1 00:00:00,000 --> 00:00:12,920 In this video, I'll show you how to create MBR primary partitions using the fdisk utility. 2 00:00:12,920 --> 00:00:17,080 In case you are wondering, do we still need to know about that? Yes, because you want 3 00:00:17,080 --> 00:00:23,719 to pass Linux Plus and also because in some systems you'll still encounter MBR partitions. 4 00:00:23,719 --> 00:00:27,920 You know, some Linux systems stay around for a long time, and if you want to be certified 5 00:00:27,920 --> 00:00:33,919 to manage them, you better have some basic skills regarding MBR. For this demo, I've 6 00:00:33,919 --> 00:00:40,480 used my virtualization layer to add some storage. If we use LSB-LK, we can find information 7 00:00:40,480 --> 00:00:45,200 about it. Hey, talking about changing device names, do you see that? I was just talking 8 00:00:45,200 --> 00:00:51,240 about it. And the device previously known as dev-nvme-0-n1 has now suddenly changed 9 00:00:51,240 --> 00:00:59,160 to dev-nvme-0-n3. But fortunately, FSTEP is using UUIDs, and these UUIDs are written 10 00:00:59,160 --> 00:01:05,320 on the device itself, so that will always correctly be detected. I'm going to use fdisk 11 00:01:05,320 --> 00:01:13,720 on dev-nvme-0-n1, and that is my first disk. Always make sure that you use your partitioning 12 00:01:13,720 --> 00:01:20,360 utility on a disk. You can't use it on a partition. Now, we can see that AFRIS is telling us that 13 00:01:20,360 --> 00:01:26,839 the device does not contain a partition table, and it created the new DOS or MBR disk label, 14 00:01:26,839 --> 00:01:33,000 and that's exactly what we want. You can also use M for help. You should see that as M for 15 00:01:33,000 --> 00:01:38,760 menu, because you can see all the useful options in this menu. And there's a couple of options 16 00:01:38,760 --> 00:01:45,720 that I like. To start with, the option P. Let me put it on the top of my screen. P is for print. 17 00:01:46,360 --> 00:01:52,599 So here we can find some generic disk information, including that this is a 20 GB disk, 18 00:01:52,599 --> 00:01:58,120 this is the amount of bytes, and we are using sectors with the size of 512 bytes. 19 00:01:58,120 --> 00:02:04,040 Now, let me use N to create a new partition. And there we have the choice between primary 20 00:02:04,040 --> 00:02:10,440 or extended. Remember, in MBR, you can only address four partitions. But as this is the first one, 21 00:02:10,440 --> 00:02:16,360 I'm going to start with a primary partition, partition number one. The first sector starts 22 00:02:16,360 --> 00:02:22,360 at 2048. In case you are wondering, why doesn't it start at the beginning? Well, there's a simple 23 00:02:22,360 --> 00:02:30,440 explanation. Every disk, the first megabyte is reserved for metadata storage, administrative 24 00:02:30,440 --> 00:02:37,240 information about what you are doing on your disk. So your first partition will always start at MB 25 00:02:37,240 --> 00:02:42,360 number one. Then it's asking for the size. In the last sector, well, I'm going for the plus 26 00:02:43,240 --> 00:02:52,199 size in K, M, G, T, or P. So I'm using plus one uppercase G. Don't forget, Linux is case sensitive. 27 00:02:52,199 --> 00:02:57,720 Lowercase G is really not going to work. And now we can see that the new partition one of type 28 00:02:57,720 --> 00:03:03,880 Linux and a size of one gigabyte has been set. It's a good idea there to verify that using P 29 00:03:03,880 --> 00:03:10,440 for print partition table. And here we can see that the device NVMe 0 and 1P1 has been added. 30 00:03:11,080 --> 00:03:19,080 If that is what you wanted, use W to write, and then use LSB OK to verify that the new partition 31 00:03:19,080 --> 00:03:26,199 is visible. And as you can see, it is visible. So mission accomplished. We still need to create 32 00:03:26,199 --> 00:03:32,440 a file system on top of it. I'm showing you how to work with file systems in one of the upcoming 33 00:03:32,440 --> 00:03:33,559 videos.