Number of zeros seen on screen on bootloader installation during installation of Red Hat Enterprise Linux 6.8 on Dell PowerEdge R630

Issue

• Installation of Red Hat Enterprise Linux 6.8 is moving as expected until the bootloader installation step comes in.
• Anaconda shows a lot of random numbers (actually mainly 0's) on the screen for about 90 seconds and throw an interrupt error.
• The system once rebooted can't be booted properly.