're using it in one of your systems 4 00:00:05.910 --> 00:00:08.160 For this demonstration, I'm going to be using 5 00:00:08.160 --> 00:00:12.450 a ThinkStation P410 BIOS to show you how this works, 6 00:00:12.450 --> 00:00:15.390 but most BIOS are going to operate pretty much the same way. 7 00:00:15.390 --> 00:00:17.430 You just may see more or less options 8 00:00:17.430 --> 00:00:19.260 depending on your specific motherboard 9 00:00:19.260 --> 00:00:21.180 and your particular computer. 10 00:00:21.180 --> 00:00:22.860 Our first option that we're presented with 11 00:00:22.860 --> 00:00:24.720 is what language we want to use. 12 00:00:24.720 --> 00:00:25.860 Now, in this particular system, 13 00:00:25.860 --> 00:00:28.620 they do support both English and French, 14 00:00:28.620 --> 00:00:31.020 and I'm going to use English because that's what I speak. 15 00:00:31.020 --> 00:00:33.030 Under that we have our System Summary. 16 00:00:33.030 --> 00:00:34.410 If you select System Summary, 17 00:00:34.410 --> 00:00:36.240 you'll arrow down and then hit enter. 18 00:00:36.240 --> 00:00:39.210 It will tell you a little bit about this particular system. 19 00:00:39.210 --> 00:00:40.500 Now this is a server system, 20 00:00:40.500 --> 00:00:42.720 it's using an Intel Xenon processor. 21 00:00:42.720 --> 00:00:45.090 It operates at 2.6 gigahertz. 22 00:00:45.090 --> 00:00:46.920 We can see that it has four cores. 23 00:00:46.920 --> 00:00:48.960 So this is a multi-core CPU. 24 00:00:48.960 --> 00:00:50.040 And then in terms of memory, 25 00:00:50.040 --> 00:00:53.190 you can see we have about 132 two gigabytes installed, 26 00:00:53.190 --> 00:00:56.760 or 131072 megabytes. 27 00:00:56.760 --> 00:00:57.900 When we look at the bus speed, 28 00:00:57.900 --> 00:01:00.780 this memory is operating at 2133 megahertz. 29 00:01:00.780 --> 00:01:01.830 And as we keep moving down, 30 00:01:01.830 --> 00:01:03.720 you can see what is enabled or disabled 31 00:01:03.720 --> 00:01:06.150 and what's operating on this particular system. 32 00:01:06.150 --> 00:01:07.440 As we go down to the drives, 33 00:01:07.440 --> 00:01:09.270 you'll see there are two SATA drives. 34 00:01:09.270 --> 00:01:11.730 One is a hard disk drive for our operating system 35 00:01:11.730 --> 00:01:14.100 and one is a CD/DVD that we can use 36 00:01:14.100 --> 00:01:15.870 to install software and other things 37 00:01:15.870 --> 00:01:17.700 using that optical drive. 38 00:01:17.700 --> 00:01:20.970 If I want to go back to the main menu, I'll simply hit escape. 39 00:01:20.970 --> 00:01:22.500 Next, we can go down and we can set 40 00:01:22.500 --> 00:01:24.270 our date and time of the system. 41 00:01:24.270 --> 00:01:25.860 On this particular system, you can see 42 00:01:25.860 --> 00:01:27.900 it is just after six o'clock at night 43 00:01:27.900 --> 00:01:32.670 on the 16th of July, 2022 as I'm filming this video. 44 00:01:32.670 --> 00:01:34.410 Next, we're going to go here and you can see 45 00:01:34.410 --> 00:01:35.670 that we have a setup mode 46 00:01:35.670 --> 00:01:38.070 and we can set this as either text or graphic. 47 00:01:38.070 --> 00:01:41.310 Some BIOSes will support a minimal graphical display. 48 00:01:41.310 --> 00:01:43.860 I'm going to keep it in text for our purposes here 49 00:01:43.860 --> 00:01:46.530 and then Setup Content is either Basic or Advanced 50 00:01:46.530 --> 00:01:47.400 and we'll keep it Basic 51 00:01:47.400 --> 00:01:49.470 so we have less settings to look through. 52 00:01:49.470 --> 00:01:51.000 As you look through the bottom there, 53 00:01:51.000 --> 00:01:52.950 you can also see some other summary data 54 00:01:52.950 --> 00:01:54.690 such as the type of system it is. 55 00:01:54.690 --> 00:01:57.750 If it has a Mac address for its ethernet or network card. 56 00:01:57.750 --> 00:02:01.260 It's system ID and other key information like that. 57 00:02:01.260 --> 00:02:02.970 Next, we're going to go enter the devices 58 00:02:02.970 --> 00:02:05.220 and to do that, we're just going to hit the right arrow key, 59 00:02:05.220 --> 00:02:07.170 which will move over to the Device tab. 60 00:02:07.170 --> 00:02:08.400 And from here, we can configure 61 00:02:08.400 --> 00:02:10.620 all sorts of different things for this system, 62 00:02:10.620 --> 00:02:14.010 including audio, video, network, USB, 63 00:02:14.010 --> 00:02:16.230 SATA and Thunderbolt connections. 64 00:02:16.230 --> 00:02:18.720 We're not going to go through every single sub menu option, 65 00:02:18.720 --> 00:02:20.280 because that would take us hours. 66 00:02:20.280 --> 00:02:21.570 But instead, I want to point out 67 00:02:21.570 --> 00:02:23.220 a couple of highlights to you. 68 00:02:23.220 --> 00:02:24.390 And the one I really want to cover 69 00:02:24.390 --> 00:02:26.790 is the USB Configuration tab. 70 00:02:26.790 --> 00:02:28.350 Now, the reason for this is I mentioned 71 00:02:28.350 --> 00:02:30.780 that your BIOS and UEFI can be configured 72 00:02:30.780 --> 00:02:33.570 to enable or disable USB devices. 73 00:02:33.570 --> 00:02:36.450 So, if I was worried about malware going into my system 74 00:02:36.450 --> 00:02:38.280 or data going out of my system, 75 00:02:38.280 --> 00:02:40.170 I can actually arrow down to this, 76 00:02:40.170 --> 00:02:42.360 hit enter and then disable that. 77 00:02:42.360 --> 00:02:44.220 By doing this, this has now disabled 78 00:02:44.220 --> 00:02:47.130 all the USB ports on this particular system. 79 00:02:47.130 --> 00:02:50.550 Now, if I'm using a USB keyboard or a mic or a webcam, 80 00:02:50.550 --> 00:02:52.410 all of those will no longer work. 81 00:02:52.410 --> 00:02:54.660 And so, I probably don't want to configure it like this 82 00:02:54.660 --> 00:02:56.760 even though this is the most secure. 83 00:02:56.760 --> 00:02:59.760 So, I'm going to go ahead and enable those USB ports again. 84 00:02:59.760 --> 00:03:01.740 And instead, we're going to cycle down 85 00:03:01.740 --> 00:03:03.540 all the way down here where it says 86 00:03:03.540 --> 00:03:06.090 USB Mass Storage Driver Support. 87 00:03:06.090 --> 00:03:09.090 Now in this case, I can go and select Disabled here. 88 00:03:09.090 --> 00:03:12.180 And when I do this, it means if I take a USB thumb drive 89 00:03:12.180 --> 00:03:13.590 or an external hard drive 90 00:03:13.590 --> 00:03:15.570 and plug it into one of my USB ports, 91 00:03:15.570 --> 00:03:17.370 the operating system is not going to be able 92 00:03:17.370 --> 00:03:19.620 to read and write data from it. 93 00:03:19.620 --> 00:03:22.260 But if I plug something in like a keyboard or a mouse, 94 00:03:22.260 --> 00:03:24.540 those are not considered mass storage devices 95 00:03:24.540 --> 00:03:26.250 and they will still operate. 96 00:03:26.250 --> 00:03:28.710 And so, this is a very secure way of setting up the system 97 00:03:28.710 --> 00:03:30.630 by enabling all USB devices, 98 00:03:30.630 --> 00:03:32.490 but then restricting or disabling 99 00:03:32.490 --> 00:03:36.300 mass storage driver support if your BIOS supports that. 100 00:03:36.300 --> 00:03:38.280 We're going to go ahead and hit Exit to go back. 101 00:03:38.280 --> 00:03:40.140 And now, we're going to go over to the Advanced tab. 102 00:03:40.140 --> 00:03:41.730 Under the Advanced tab, you're going to find 103 00:03:41.730 --> 00:03:42.900 lots of different options, 104 00:03:42.900 --> 00:03:44.910 but the one I want to focus on here 105 00:03:44.910 --> 00:03:47.640 is going to be our ACPI Settings. 106 00:03:47.640 --> 00:03:49.500 Now, this is our power settings 107 00:03:49.500 --> 00:03:50.910 and this is where you're going to enable things 108 00:03:50.910 --> 00:03:52.980 like hibernation or sleep status 109 00:03:52.980 --> 00:03:55.470 from the BIOS to your operating system. 110 00:03:55.470 --> 00:03:57.870 For example, if you allow hibernation, 111 00:03:57.870 --> 00:04:00.030 this will allow the computer not just to sleep, 112 00:04:00.030 --> 00:04:03.030 but to actually create a save state of the computer. 113 00:04:03.030 --> 00:04:04.590 And that way, if you're using a laptop 114 00:04:04.590 --> 00:04:06.900 and you close the lid, it will save your state 115 00:04:06.900 --> 00:04:09.150 and when you open the lid and go back to the computer 116 00:04:09.150 --> 00:04:11.340 it'll be exactly where you left it. 117 00:04:11.340 --> 00:04:13.710 Hibernation is what allows that to happen. 118 00:04:13.710 --> 00:04:15.090 Now, if you don't want that setting, 119 00:04:15.090 --> 00:04:18.060 you could go in here and you could simply disable it. 120 00:04:18.060 --> 00:04:21.870 Now, in addition to that, we also have ACPI Sleep State. 121 00:04:21.870 --> 00:04:24.630 Now, when you look at the ACPI Sleep State, 122 00:04:24.630 --> 00:04:26.310 this configures what the button 123 00:04:26.310 --> 00:04:29.280 on the front of your computer is going to do when you push it. 124 00:04:29.280 --> 00:04:32.490 Now, if you push it and it has the S3 (Suspend to RAM) 125 00:04:32.490 --> 00:04:35.130 that means it's going to save your state into RAM 126 00:04:35.130 --> 00:04:36.990 and keep power to the machine. 127 00:04:36.990 --> 00:04:40.200 But if you want to Suspend Disabled, that will prevent you 128 00:04:40.200 --> 00:04:42.900 from being able to suspend that system. 129 00:04:42.900 --> 00:04:45.180 This is another thing you can enable or disable 130 00:04:45.180 --> 00:04:48.030 depending on your particular system preferences. 131 00:04:48.030 --> 00:04:50.520 If we go back, we're going to look at a couple more under here 132 00:04:50.520 --> 00:04:52.890 including our CPU Configuration. 133 00:04:52.890 --> 00:04:55.950 Now, our CPU Configuration on this particular motherboard 134 00:04:55.950 --> 00:04:58.170 does have multiple sockets. 135 00:04:58.170 --> 00:04:59.940 So, this motherboard will support me 136 00:04:59.940 --> 00:05:02.490 putting in one or two processors. 137 00:05:02.490 --> 00:05:03.720 And here you can see those labeled 138 00:05:03.720 --> 00:05:06.210 as Socket 0 and Socket 1. 139 00:05:06.210 --> 00:05:08.010 I can then go in and I can configure 140 00:05:08.010 --> 00:05:10.020 on a Per-Socket Configuration. 141 00:05:10.020 --> 00:05:12.000 What I want to do for each of those sockets 142 00:05:12.000 --> 00:05:15.420 such as enabling or disabling the cores for those. 143 00:05:15.420 --> 00:05:17.580 Then, if we go a little further down, 144 00:05:17.580 --> 00:05:20.490 you'll see the next option we have is hyper Threading. 145 00:05:20.490 --> 00:05:21.810 Hyper Threading allows us to get 146 00:05:21.810 --> 00:05:24.150 better performance out of our processor by allowing 147 00:05:24.150 --> 00:05:26.970 software to use multiple logical processor threads 148 00:05:26.970 --> 00:05:29.250 inside of a single physical processor. 149 00:05:29.250 --> 00:05:30.750 Right now, this is set to enable, 150 00:05:30.750 --> 00:05:33.330 but if you had a particular software or use case 151 00:05:33.330 --> 00:05:34.560 that didn't support it, 152 00:05:34.560 --> 00:05:37.800 you could go in and you could disable that if needed. 153 00:05:37.800 --> 00:05:38.940 Next, we're going to go back 154 00:05:38.940 --> 00:05:41.400 and we're going to look at the Memory Configuration. 155 00:05:41.400 --> 00:05:42.840 Now under Memory Configuration, 156 00:05:42.840 --> 00:05:45.540 you're going to see a couple of unique things on this BIOS 157 00:05:45.540 --> 00:05:48.540 that you probably won't see on your own system at home, 158 00:05:48.540 --> 00:05:52.680 including support for ECC or error correcting code. 159 00:05:52.680 --> 00:05:55.350 You could see on this particular BIOS we have it configured 160 00:05:55.350 --> 00:05:59.280 and this motherboard supports auto sensing of ECC. 161 00:05:59.280 --> 00:06:01.860 Now, in addition to that, you could disable ECC 162 00:06:01.860 --> 00:06:04.470 or you can enable ECC, depending on your needs, 163 00:06:04.470 --> 00:06:06.600 but for ours we're going to leave it in Auto. 164 00:06:06.600 --> 00:06:09.510 And this means I can put ECC memory into this mother board 165 00:06:09.510 --> 00:06:12.510 or regular non-parity memory into this board 166 00:06:12.510 --> 00:06:15.540 and it will be able to detect and support either one. 167 00:06:15.540 --> 00:06:17.550 In addition to that, we also can support 168 00:06:17.550 --> 00:06:19.860 two different types of memory on this board, 169 00:06:19.860 --> 00:06:21.780 UDIMM and RDIMM. 170 00:06:21.780 --> 00:06:24.600 Now, UDIMM is that unbuffered, non-parity, 171 00:06:24.600 --> 00:06:26.070 normal type of memory, 172 00:06:26.070 --> 00:06:28.140 where RDIMM is registered memory, 173 00:06:28.140 --> 00:06:30.690 which is going to be able to support ECC. 174 00:06:30.690 --> 00:06:32.130 Because we have this set up this way, 175 00:06:32.130 --> 00:06:33.810 I could use either one on this motherboard 176 00:06:33.810 --> 00:06:35.400 and it will support it just fine. 177 00:06:35.400 --> 00:06:37.710 But if I put in something like a UDIMM module 178 00:06:37.710 --> 00:06:38.790 and it didn't work, 179 00:06:38.790 --> 00:06:41.580 I could go in and select this as UDIMM only 180 00:06:41.580 --> 00:06:42.960 and that would overwrite that setting 181 00:06:42.960 --> 00:06:44.850 and tell it I am using UDIMM 182 00:06:44.850 --> 00:06:47.250 you must also recognize it as such. 183 00:06:47.250 --> 00:06:49.200 So that's another way to be able to use the BIOS 184 00:06:49.200 --> 00:06:51.090 when you're troubleshooting issues. 185 00:06:51.090 --> 00:06:53.580 Now, if I keep going down, you're going to see Memory Map. 186 00:06:53.580 --> 00:06:56.160 And this is where we can configure multi-channel memory 187 00:06:56.160 --> 00:06:57.900 on this particular motherboard. 188 00:06:57.900 --> 00:06:59.730 This will allow us to do Channel Interleaving. 189 00:06:59.730 --> 00:07:01.260 And right now it is set to Auto. 190 00:07:01.260 --> 00:07:03.840 So based on where I put the modules on my motherboard, 191 00:07:03.840 --> 00:07:05.940 the motherboard will automatically detect that 192 00:07:05.940 --> 00:07:07.800 and then set it up for single, dual, 193 00:07:07.800 --> 00:07:09.540 triple or quad channel memory, 194 00:07:09.540 --> 00:07:11.100 depending on the configuration. 195 00:07:11.100 --> 00:07:14.070 Or I can go in here and actually manually set that up 196 00:07:14.070 --> 00:07:15.720 if I was doing some sort of a troubleshooting 197 00:07:15.720 --> 00:07:17.340 and say that I want single channel, 198 00:07:17.340 --> 00:07:20.400 dual channel, triple channel or quad channel. 199 00:07:20.400 --> 00:07:22.530 For example, maybe there's some use case 200 00:07:22.530 --> 00:07:24.720 where I only want to operate in single channel. 201 00:07:24.720 --> 00:07:26.550 So I would say one way, and that way, 202 00:07:26.550 --> 00:07:29.340 even if I put in two modules or four modules, 203 00:07:29.340 --> 00:07:32.400 it will still operate only with a 64 bit address 204 00:07:32.400 --> 00:07:34.740 using single channel as my method. 205 00:07:34.740 --> 00:07:37.110 If I go back here, we're going to go back again. 206 00:07:37.110 --> 00:07:38.220 And now we're on the main screen, 207 00:07:38.220 --> 00:07:40.440 we're going to go over to Power. 208 00:07:40.440 --> 00:07:41.970 Underneath Power, you're going to notice 209 00:07:41.970 --> 00:07:43.530 that we have our fan settings 210 00:07:43.530 --> 00:07:45.630 and here right now I have it set to 1, 211 00:07:45.630 --> 00:07:47.610 which is the lower fan speed. 212 00:07:47.610 --> 00:07:49.860 This means it'll be as quiet as possible, 213 00:07:49.860 --> 00:07:52.980 but this does risk higher temperatures in my system. 214 00:07:52.980 --> 00:07:55.740 Now conversely, if I was overclocking my processor 215 00:07:55.740 --> 00:07:58.320 I might want to move down to the higher fan setting, 216 00:07:58.320 --> 00:07:59.970 which would be called a cool mode, 217 00:07:59.970 --> 00:08:01.620 which is going to have a higher fan speed 218 00:08:01.620 --> 00:08:03.510 and lower temperatures in the system. 219 00:08:03.510 --> 00:08:04.950 If I wanted a balance mode, 220 00:08:04.950 --> 00:08:06.360 that would be something more like 4, 221 00:08:06.360 --> 00:08:07.620 which is right in the middle. 222 00:08:07.620 --> 00:08:08.820 It's going to be a good balance 223 00:08:08.820 --> 00:08:11.670 between temperature and fan speed and noise. 224 00:08:11.670 --> 00:08:14.610 And by doing that, I'm getting the best of all worlds. 225 00:08:14.610 --> 00:08:16.740 Next, we're going to go over to Security. 226 00:08:16.740 --> 00:08:18.330 And here we have a couple of different 227 00:08:18.330 --> 00:08:20.130 security options that we can set, 228 00:08:20.130 --> 00:08:21.840 including our Administrator Password 229 00:08:21.840 --> 00:08:23.700 and our Power-on Password. 230 00:08:23.700 --> 00:08:25.890 When you're dealing with the Administrator Password 231 00:08:25.890 --> 00:08:27.210 this is going to prevent anyone 232 00:08:27.210 --> 00:08:29.100 from accessing these BIOS settings 233 00:08:29.100 --> 00:08:30.720 and changing things on us. 234 00:08:30.720 --> 00:08:31.980 So we do want to make sure we have 235 00:08:31.980 --> 00:08:33.000 an administrator password 236 00:08:33.000 --> 00:08:34.980 to lock other people out of the BIOS 237 00:08:34.980 --> 00:08:36.750 so they can't make configuration changes 238 00:08:36.750 --> 00:08:38.340 without our approval. 239 00:08:38.340 --> 00:08:40.470 On the other hand, the power-on password 240 00:08:40.470 --> 00:08:41.820 is going to be the password 241 00:08:41.820 --> 00:08:44.520 that controls access to the entire system. 242 00:08:44.520 --> 00:08:47.520 If I set up power-on password and you turn on the computer, 243 00:08:47.520 --> 00:08:49.050 you have to enter that password 244 00:08:49.050 --> 00:08:50.910 before it will even try booting up 245 00:08:50.910 --> 00:08:52.290 and accessing the hard drive 246 00:08:52.290 --> 00:08:54.750 and other components in the system. 247 00:08:54.750 --> 00:08:56.490 Now, in addition to that at the bottom, 248 00:08:56.490 --> 00:08:59.250 you will see we also have a Hard Disc Password 249 00:08:59.250 --> 00:09:00.810 and this would allow us to set a password 250 00:09:00.810 --> 00:09:02.370 that would enable that hard disc 251 00:09:02.370 --> 00:09:04.140 to be controlled by a password. 252 00:09:04.140 --> 00:09:06.360 If you have multiple hard discs in your system, 253 00:09:06.360 --> 00:09:07.800 some BIOSes will also allow you 254 00:09:07.800 --> 00:09:09.420 to set an individual password 255 00:09:09.420 --> 00:09:11.370 for each hard drive on the system. 256 00:09:11.370 --> 00:09:13.590 And that way, when somebody tries to boot up the computer 257 00:09:13.590 --> 00:09:15.270 maybe they have access to one hard drive, 258 00:09:15.270 --> 00:09:16.290 but not the other. 259 00:09:16.290 --> 00:09:19.440 And you'll be able to do that using those passwords. 260 00:09:19.440 --> 00:09:20.790 If we scroll down here, you'll see 261 00:09:20.790 --> 00:09:23.790 a couple of other options, including Secure Boot. 262 00:09:23.790 --> 00:09:24.990 Now, Secure Boot will be able 263 00:09:24.990 --> 00:09:28.410 to be Enabled or Disabled based on your system. 264 00:09:28.410 --> 00:09:31.080 On this system, we currently have it set to BIOS mode 265 00:09:31.080 --> 00:09:33.990 and Secure Boot requires you use UEFI. 266 00:09:33.990 --> 00:09:36.540 So therefore we're not able to set this right now 267 00:09:36.540 --> 00:09:39.240 and Secure Boot is Disabled. 268 00:09:39.240 --> 00:09:41.040 All right, let's hit escape and we'll go back. 269 00:09:41.040 --> 00:09:42.180 And then we're going to hit right arrow 270 00:09:42.180 --> 00:09:44.220 to go over to the Startup tab. 271 00:09:44.220 --> 00:09:45.840 Now, in the Startup tab, you're going to be able 272 00:09:45.840 --> 00:09:47.310 to control the Boot Mode. 273 00:09:47.310 --> 00:09:50.310 And you can see here that our Boot Mode is Legacy Only. 274 00:09:50.310 --> 00:09:53.340 We are not supporting a UEFI-type environment. 275 00:09:53.340 --> 00:09:55.500 As we go through our primary boot sequence, 276 00:09:55.500 --> 00:09:57.780 this would allow us to hit enter and go into it. 277 00:09:57.780 --> 00:09:58.680 And then we would be able 278 00:09:58.680 --> 00:10:01.200 to move up or down these different things 279 00:10:01.200 --> 00:10:05.010 in the order that we want for our particular boot sequence. 280 00:10:05.010 --> 00:10:06.810 We can see the list of all of the devices 281 00:10:06.810 --> 00:10:09.120 that you could use as a boot device 282 00:10:09.120 --> 00:10:10.620 in this particular system, 283 00:10:10.620 --> 00:10:15.090 including a USB floppy disc drive, a USB key or flash drive, 284 00:10:15.090 --> 00:10:17.490 any of these devices, 1, 2, 3, 4 or 5, 285 00:10:17.490 --> 00:10:19.200 none of which are currently connected. 286 00:10:19.200 --> 00:10:21.990 Your PCIe cards, P1 and P2, 287 00:10:21.990 --> 00:10:24.570 your SATA devices, Sata 1 through 6 288 00:10:24.570 --> 00:10:26.280 and then your other SATA devices, 289 00:10:26.280 --> 00:10:29.640 your eSATA or external SATA, your network connectors 290 00:10:29.640 --> 00:10:32.340 and USB hard drives or card readers 291 00:10:32.340 --> 00:10:34.920 as well as CD ROMs and other devices. 292 00:10:34.920 --> 00:10:37.140 To be able to reconfigure this boot priority, 293 00:10:37.140 --> 00:10:38.610 you would select each option 294 00:10:38.610 --> 00:10:40.470 and then you would hit the plus or minus key 295 00:10:40.470 --> 00:10:43.020 to move them up or down in the boot order. 296 00:10:43.020 --> 00:10:45.060 And that would allow you to set which ones you want 297 00:10:45.060 --> 00:10:47.040 to be able to boot from and which ones you can't. 298 00:10:47.040 --> 00:10:49.200 And you can hit the X key to exclude devices 299 00:10:49.200 --> 00:10:51.210 that you don't want to allow to be booted from, 300 00:10:51.210 --> 00:10:55.110 such as a USB key or USB external hard disc. 301 00:10:55.110 --> 00:10:56.520 The final thing you need to ensure 302 00:10:56.520 --> 00:10:58.980 is that when you're done changing all of your settings 303 00:10:58.980 --> 00:11:00.120 that you save them. 304 00:11:00.120 --> 00:11:02.220 If you don't save your settings and you leave the BIOS 305 00:11:02.220 --> 00:11:04.920 everything we just configured is going to be lost. 306 00:11:04.920 --> 00:11:07.860 So to save it, we would hit the F10 key 307 00:11:07.860 --> 00:11:11.430 and that would save it, exit and reboot the computer for us. 308 00:11:11.430 --> 00:11:13.110 If we made a mistake and we want to go back 309 00:11:13.110 --> 00:11:14.670 to the defaults at any time, 310 00:11:14.670 --> 00:11:16.500 we can do that by hitting F9. 311 00:11:16.500 --> 00:11:18.660 But if we do that, all of our changes 312 00:11:18.660 --> 00:11:20.910 will get overwritten with the default values 313 00:11:20.910 --> 00:11:23.820 that were created by our motherboard's manufacturer. 314 00:11:23.820 --> 00:11:25.860 All right, this was a quick tour of the BIOS 315 00:11:25.860 --> 00:11:28.140 just to give you a basic understanding 316 00:11:28.140 --> 00:11:30.300 of how to operate it using your arrow keys 317 00:11:30.300 --> 00:11:32.220 and selecting different settings. 318 00:11:32.220 --> 00:11:34.020 As I said before, you're going to be using 319 00:11:34.020 --> 00:11:36.030 the BIOS less and less these days, 320 00:11:36.030 --> 00:11:38.100 because most of us have moved on to UEFI 321 00:11:38.100 --> 00:11:40.150 for most of our motherboards and systems.