{"id":4215,"date":"2024-03-13T08:07:59","date_gmt":"2024-03-13T08:07:59","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-can-i-add-a-hard-drive-and-expand-the-root-partition-on-centos\/"},"modified":"2025-07-31T04:50:39","modified_gmt":"2025-07-31T04:50:39","slug":"how-can-i-add-a-hard-drive-and-expand-the-root-partition-on-centos","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-can-i-add-a-hard-drive-and-expand-the-root-partition-on-centos\/","title":{"rendered":"Expand CentOS Root Partition: Add Hard Drive Guide"},"content":{"rendered":"

To add a hard drive and expand it to the root partition in a CentOS system, follow these steps:<\/p>\n

    \n
  1. Firstly, insert the new hard drive into the server, and use the following command to view the disk device information:<\/li>\n<\/ol>\n
    lsblk\r\n<\/code><\/pre>\n
    Find the name of the newly added hard drive device, such as \/dev\/sdb.<\/p>\n
      \n
    1. Partition and format the new hard drive using the following command.<\/li>\n<\/ol>\n
      fdisk \/dev\/sdb\r\n<\/code><\/pre>\n
      Type in ‘n’ to create a new partition, choose the default option to create the new partition. Then type in ‘w’ to save the changes and exit.<\/p>\n
        \n
      1. Format the new partition.<\/li>\n<\/ol>\n
        mkfs.ext4 \/dev\/sdb1\r\n<\/code><\/pre>\n
          \n
        1. Mount a new partition to a temporary directory.<\/li>\n<\/ol>\n
          mkdir \/mnt\/newdisk\r\nmount \/dev\/sdb1 \/mnt\/newdisk\r\n<\/code><\/pre>\n
            \n
          1. Copy the root partition to a new partition.<\/li>\n<\/ol>\n
            rsync -avx \/ \/mnt\/newdisk\r\n<\/code><\/pre>\n
              \n
            1. The file located at \/etc\/fstab<\/li>\n<\/ol>\n
              \/dev\/sdb1 \/           ext4    defaults        1 1\r\n<\/code><\/pre>\n
                \n
              1. Remount the root partition:<\/li>\n<\/ol>\n
                umount \/\r\nmount -a\r\n<\/code><\/pre>\n
                  \n
                1. Use the following command to check if the root partition has been resized:<\/li>\n<\/ol>\n
                  df -h\r\n<\/code><\/pre>\n
                  Please make sure to back up important data before proceeding with the above operations to prevent any unexpected situations.<\/p>\n","protected":false},"excerpt":{"rendered":"
                  To add a hard drive and expand it to the root partition in a CentOS system, follow these steps: Firstly, insert the new hard drive into the server, and use the following command to view the disk device information: lsblk Find the name of the newly added hard drive device, such as \/dev\/sdb. Partition and […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[3566,893,3564,1150,3565],"class_list":["post-4215","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-add-hard-drive","tag-centos","tag-disk-expansion","tag-linux-storage","tag-root-partition"],"yoast_head":"\nExpand CentOS Root Partition: Add Hard Drive Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Step-by-step guide to add a hard drive and expand root partition in CentOS. 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