Hi @JJhin.1  You should be add this section in file *.ld Your project but not to the file linker.ld. Generally You should be have separate two project: one for create customer loader and second project with TouchGFX. In the second project in the link...

Hi,Please look on this MOOC: https://www.st.com/content/st_com/en/support/learning/stm32-education/stm32-moocs/external_QSPI_loader.htmlWhy You add to the file linker.ld section?.extflashSection :{*(.extflash)} >QSPI