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How to resize and extend centos 7 disk manually

 How to resize and extend centos 7 disk manually Resizing The Partition You need to modify the   Linux   partition table within the   virtual machine   to recognize that the disk size has changed. This can be done using the   fdisk   utility, which is a partition editor. For the   virtual machine   provided by Nagios Enterprises: sda1   is used for the   boot   partition sda2   is the device for all logical volumes, this is the partition you need to edit Start   fdisk   by executing the following command: fdisk /dev/sda   You should print the current partition table so you can keep track of your changes as you go: Command (m for help): p Take a screenshot or copy the screen contents into a text file in case you want to reference it later. To resize a partition, you actually "delete" it and then add a new one with the new size, making sure to place the beginning of the new partition at the same sector/cylinde...
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How To do A serial loopback test?? A loopback test allows you to send and receive data from the same serial port to verify that the port is operational. To perform this test, you need to temporarily connect the proper pins to allow signals to be sent and received on the same port. Table of Contents Loopback Test Connectors Performing a Loopback Test in Hyperterminal Performing a Loopback test in Measurement & Automation Explorer Performing a Loopback test in LabVIEW Loopback Test A loopback test can be used to troubleshoot serial communications. It can show problems in the serial port, the cable, or the software generating the messages without having to connect to third party hardware. By connecting the proper wires, a loopback test can verify the operation of serial communication. Loopback tests can be used for RS-232 , RS-422 , and RS-485 serial communication. For more information on RS-232, RS-422, and RS-485 see the Serial Communication Overview . Note that not all serial ...
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