{"id":7345,"date":"2026-05-02T16:02:29","date_gmt":"2026-05-02T23:02:29","guid":{"rendered":"https:\/\/www.terabyteunlimited.com\/kb\/?post_type=lsvr_kba&#038;p=7345"},"modified":"2026-05-02T16:02:29","modified_gmt":"2026-05-02T23:02:29","slug":"windows-boot-error-blinitializedlibrary-failed-0xc00000bb","status":"publish","type":"lsvr_kba","link":"https:\/\/www.terabyteunlimited.com\/kb\/kb-articles\/windows-boot-error-blinitializedlibrary-failed-0xc00000bb\/","title":{"rendered":"Windows Boot Error BLinitializedlibrary Failed 0xc00000bb"},"content":{"rendered":"<p><strong><span style=\"color: #ff5500;\">Problem:<\/span><\/strong><\/p>\r\n<p>Windows fails to boot and displays a black screen error:<\/p>\r\n<blockquote>\r\n<p><span style=\"color: #ff0000;\">BLinitializedlibrary failed 0xc00000bb<\/span><\/p>\r\n<\/blockquote>\r\n<p><strong><span style=\"color: #ff5500;\">Cause:<\/span><\/strong><\/p>\r\n<p>This error can be caused by having more than the GPT Reserved partition in the MBR of a GPT drive or the GPT Reserved partition not being the first entry. Windows expects a single GPT Reserved holder as the first and only entry in the MBR of a GPT drive.<\/p>\r\n<p><strong><span style=\"color: #ff5500;\">Solution:<\/span><\/strong><\/p>\r\n<p>Check the GPT drive(s) and verify that only the GPT Reserved partition is in the MBR and that it's the first entry. If other partitions are needed in the MBR, make sure the GPT Reserved partition is the first entry.<\/p>","protected":false},"excerpt":{"rendered":"<p>Problem: Windows fails to boot and displays a black screen error: BLinitializedlibrary failed 0xc00000bb Cause: This error can be caused by having more than the GPT Reserved partition in the MBR of a GPT drive or the GPT Reserved partition not being the first entry. Windows expects a single GPT Reserved holder as the first [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"lsvr_kba_cat":[1817],"lsvr_kba_tag":[],"class_list":["post-7345","lsvr_kba","type-lsvr_kba","status-publish","hentry","lsvr_kba_cat-vista-win7-8-x-10"],"_links":{"self":[{"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/lsvr_kba\/7345","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/lsvr_kba"}],"about":[{"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/types\/lsvr_kba"}],"author":[{"embeddable":true,"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/comments?post=7345"}],"version-history":[{"count":1,"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/lsvr_kba\/7345\/revisions"}],"predecessor-version":[{"id":7346,"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/lsvr_kba\/7345\/revisions\/7346"}],"wp:attachment":[{"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/media?parent=7345"}],"wp:term":[{"taxonomy":"lsvr_kba_cat","embeddable":true,"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/lsvr_kba_cat?post=7345"},{"taxonomy":"lsvr_kba_tag","embeddable":true,"href":"https:\/\/www.terabyteunlimited.com\/kb\/wp-json\/wp\/v2\/lsvr_kba_tag?post=7345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}