Trying to dualboot linux and windows on my lenovo laptop however when i have go to my BIOS mode and want to change the boot order, there is no usb options available at all. Need some help, by the way i have UEFI type BIOS.

Usually you get a boot menu by pressing a special key which is not the key that gets you into the main UEFI setup menu. On my Lenovo tower it's F12. My hardware manual says:

Neither my laptop nor my PC will allow setting a USB as a boot device, although once in the boot menu I can select and boot from the USB device.

I think most current BIOSes have for security reasons totally disabled setting either optical disk or USB as a standard boot device.

I'd bet that the usb will show up under the hard drive order choices not any usb boot choice.

Most systems have a F key to select boot order at power on.

Some few computers may need to boot twice to get bios to enter the usb to the choices.

Guess you could boot to efishell too but that is way more complex.

what is name of iso and how did you put the iso onto the usb?

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i use rufus to put the zorin OS iso into flash drive however when i go to the bios boot order settings it just have my hard drive SSD as its main boot order even when i have the flash drive plug in to my laptop. i don't know what the problem is so i need some help from linux user who are more experienced than me as i am a newbie in the linux world. Sorry if i don't understand some complex terminology beforehand Haha.

Perhaps you need to disable secure boot to be able to set USB booting(?)

disable secure boot and fast boot in firmware/bios, fast boot under advance power settings in windows.

i have tried to disable the secure boot and fast boot but still no result. in the boot order in bios it only shows my SSD drive without any sign of my flash drive. my default bios setting is UEFI so i have even tried to change the boot settings to legacy first but still no result.

rufus has a dd mode that sometimes will work when the default doesn't. The dd option comes up when start is clicked.

have tried the DD mode too but it still didn't appear on the boot order when i press F12 nor do it appear when i want to change the boot order from the bios. should i try the NTFS mode rather than fat32 ? and i use GPT instead of MBR so does it have any impact on them? sorry since im new, i don't understand all that well

Normally the defaults work in rufus, msdos uefi and bios. You already tried gpt, try ntfs, I saw another thread where ntfs worked.

This is my bios settings.







is the setting the one that caused the USB option didn't appear on the boot order?

I found an older thread where the OP selected the following rufus options which worked:
Partition scheme and target system type: MBR partition scheme for UEFI
create a bootable disk using: ISO image select iso image to burn and select start

The Zorin installation guide uses Balena Etcher to create the bootable USB drive and although rufus does not specifically mention that Zorin ISO is known to work there could be problems. I would of thought using dd mode would work regardless... Unless you can test the USB drive on another computer you really don't know if it was created successfully.

From those images you seem to be in the wrong place.
That is in the bios itself, and you need to be in the boot menu.
For most machines F10, F11, or F12 will get to the boot menu while F1, F2, or Del will get into the bios setup.

With the USB stick plugged in, try rebooting and use the keys above to get to the boot menu then you should be able to select the USB stick to boot from. If it shows 2 separate entries for the USB stick one should be marked UEFI and that is the one to use for booting into UEFI mode for the install.

I see that secure boot is disabled and that is good.