We have learned about user administration in previous lecture. And here in this lecture we're going to learn about file system management. The file system management allows us to understand file system hierarchy. And we have to manage virtual memory, add new drives and partitions, and mount NFS file systems and various other things. So let's start adding a new file system to the file system Cree is simple. We have to do certain things in a process, we have to first identify a device.

Partition the device, make a file system, label the file system, create an entry in EDC, Fs tab and mount new file system for decarbonizing a device when a system holds itself for code can restart an operating system, which is made from a list of devices, a CD ROM floppy hardest, as defined in the BIOS, the basic input output system, the first executable code found is used. Most often our system boots from the hardest attached to the system in Word, or SSD which is attached on a PC and from the court found at the first sector of the fourth cylinder, the master boot record, or MBR. of the drive. This executable code is called bootloader. The bootloader starts your system, the basic bootloader begins maybe with a grub. The grand unified bootloader the space for partition table information includes the partition ID or tag is starting cylinder for partition and number of cylinder for a partition.

This is the way our devices are recognized. You don't need to do my thing other than BIOS if you want good, suppose you have to do different operating system, Red Hat on your hardest internal audits of your PC and a Windows on a pendrive bootable on a pendrive which BIOS you can select a boot order if hardest is preference as one higher has a higher preference and external USB devices are have lower preference. Then by when you have connected a pendrive and hardest at the same time, the resident will boot which is located in hard disk. So this is the process of device recognition you can manage which device to be booting First, the bootloader to be loaded from that one device. Then there comes up disk partitioning, which allows you to extend partition points to additional partition descriptors. Total maximum number of partitions supported by the kernel is 63 for ID device drivers integrated development environment for software development 15 for CSI drivers.

Wide partition drives the containment performance quota recovery, they are in the extended extended partitions and logical partitions are used. If one of the primary partition is marked as extended, or type zero x five, with Windows 95 extended type zero x f, then the first sector of the partition describe what the entry will contain another block of partition descriptors. These descriptors define partition known as logical partitions. Use of logical partitions is a work around for limitation in the legacy MS DOS Based on partition tables a structure of a logical partition always the definition of more than four partitions for rife with a PC partition specification does not impose a limit to the number of logical partitions. On magnets, suppose we have partition for SAP amenti mt and root, we have configured when installed Red Hat in the second video of our essentials, the installation So similarly, you can partition your disk.

You can manage partitions with Command F disk and SF disk. The ga new parted, which is an advanced partition manipulation, to create, copy, resize etc. You can also use part group at reinitiate the kindness in memory version of the partition table. The partition table restores the partition actually part Question is nothing in reality that do not exist on physical level. It is a logical partition or virtual partition just for to accommodate users of isolated. For a better use the folder we have learned about the directory table and here it is a partition table.

You can also create your own file system or a new file system by using the command mkfs. If you want to create a file system with EFT to file system standards, you have to write mkfs dot txt two if you want to create a partition with for EFT three you have to write with the dot php three or four MS DOS you have to write MS DOS and so on. A specific file system utilities can be called directly using mkv to FF provide all And device. The file system labels are alternative ways to refer to a device. Labels are similar to alias but they are different familiars. They are device independent, easy to level especially device could be used and so, blk ID can be used to see labels and filesystem tags of all devices.

Then there comes another function that is called tune to Fs. It adjust file system parameters, the reserve blocks, default mount options, Fs, seek a frequency, you can view current settings with a dump. E two Fs It is used to modify the percentage of our is our blocks. The default these have lost the value lower than 5% can be to performance In addition to fragmentation, you can create a fragmentation as well. The command is used as a tune to Fs minus m provide a parameters and a location. The mounting points are can be configured with a tab Fs tab.

In EDC directory. The configuration of the file system hierarchy is installed with a mount point. It is used by Mount fsck and other programs. It contains the hierarchy between system reboots, it may use file system volume levels in device fields. The mt minus a command can be used to mount all file systems listed in EDC FST mounting file system with the mount command. A new file system could be mounted like if you place a pendrive with different file system on a system on your desktop or PC.

With a different file system, it needs to be mounted on the three of your system PCs, our file system, file system on a pendrive get mounted on your PC's file system at a particular location that you define. Using the mount command, you can mount a device for minus T or demand is not normally used and minus our options. Again, the default options for the mounting of file s are rW su ID, their FCC, ACL and sync. You can also unmount a file system from a system by using the unmount command and provide the mounting point under device name. You cannot unmount a file system that is in currently current use. You can choose to use the fuser to check and kill processes running on Different file systems, you can use the D mount option to change your mounted file systems options atomically using mount minus o remount, or auto.

You can mount a system a sample file system requirements met using options. You should disable executing access mounting a file system image mount a PC compatible file system, disable access time updates, and setup model aliases. This could be done with mounting options dendrograms A handling of swap files and partitions. The swap space is a supplement to a system ram it is very vital, you should create sub partitions with some useful considerable amount of space. It is used as supplement to system Ram, Ram your RAM is not enough to afford a particular computation disarm His face is used for that thing. The basic setup involves by creating a sub partition of file writing a special signature using mk S, you can add appropriate entries to EDC Fs tab and activate SAP is faced with SAP on minus a command.

You cannot mount NFS file systems and it is a use in modern a USB drive. Or you can make a remote NFS file system work as though it was a local file system. It can be used to specify persistent network mounts and the first shares are mounted at boot time. The exports can be mounted manually With the mount command MP dir make a directory and mounted on a location using the NFS argument provided by minus t argument. You can also use auto mounted where system administrators specifies mount points, controlled by outdoor mounted daemon process. Located in auto dot master the auto mount or monitors access to these directories and mount the file system on demand.

It can mount automatically. It is entirely a graphical utility to file systems automatically unmounted after a specified interval of inactivity. To enable a special map, you can use minus host or browse all NFS exports on the network. It supports wildcard directory names as well. Even after also use our direct maps direct map includes absolute paths Name does not obscure local directory structure within example, or direct map. Direct maps can be used to automatically mount a file system to any mount point in the file system or direct map contains absolute path as defined in auto dot master again, on the right most data entry is put under auto monitor control.

Just the directory structure above mount point is not obscured by auto Fs. Then there is a genome mount option that automatically mounts the mobile right devices. It is integrated with hardware abstraction layer, it replaces Fs tab Sim. D, no mount a simple thing. You don't need to write a mount command. This is an option for simple users.

Specifically for desktop version. You Users of redhead who are not concerned about the server environment, and they don't want to write mount commands every time they are not high end users. They simply want to place the new device placed upon right want the content to show ups and they can so that they can copy or move files from system and pendrive and vice versa. So these are a brief introduction, a brief learning about him by systems. We will be learning more in the coming videos. Till then keep learning and keep moving ahead.