Solution : https://service.sap.com/sap/support/notes/107038 (SAP Service marketplace login required)
Key words : 
#install/collate/active = 1    #abap/locale_all/needed = 0    #rscp/tcp0b = tcp0c    #abap/set_text_env_at_new_mode = 1    #abap/import_char_conversion = 0    #path_to_codepage = $home/codepage/, #install/codepage/appl_server = 8500    #install/codepage/db/transp = 8500    #install/codepage/db/non_transp = 8500    #saptemu/codepage  = 8500    zcsa/system_language =, platform langu country modifier locale       charco charcomnls    --------------------------------------------------------------    osf1    ko                    ko_kr, euckr  8500   8500    osf1    ko    kr              ko_kr, entry          platform  langu country mod, installation / upgrade additional key words installation, euckr  8500   8500    osf1    en    kr              ko_kr, 0b country version cd-rom, platform  langu country mod, os> en    kr          <korean locale> 8500    8500    3
Related Notes : 
       
| 108569 | |
| 54059 | Korean Installation Guide |