USB Hard Disk Drive or USB Flash Drive (Pen drive) is a popular external device that can be used to backup data or transfer data from one device to other device. In GUI (Graphical User Interface) Operating System such as Window or GNOME Desktop in Linux can automatically mount USB device and can show data in it if the File System of that device is supported. But all users do not like or always do not have GUI mode of Operating System specially the CentOS or Red Hat Linux user. In this case, USB device must be mounted manually and then access data from it. On the other hand, by default Linux (CentOS or Red Hat) does not support NTFS File System. But most of the USB devices are usually formatted with NTFS which is a Windows supported file system. To read or write data from NTFS formatted disk in CentOS or Red Hat Linux, a third party application named NTFS-3G have to be used. How to create or delete disk partition with fidisk utility was discussed in my previous article. In this article, I will discuss how to format USB devices and how to mount USB devices in CentOS or Red Hat Linux to read or write data from USB devices. I will also discuss how to install NTFS-3G to read or write data from NTFS USB device from CentOS or Red Hat Linux.
A USB drive with minimum 4GB of storage. The computer where you want to run Google OS must have a USB port. A Zip Extractor as per your OS (p7zip for Linux, Keka for Mac and 7-zip for Windows, all of them being free Apps). Etcher, as a free program for burning images, used for Windows, macOS and Linux. Installing Google Chromium OS in USB Drive. Select the OpenSuse.iso file you just downloaded using the 'Select Image' button. Plug a USB drive into you computer, if it's the only drive connected to your computer, it will be automatically selected. If not, select it. Warning: All data on the drive will be destroyed.
How to Mount USB Hard Disk or USB Flash Drive in CentOS 7
If you insert a USB Hard Disk or USB Flash Drive in CentOS 7 or Red Hat 7 Linux, you will find a new SD (SCSI Disk) drive with available drive letter (such as sdb or sdc) is attached in /dev directory. You will also find that a partition is automatically created such as sdb1 or sdc1. After inserting USB device, issue the flowing command to find your newly created partition.
[root@localhost ~]# fdisk -lDisk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x00096c2a
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 1026047 512000 83 Linux
/dev/sda2 1026048 5220351 2097152 82 Linux swap / Solaris
/dev/sda3 5220352 41943039 18361344 83 Linux
Disk /dev/sdb: 1073 MB, 1073741824 bytes, 2097152 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x100d3780
Device Boot Start End Blocks Id System
/dev/sdb1 2048 1026047 512000 83 Linux
Disk /dev/sdc: 15.9 GB, 15938355200 bytes, 31129600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0xfdc01076
Device Boot Start End Blocks Id System
/dev/sdc1 * 63 31129599 15564768+ c W95 FAT32 (LBA)
From the above output, you can see a new device /dev/sdc is attached and its size is 15.9 GB. You can also see a new partition /dev/sdc1 has been created automatically and the partition is with FAT32 which is supported both Window and Linux Operating System. So, we can easily mount this partition to a mount point such as /usb directory in our CentOS 7 or Red Hat 7 Linux with the following commands.
[root@localhost ~]# mount /dev/sdc1 /usb
[root@localhost ~]# df -HT
Filesystem Type Size Used Avail Use% Mounted on
/dev/sda3 xfs 19G 5.1G 14G 28% /
devtmpfs devtmpfs 506M 0 506M 0% /dev
tmpfs tmpfs 514M 127k 514M 1% /dev/shm
tmpfs tmpfs 514M 7.5M 507M 2% /run
tmpfs tmpfs 514M 0 514M 0% /sys/fs/cgroup
/dev/sda1 xfs 521M 122M 400M 24% /boot
/dev/sdb1 xfs 521M 27M 495M 6% /data
Centos On Usb
/dev/sdc1 vfat 16G 8.2k 16G 1% /usb
From the above output, we can see that our USB device (/dev/sdc1) has been mounted to /usb directory. Now you can keep data or copy data from this USB device by browsing /usb directory with cd command.
[root@localhost ~]# cd /usb[root@localhost usb]# ls
data file1
But FAT32 (vfat) has a limitation. It cannot transfer more than 2 GB file size at a time in Linux and in Windows it can transfer 4 GB file size at a time. So, if you need to transfer more than 2GB file size at a time, you have to first format it to other Linux supported file system such as ext4 or xfs that can overcome this limitation.
So, if you wish to transfer more than 2 GB file size at a time, format the USB device with Linux supported file system with following command and then mount the partition to the mount point ( /usb directory).
meta-data=/dev/sdc1 isize=256 agcount=4, agsize=972798 blks
= sectsz=512 attr=2, projid32bit=1
= crc=0
data = bsize=4096 blocks=3891192, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[root@localhost ~]# mount /dev/sdc1 /usb
[root@localhost ~]# df -HT
Filesystem Type Size Used Avail Use% Mounted on
/dev/sda3 xfs 19G 5.1G 14G 28% /
devtmpfs devtmpfs 506M 0 506M 0% /dev
tmpfs tmpfs 514M 127k 514M 1% /dev/shm
tmpfs tmpfs 514M 7.5M 507M 2% /run
tmpfs tmpfs 514M 0 514M 0% /sys/fs/cgroup
/dev/sda1 xfs 521M 122M 400M 24% /boot
/dev/sdb1 xfs 521M 27M 495M 6% /data
/dev/sdc1 xfs 16G 34M 16G 1% /usb
Now you can see the USB device is formatted with xfs file system. So, you are now eligible to transfer more than 2GB file at a time.
After using USB device, you generally remove the USB device from your system. But before removing you should unmount the USB device from the mount point (/usb directory) with the following command.
[root@localhost usb]# cd[root@localhost ~]# umount /usb
How to Mount NTFS USB Device in CentOS 7 Linux
The NTFS is a Windows Operating System supported File System. So, CentOS or Red Hat Linux cannot usually mount a NTFS formatted USB HDD or USB Flash Drive. If you insert a NTFS USB device and run fdisk command, you will find a new partition and the partition file system is NTFS.
[root@localhost ~]# fdisk -lDisk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x00096c2a
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 1026047 512000 83 Linux
/dev/sda2 1026048 5220351 2097152 82 Linux swap / Solaris
/dev/sda3 5220352 41943039 18361344 83 Linux
Disk /dev/sdb: 1073 MB, 1073741824 bytes, 2097152 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x100d3780
Device Boot Start End Blocks Id System
/dev/sdb1 2048 1026047 512000 83 Linux
Disk /dev/sdc: 16.2 GB, 16231956480 bytes, 31703040 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0xc3072e18
Device Boot Start End Blocks Id System
/dev/sdc1 * 48 31703039 15851496 7 HPFS/NTFS/exFAT
As it is a NTFS USB device, CentOS 7 or Red Hat Linux cannot usually mount it until you format it with Linux supported File System or use a third party tool. As we do not want to format it and want to use NTFS USB device, we will us third party open source tool named NTFS-3G that will help to mount NTFS formatted Disk in CentOS 7 or Red Hat 7 Linux.
The NTFS-3G is present in EPEL (Extra Packages for Enterprise Linux) repository. So, we have to enable EPEL repository before installing NTFS-3G. The following commands show how to enable EPEL Repository in CentOS 7 or Red Hat 7 Linux.
[root@localhost ~]# yum install wget –y[root@localhost ~]# ~] wget http://rpms.famillecollet.com/enterprise/remi-release-7.rpm
[root@localhost ~]# wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
[root@localhost ~]# rpm -Uvh remi-release-7.rpm epel-release-latest-7.noarch.rpm
EPEL Repository is now enabled and we are ready to install NTFS-3G. To install NTFS-3G, issue the following command from your command prompt.
NTFS-3G is now installed and ready to work. NTFS-3G works with FUSE module. FUSE module is by default included with CentOS 7 or Red Hat 7 Linux. However, if you find that FUSE module is not present in your kernel, issue the following command to install and load the FUSE driver module.
[root@localhost ~]# yum install fuse –y[root@localhost ~]# modprobe fuse
We are now ready to mount the above NTFS USB device in our CentOS 7 or Red Hat 7 Linux. First create the mount point for NTFS device with the following command.
Now mount the NTFS USB device to the mount point with the following command.
You can now find that the NTFS USB device is mounted to the mount point with the following command.
[root@localhost ~]# df -HTFilesystem Type Size Used Avail Use% Mounted on
/dev/sda3 xfs 19G 5.2G 14G 28% /
devtmpfs devtmpfs 506M 0 506M 0% /dev
tmpfs tmpfs 514M 127k 514M 1% /dev/shm
tmpfs tmpfs 514M 7.5M 507M 2% /run
Centos Live Usb On Mac
tmpfs tmpfs 514M 0 514M 0% /sys/fs/cgroup
/dev/sda1 xfs 521M 122M 400M 24% /boot
/dev/sdb1 xfs 521M 27M 495M 6% /data
/dev/sdc1 fuseblk 17G 5.0G 12G 31% /backup
Now go to your NTFS USB device by browsing backup directory and you will find that your files are present there.
Live Usb For Centos On Mac Virtualbox
[root@localhost ~]# cd /backup[root@localhost backup]# ls
Activator Autorun.inf bootmgr BREB visit BSTI PLI sources System Volume Information AL.ico boot bootmgr.efi BREB Visit Report.docx efi setup.exe support Time extension letter.docx
You can now do any file operation here. If you want to make mount point permanent at the boot time, simply add the following line at the end of /etc/fstab file. The mount point will remain as permanent.
/dev/sdc1 /backup ntfs-3g defaults 0 0
[root@localhost ~]# vim /etc/fstabUUID=bee34176-dd55-479e-95c5-9545912d14b9 / xfs defaults 1 1
UUID=dede0f3e-6c9a-4185-afb4-f129fb873246 /boot xfs defaults 1 2
UUID=40464ff6-29e5-4492-9698-1b8229ca58f6 swap swap defaults 0 0
/dev/sdb1 /data xfs defaults 0 0
/dev/sdc1 /backup ntfs-3g defaults 0 0
[root@localhost ~]# mount –a
If you want to remove the NTFS USB device, just delete the above fstab (/etc/fstab) entry and unmount with the following command and then remove your device.
[root@localhost backup]# cd[root@localhost ~]# umount /backup
If you face any confusion to follow above steps properly, watch the below video about mounting USB device in CentOS 7 Linux and hope your confusion will be removed.
How to mount USB device (both Linux supported File System and NTFS) in CentOS 7 or Red Hat 7 Linux has been discussed in this article. I hope you are now able to mount your USB device in your CentOS 7 or Red Hat 7 Linux. However, if you face any confusion to follow above steps properly, feel free to discuss in comment or contact with me from Contact page. I will try my best to stay with you.
Here is the tutorial to create a bootable USB drive using CentOS 8 Linux ISO DVD file on Windows 10/8/7 operating system.
As we know, the latest version of CentOS based on REHL 8 i.e CentOS 8 Linux has been released with lots of new features and improvements. Although the changes are same what we have seen in the RHEL 8, it is because CentOS 8 Linux is a downstream OS of Redhat. The big change, we got this time is the entry of a new rolling-based Linux OS from CentOS developer community i.e CentOS Stream which will go parallel to LTS CentOS 8 Linux. If you haven’t downloaded any of them yet then you can find links for the same in this article. CentOS 8 packages will be distributed by BaseOS and AppStream repositories. Moreover, if you are on old CentOS 7 then stay tuned for the instructions to know how to upgrade CentOS 7 to CnetOS 8 Linux.
Note: You must need at least 8 GB Pen Drive to create a CentOS 8 bootable USB since the size of the OS itself is 6.6 GB.
Steps to make bootable USB of CentOS 8 Linux
The tutorial is performed using the centOS 8 LTS Linux ISO image, however, the steps will be the same for CentOS stream version.
1: Download CentOS 8 Linux ISO DVD image
You can easily get the ISO file of both CentOS 8 Linux and Stream from its official website, however, for your convenience, here are the links: Direct Download Linux 8 and Stream+ Torrent Download CentOS 8 and Stream.
2. Use the Rufus on Windows OS
Now download the Rufus USB creator portable application on your system. To get it here is the link. This application is open source and quite fast & safe. Just download the executable, run it that’s it.
3: Run Rufus and select the USB drive
Well, just like any other Windows application run the setup of Rufus too. On the screen, the first option will be the Device. At the front of which you will find a drop-down box, click on that and select the connected Pen or USB drive at least of 8GB. If you have a single USB storage device connected on your system, the Rufus will automatically set that.
4: Insert CentOS 8 Linux ISO DVD to Rufus
Centos Usb Drive
The second option is Boot Selection, where we have to select the ISO file of the OS for which we want to create bootable USB drive, here we are selecting our downloaded CentOS 8 x86_64 bit iso file. For that simply click on the SELECT button.
5: Finally start the flashing process
When you click on the START button it will ask you to download Idlinux.sys and Idlinux.bss, click on the Yes button to download them.
Centos Usb Wifi
Next, it will say it is recommended to use ISO file, click Yes and move forward.
Rufus will warn you that while creating a CentOS bootable USB drive all the content of it will get destroyed. Accept that too. However, if you have something important on the pen drive so make sure to back that.
It will take a few minutes, depending on the USB performance of your system.
Video Tutorial: