The partitions on each SCSI disk are represented by appending a decimal number to the disk name: sda1 and sda2 represent the first and second partitions of the first SCSI disk drive in your system. … The first disk (at address 2) is then named sda , and the second sdb .
What is Dev sda1?
dev/sda – The first SCSI disk SCSI ID address-wise. dev/sdb – The second SCSI disk address-wise and so on. dev/scd0 or /dev/sr0 – The first SCSI CD-ROM. dev/hda – The primary disk on IDE primary controller.
What are partitions in Linux?
Disk Partitioning in Linux
In most cases, large storage devices are divided into separate sections called partitions. Partitioning also allows you to divide your hard drive into isolated sections, where each section behaves as its own hard drive.
What is sda2 extended?
/dev/sda2 is an extended partition, which means it does not hold any data itself but just serves as a container for logical volumes, like /dev/sda5 . Both the container and its contained volumes are around 10 GB in size.
What is sda5?
An extended partition can contain as much partitions as you want, to be able to have more than 4 partitions. sda2 is your extended partition and it contains only one partition for the moment, sda5, which could just as well have been a primary partition since you do not have more than 4 partitions.
Why do I have sda1 and sda2?
The partitions on each SCSI disk are represented by appending a decimal number to the disk name: sda1 and sda2 represent the first and second partitions of the first SCSI disk drive in your system. … If the sda drive has 3 partitions on it, these will be named sda1 , sda2 , and sda3 .
What is Lsblk in Linux?
lsblk lists information about all available or the specified block devices. The lsblk command reads the sysfs filesystem and udev db to gather information. … The command prints all block devices (except RAM disks) in a tree-like format by default. Use lsblk –help to get a list of all available columns.
What are the two main partitions for Linux?
There are two kinds of major partitions on a Linux system:
- data partition: normal Linux system data, including the root partition containing all the data to start up and run the system; and.
- swap partition: expansion of the computer’s physical memory, extra memory on hard disk.
How do Linux partitions work?
These are partitions like the boot partition in that they hold directories and files or normal Linux system data. These are the files which start and run the system. Swap partitions. These are partitions that expand the PC’s physical memory by using the partition as a cache.
How do I extend my sda2?
I think the easiest way for you is to :
- Resize the extended partition /dev/sda2 so that it takes all the space left after it ( end of partition at the end of the disk).
- Resize the partition /dev/sda5 inside /dev/sda2 so that it ends at the end of /dev/sda2.
How can I extend an existing file system partition without destroying data?
3 Answers
- Make sure you have backups!
- Resize the extended partition to fill the new upper sector limit. Use fdisk for this. Be careful! …
- Enrol a new LVM partition in the root volume group. Create a new Linux LVM partition in the extended space, allow it to consume remaining disk space.
How do I use Vgextend in Linux?
How to Extend Volume Group and Reduce Logical Volume
- To Create new partition Press n.
- Choose primary partition use p.
- Choose which number of partition to be selected to create the primary partition.
- Press 1 if any other disk available.
- Change the type using t.
- Type 8e to change the partition type to Linux LVM.