{"id":813,"date":"2020-12-06T18:15:47","date_gmt":"2020-12-06T18:15:47","guid":{"rendered":"https:\/\/www.ecsdump.net\/?page_id=813"},"modified":"2020-12-06T18:15:47","modified_gmt":"2020-12-06T18:15:47","slug":"mbr-phase-1","status":"publish","type":"page","link":"https:\/\/www.ecsdump.net\/?page_id=813","title":{"rendered":"MBR Phase 1"},"content":{"rendered":"<p>In brief, control is passed from BIOS to the loaded MBR code at 07C0:0000. The code relocates itself to 07E0:0000, checks for a Boot Manager partition, and checks for a bootable partition. Once a bootable partition is found, the partition boot record or more correctly the BIOS parameter block (<a href=\"https:\/\/en.wikipedia.org\/wiki\/BIOS_parameter_block\" data-internallinksmanager029f6b8e52c=\"4\" title=\"BPB\" target=\"_blank\" rel=\"noopener\">BPB<\/a>) is loaded at 07C0:0000 and control is passed to it at 07C0:0000.<\/p>\n<p>Remember, as I understand the MBR is created by the LVM utility (ex: LVM \/NEWMBR). At this point the system is using INT13 calls to interface with the drive. The errors that can be encountered during this phase are:<\/p>\n<ul>\n<li>SYS01462<\/li>\n<li>SYS01463<\/li>\n<li>SYS01464<\/li>\n<\/ul>\n<p>More detailed information can be found here:<br \/>\n<a href=\"http:\/\/ecsdump.net\/wiki\/lvm-mbr-disassembled\">LVM MBR Disassembled<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In brief, control is passed from BIOS to the loaded MBR code at 07C0:0000. The code relocates itself to 07E0:0000, checks for a Boot Manager partition, and checks for a bootable partition. Once a bootable partition is found, the partition boot record or more correctly the BIOS parameter block (BPB) is loaded at 07C0:0000 and&hellip;<\/p>\n<p><a class=\"more-link\" href=\"https:\/\/www.ecsdump.net\/?page_id=813\" title=\"Continue reading &lsquo;MBR Phase 1&rsquo;\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-templates\/full-width.php","meta":{"footnotes":""},"categories":[],"tags":[],"wf_page_folders":[80],"class_list":["post-813","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.ecsdump.net\/index.php?rest_route=\/wp\/v2\/pages\/813","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ecsdump.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ecsdump.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ecsdump.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ecsdump.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=813"}],"version-history":[{"count":0,"href":"https:\/\/www.ecsdump.net\/index.php?rest_route=\/wp\/v2\/pages\/813\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ecsdump.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=813"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ecsdump.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=813"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ecsdump.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=813"},{"taxonomy":"wf_page_folders","embeddable":true,"href":"https:\/\/www.ecsdump.net\/index.php?rest_route=%2Fwp%2Fv2%2Fwf_page_folders&post=813"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}