Problems installing CentOS 7 with flash USB
This article discusses the difficulties that the user may encounter when installing CentOS 7 from a USB flash drive, and also shows some options for solving them.
More recently, on April 1, 2015, a new version of the CentOS operating system was released, namely, 7 (1503).
There are several installation options for this system: network installation, as well as * .iso images in the versions from “minimum set” and “LiveCD” to “all inclusive”. However, when you try to install, you may encounter some difficulties.
The complexity of the first. Using UltraISO
For those who dealt with previous versions, for example, 6.6, the question of installing this system could not arise, because the process is quite simple: the image is recorded using the UltraISO program on the USB flash drive and is successfully installed.
With version 7, everything is not so simple: it turned out that when trying to open this image, UltraISO displays the following:
Figure 1. The total size of 6150KB, while the image in the version of "Everythyng" takes about 7GB
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Naturally, the attempt to write such an image on flash ended in failure: when you try to boot from USB Flash, nothing happens.
The complexity of the second. Using Fedora LiveUSB Creator
The RHEL 7 installation guide (Red Hat Enterprise Linux) suggests using the Fedora LiveUSB Creator utility, its interface is shown in Figure 2:
Figure 2. LiveUSB Creator
The process of unpacking the image itself occurs normally, it does not cause problems. Downloading from such a flash is possible, however, when you start the installation in the Source section, a message will appear: “This source is not suitable” and you are offered to try alternative installation paths: specify the image directly or try installing the system over the network.
The complexity of the third. Using other loaders
In attempts to deliver the system there were attempts to use the following software:
- ISO2USB for CentOS / RedHat;
- UNetbootin;
- Universal USB Installer;
- LinuxLiveUSB Creator.
It turned out that none of the above programs does not give a normal result. Or the loading process “freezes” on the image of four penguins, or does not occur at all. The answer to why this happens is found on the CentOS project's official wiki page, in the section “How to Set Up a USB Key to Install CentOS”: “CentOS 7 installer has a special partitioning "When booting from the USB key.
Solution to the problem. Using ImageWriter
By trial and error, it turned out that there is still a program that can create a bootable flash from the * .iso image of CentOS7. This program is Win32DiscImager or ImageWriter, free to download. Its interface is shown in Figure 3.
Figure 3. ImageWriter
The interface, as can be seen from the figure, is quite simple and intuitive. When you select a file, you should specify the mask *. * In the file type, after which the image will be recorded on flash USB.
Using this method allows you to successfully download the CentOS installer from flash USB and perform further system installation.
Thanks for attention. Good luck in the development of new systems.
More recently, on April 1, 2015, a new version of the CentOS operating system was released, namely, 7 (1503).
There are several installation options for this system: network installation, as well as * .iso images in the versions from “minimum set” and “LiveCD” to “all inclusive”. However, when you try to install, you may encounter some difficulties.
The complexity of the first. Using UltraISO
For those who dealt with previous versions, for example, 6.6, the question of installing this system could not arise, because the process is quite simple: the image is recorded using the UltraISO program on the USB flash drive and is successfully installed.
With version 7, everything is not so simple: it turned out that when trying to open this image, UltraISO displays the following:
Figure 1. The total size of 6150KB, while the image in the version of "Everythyng" takes about 7GB
')
Naturally, the attempt to write such an image on flash ended in failure: when you try to boot from USB Flash, nothing happens.
The complexity of the second. Using Fedora LiveUSB Creator
The RHEL 7 installation guide (Red Hat Enterprise Linux) suggests using the Fedora LiveUSB Creator utility, its interface is shown in Figure 2:
Figure 2. LiveUSB Creator
The process of unpacking the image itself occurs normally, it does not cause problems. Downloading from such a flash is possible, however, when you start the installation in the Source section, a message will appear: “This source is not suitable” and you are offered to try alternative installation paths: specify the image directly or try installing the system over the network.
The complexity of the third. Using other loaders
In attempts to deliver the system there were attempts to use the following software:
- ISO2USB for CentOS / RedHat;
- UNetbootin;
- Universal USB Installer;
- LinuxLiveUSB Creator.
It turned out that none of the above programs does not give a normal result. Or the loading process “freezes” on the image of four penguins, or does not occur at all. The answer to why this happens is found on the CentOS project's official wiki page, in the section “How to Set Up a USB Key to Install CentOS”: “CentOS 7 installer has a special partitioning "When booting from the USB key.
Solution to the problem. Using ImageWriter
By trial and error, it turned out that there is still a program that can create a bootable flash from the * .iso image of CentOS7. This program is Win32DiscImager or ImageWriter, free to download. Its interface is shown in Figure 3.
Figure 3. ImageWriter
The interface, as can be seen from the figure, is quite simple and intuitive. When you select a file, you should specify the mask *. * In the file type, after which the image will be recorded on flash USB.
Using this method allows you to successfully download the CentOS installer from flash USB and perform further system installation.
Thanks for attention. Good luck in the development of new systems.
Source: https://habr.com/ru/post/258037/
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