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

==  ==

===  ===

You need to make a USB that supports UEFI boot. There are a few ways:

====  ====

# Insert the USB.
# Open Rufus.
# Select your Zorin ISO.
# Set: * Partition scheme: GPT * Target system: UEFI (non-CSM) * File system: FAT32
# Start the write process.

====  ====

<syntaxhighlight lang="bash">
sudo dd if=zorin.iso of=/dev/sdX bs=4M status=progress conv=fsync

</syntaxhighlight>

* Make sure /dev/sdX is your USB (not /dev/sda!).
* FAT32 format is important; some older HPs won’t boot NTFS for UEFI.

====  ====

* Balena Etcher works on Linux, Windows, or Mac.
* It automatically makes the USB bootable in UEFI mode.

===  ===

After creating the new USB, boot the laptop and press F9.
You should see an entry like:

<pre>
UEFI: USB Disk 2.0

</pre>

instead of just USB Hard Drive 1.

===  ===

Once booted in UEFI mode, confirm:

<syntaxhighlight lang="bash">
[ -d /sys/firmware/efi ] && echo "UEFI mode" || echo "Legacy mode"

</syntaxhighlight>

It must print UEFI mode. Only then can you reinstall GRUB in UEFI mode.

===  ===

After booting UEFI Live session, follow these steps:

<syntaxhighlight lang="bash">
sudo mount /dev/sda3 /mnt
sudo mount /dev/sda2 /mnt/boot/efi
sudo mkdir -p /mnt/boot/efi/EFI/BOOT
for i in /dev /dev/pts /proc /sys /run; do sudo mount --bind $i /mnt$i; done
sudo chroot /mnt
grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=Zorin --removable
update-grub
exit
for i in /run /sys /proc /dev/pts /dev; do sudo umount /mnt$i; done
sudo umount /mnt/boot/efi
sudo umount /mnt
sudo reboot

</syntaxhighlight>

💡 Key Insight:
Your EliteBook cannot UEFI-boot a Legacy-only USB stick, so all previous UEFI GRUB install attempts failed. Once you boot from a proper UEFI USB, the GRUB installation will succeed and HP firmware will detect it.

If you want, I can give step-by-step instructions for making a Zorin USB that will be UEFI-bootable on your HP 8460p, specifically optimized for this laptop.

Do you want me to do that?


'''Prompt:'''
I re-created the USB drive from Etcher, but I still do not see a UEFI:USB Disk 2.0, I only see USB Hard Drive 1 - USB DISK 2.0

'''ChatGPT:'''
Ah — now we’re zeroing in. This is not a GRUB or Zorin problem, it’s an HP 8460p firmware quirk.

Even if the USB is created as UEFI-bootable, older HP EliteBooks often do not show a UEFI USB entry if the USB is:

# Too large (>32 GB) — HP BIOS often only lists UEFI USB drives up to 32 GB.
# Formatted NTFS — HP UEFI only boots FAT32 USB sticks.
# Missing a proper EFI/BOOT/BOOTX64.EFI path — the UEFI firmware looks specifically for this path.

Etcher sometimes writes the ISO in a “hybrid” mode that doesn’t create a proper EFI boot path visible to HP BIOS. This explains why you only see USB Hard Drive 1 — the Legacy boot option.