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bahar
Cadet
Cadet
  • 4,284 Views

Cannot boot from USB for RHCSA remote exam

Hi,

I am trying to burn RHEL exam image in order to test it prior my exam this Friday, however, I am unable to boot up from the USB drive. I am very familiar with changing boot order from BIOS etc.. But I guess the image itself isn't bootable, here are different steps I tried:

  • Burn image using Fedora Image Writed => Failed, image is burned but not bootable (tried 2 USBs and 1 external HDD)
  • Burn image using dd on RHEL machine => Failed, image is burned but not bootable
  • Burn image using Rufus on RHEL machine => Failed, image is burned but not bootalbe
  • Creating a VM and use the downloaded ISO image to boot => Failed, unable to boot

I have re-downloaded the image once again in case the first one was damaged somehow, but still no success, if anyone has a suggestion, please let me know.

I am using this link to download the ISO: https://rhdc-static-assets-prod.s3-us-west-2.amazonaws.com/downloads/training-certification/rhrexboo...

EDIT: SecureBoot was enabled, after disabling it, it worked just fine

Labels (2)
10 Replies
EmanuelHaine
Flight Engineer
Flight Engineer
  • 4,061 Views

Thanks for your update!

  • 3,938 Views

try disabling the secure boot option in bios

 
aman2
Cadet
Cadet
  • 3,758 Views

I have the same issue, The bootable USB is not readable somehow.
As soon as I burn the image the USB is not detected by my system and USB does not reflect in my BIOS.
and when I try to reformat the USB the tool automatically reads the USB to format

  • 3,444 Views

I am also facing, Cannot boot from USB for RHCSA remote exam

JoyS
Cadet
Cadet
  • 2,185 Views

Editing BIOS and changing Secure Boot to Disabled, worked like a charm.

garciva2806
Mission Specialist
Mission Specialist
  • 1,666 Views

hi,

 

i've now downloaded the rhrexboot.iso 4 times now and tried opening it to create

a bootable USB drive. I've tried this on my desktop and my laptop with no success.

the same old messge comes up "the disc image file is corrupted". 

is there another URL download link I can try (it looks like i may need to re-schedule my exam because of this).

aman2
Cadet
Cadet
  • 1,665 Views

Use etcher tool to make your to make it work.
Mayo
Cadet
Cadet
  • 1,000 Views

After wrting the ISO file on my USB and i restart my laptop to boot from the usb, i get a message "selected boot image did not authenticate. Press <enter> to continue". when i press the enter key, it took me back to select boot disk. PLEASE who can help, my exam is near

AnithaRaaji
Moderator
Moderator
  • 981 Views

Hi,

The Exam iso is not secure boot compliant and hence verify if secure boot is disabled  to proceed with the booting. 

 

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