Step-by-Step Guide: Install CentOS 7.4 on a Virtual Machine
This tutorial walks you through every stage of installing CentOS 7.4 in a virtual machine—from mounting the ISO and configuring manual partitions to setting the root password and completing the first boot—providing clear instructions and screenshots for each step.
The article provides a detailed, step‑by‑step tutorial for installing CentOS 7.4 on a virtual machine, covering ISO mounting, language selection, manual partitioning, root password setup, and final reboot.
1. Mount the ISO – Power on the VM, click the CD icon, and attach the CentOS 7.4 ISO file.
2. Start Installation – Press Enter in the VM console, select “Install CentOS Linux 7”, and press Enter again.
3. Loading Screen – Wait for the loading page to finish.
4. Choose Language – Keep the default English and click Continue .
5. Installation Destination – Proceed to the “Installation Destination” screen.
6. Manual Partitioning – Select “I will configure partitioning” (manual). The default 20 GiB disk is shown; it can be expanded later if needed.
7. Create Partitions – In the manual partitioning view, choose the standard partition scheme and click the + button.
8. Swap Partition – Set mount point /swap with size 2048 MB and click “Add mount point”.
After adding swap, the remaining free space is about 18 GiB.
9. Root Partition – Choose mount point /, assign the remaining 18 GiB, and click “Add mount point”.
10. Review Partitions – Verify that free space is nearly exhausted, then click “Done”.
11. Accept Changes – Choose “Accept changes”.
12. Begin Installation – Click “Begin Installation” to start the process.
13. Software Selection (Optional) – You may choose “Minimal Install” under Software Selection for a lightweight system.
14. Installation Progress – Wait while the installer copies files.
15. Set Root Password – Click the password field, enter a root password (minimum 8 characters recommended).
16. Confirm Password – Re‑enter the password to confirm.
If the password is too simple, the installer will prompt you to choose a stronger one.
17. Finish Configuration – Click “Finish configuration”.
18. Wait for System Setup – The installer completes configuration; be patient.
19. Reboot – Click “Reboot” to restart the VM.
20. Login – After reboot, log in with username root and the password you set.
21. Verify Installation – Open a terminal and run ls to list files, confirming the system is operational.
At this point, CentOS 7.4 is fully installed and ready for use.
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