Created attachment 1269363 [details]
this png file will tell that what happpened when the system is going to boot showing this error.

Description of problem:
After installing fedora 26 with by LVM without swap partition,the system is not booting. 

Version-Release number of selected component (if applicable):


How reproducible:easy

Steps to Reproduce:
     1.Boot the installer using any available means.
    2.Proceed to the installer's main screen, making sensible choices, and enter the Installation Destination screen.
    3.Ensure only the single target device you prepared is selected as the installation target disk.
    4.Ensure the option to configure partitioning yourself is selected, and complete this screen.
    5.On the MANUAL PARTITIONING screen, delete all existing partitions (if any).
    6.Click the Click here to create them automatically link
    7.Delete the swap partition that is automatically created
    8.Complete the installation process, making sensible selections for all other installer options.
    9.Boot the installed system. 
Actual results:
not booting

Expected results:
The install process should complete successfully and the installed system.should boot as expected.
No swap partition should be in use (you can check /proc/swaps) 

Additional info: