How to Fix CentOS 7 / RHEL 7 / SL 7 / OL 7 Installation Failed at Boot whre /dev/root Does Not Exist. This type error occurred when you try to install the Enterprise Linux 7 by using the bootable Flash Drive / Pen Drive / USB Drive. This type of error due to incompatible boot techniques that is not supported by the enterprise Linux 7. This tutorial provides guides that help you to rectify the error by using this fix. But on important thing you need to follow the steps carefully.
Why this occurs?
The Given Error occurred when you try to Install EL 7 from USB Drive and error looks likes as:
[ OK ] Reached target Basic System. dracut-initqueue: Warning: Could not boot. dracut-initqueue: Warning: /dev/root does not exist Starting Dracut Emergency Shell... Warning: /dev/root does not exist Generating "/run/iniramfs/rdsosreport.txt" Entering emergency mode. Exit the shell to continue.
It is Due incorrect commands and Software for making bootable USB Stick
- If you use the incorrect dd commands
- If you use the incompatible Software’s like UnetBootin (For Linux , Windows and MAC) and Universal USB Installer (For Windows only)
How to fix this Error?
Method-1 (dd command method)
You must use the dd command from CentOS newer than 6.5 and CentOS 7
# dd if=ISO-IMAGE-NAME.iso of=/dev/sdb
Note: For more info about dd command and how to make the PC bootable using dd command has given in this tutorial.
Method-2 (Using compatible software’s)
You must use these Windows Software’s in Windows 7 / 8.1 / 10
Note: Don’t use the incompatible Software’s like UnetBootin (For Linux , Windows and MAC) and Universal USB Installer (For Windows only) for making the USB bootable.
The Compatible Software’s are:
- Win32 Disk Imager
- dd for Windows
- Fedora LiveUSB Creator
Thats all now now you have fixed this error now you have to go through the installation of EL7 for successful installation of respective EL7 with ease. For more info you need to use the comment section below for more information and support.