Editing Openai/690f8ac2-4e38-8012-b650-1cba68fd0972 (section)

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* You’ll be running pure Legacy BIOS mode.
* GRUB will install correctly into the MBR.
* No EFI partition or UEFI boot entries will be needed.

Would you like me to give you the exact fdisk sequence to create both the root and swap partitions right after converting to MBR (so you can skip the graphical installer’s partition tool)?


'''Prompt:'''
The EFI warning still appears.

'''ChatGPT:'''
Good — that’s actually very informative.
If you wiped the disk to MBR and confirmed Disklabel type: dos, yet the Zorin installer still gives an EFI warning, then one of three things must be true:

# The installer session itself is still detecting UEFI firmware (some HPs expose both Legacy & UEFI interfaces to the OS simultaneously).
# The Zorin 18 installer ISO may not fully respect BIOS-only mode (this sometimes happens with Ubuntu-based builds).
# There’s still a hidden GPT backup header at the end of the disk confusing the installer.

Let’s fix it completely by zeroing out the partition tables and confirming the disk is 100% MBR clean.