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http://anzalweb.ir/1398/02/23/security-boot-%da%86%db%8c%d8%b3%d8%aa-%d8%ba%db%8c%d8%b1-%d9%81%d8%b9%d8%a7%d9%84-%da%a9%d8%b1%d8%af%d9%86-%d8%b1%d9%81%d8%b9-%d8%a7%d8%b1%d9%88%d8%b1-security-boot-fail/