Hi Aaron, I have a try to load the file "Platform/ApollolakeBoardPkg/CfgData/CfgDataDef.dsc", It should be the top level DSC file, but the problem remains.. Thanks, Gilpin ------------------ 原始邮件 ------------------ 发件人: "Jin, Huang&quot;&lt;huang.jin(a)intel.com&gt;; 发送时间: 2018年10月25日(星期四) 中午1:59 收件人: "雁过无痕"<gilpin.li@foxmail.com>;"Sbl-devel"<Sbl-devel@lists.01.org>; 主题: RE: [Sbl-devel] How to use the ConfigEditor tool to configure theboot options? Hi – Config Editor can only load the ‘top’ level DSC file, which is called ‘CfgDataDef.dsc’. It includes all other sub-DSC files. The top level DSC defines a complete configuration data structure so that the tool can view or patch a SBL configuration binary correctly. Thanks, Aaron From: Sbl-devel [mailto:sbl-devel-bounces@lists.01.org] On Behalf Of ???? Sent: Wednesday, October 24, 2018 10:37 PM To: Sbl-devel <Sbl-devel(a)lists.01.org&gt; Subject: [Sbl-devel] How to use the ConfigEditor tool to configure the boot options? Hi All, I am a newcomer, And I'm trying to configure the boot options by using ConfigEditor tool following this guild： https://slimbootloader.github.io/tools/index.html#configuration-tool After the ConfigEditor tool load Platform/ApollolakeBoardPkg/CfgData/CfgData_BootOption.dsc or Platform/ApollolakeBoardPkg/CfgData/Template_CfgData.dsc. The ConfigEditor tool show the loading error "list index out of range". But the file "Outputs/apl/CfgDataDef.dsc" can be loaded successfully. Who can help me on this? Thanks in advance!