macOS Base System Option missing from booting the OpenCore USB

My setup:

Motherboard MSI B450 GAMING PRO CARBON AC ATX AM4

CPU AMD Ryzen 5 3800X

Video Card XFX AMD Radeon™ RX 5700 XT 8GB GDDR6 THICC II Ultra

Memory G.Skill Ripjaws V 2 x 8 GB DDR4-3200C14

Storage ADATA XPG SX8200 Pro 1TB M.2-2280 NVMe SSD

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Problem:

I don't see the option for macOS Base System (External) / Install macOS Catalina (External). Instead I only get these two options. And when I enter OpenShell.efl I get stuck.

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So far, I've been following the OpenCore Guide and finished USB creation and config.list(I have passed the Sanity Checker). I have also

• Disabled:

  • "Fast Boot"
  • "CSM"

• Enabled:
  "EHCI/XHCI Hand-off"

  • "Above 4G decoding"

Booting Options

If anyone has encountered the same issue, please let me know, thank you in advance.