{"id":177,"date":"2010-04-28T12:52:11","date_gmt":"2010-04-28T16:52:11","guid":{"rendered":"http:\/\/www.cs.toronto.edu:40006\/wlog\/?p=177"},"modified":"2010-04-28T12:52:11","modified_gmt":"2010-04-28T16:52:11","slug":"mbr-fa-it-pays-to-read-the-manual","status":"publish","type":"post","link":"http:\/\/www.cs.toronto.edu\/~jhancock\/wlog\/?p=177","title":{"rendered":"MBR FA: It pays to read the manual"},"content":{"rendered":"<p>While I was building an installer for debian on a usb stick, I ran the following:<\/p>\n<pre>install-mbr \/dev\/sdb\r\n\r\n<\/pre>\n<p>To fix a problem I was having at boot.\u00a0 It worked, but I then presented me with the following after booting the usb key:<\/p>\n<p><strong>MBR FA:<\/strong><\/p>\n<p>Some googling told me that I need to press &#8220;a&#8221; and then &#8220;1&#8221; at the next prompt to get this to boot, but reading the man page for <strong>install-mbr<\/strong> told me <em>why <\/em>I needed to do it in the first place (or at least a reasonable explanation for what happened).<\/p>\n<p>It turns out the install-mbr command sets up a boot loader that will give you a menu if a key is pressed during startup.\u00a0 My best guess is that it reads the boot menu selection as a keypress and stops the boot at the mbr prompt.\u00a0 There are ways to disable this in the man page, but it isn&#8217;t worth the effort for me since I can just type a and 1 to proceed with the boot.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>While I was building an installer for debian on a usb stick, I ran the following: install-mbr \/dev\/sdb To fix a problem I was having at boot.\u00a0 It worked, but I then presented me with the following after booting the usb key: MBR FA: Some googling told me that I need to press &#8220;a&#8221; and [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,56,57],"_links":{"self":[{"href":"http:\/\/www.cs.toronto.edu\/~jhancock\/wlog\/index.php?rest_route=\/wp\/v2\/posts\/177"}],"collection":[{"href":"http:\/\/www.cs.toronto.edu\/~jhancock\/wlog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cs.toronto.edu\/~jhancock\/wlog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cs.toronto.edu\/~jhancock\/wlog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cs.toronto.edu\/~jhancock\/wlog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=177"}],"version-history":[{"count":2,"href":"http:\/\/www.cs.toronto.edu\/~jhancock\/wlog\/index.php?rest_route=\/wp\/v2\/posts\/177\/revisions"}],"predecessor-version":[{"id":179,"href":"http:\/\/www.cs.toronto.edu\/~jhancock\/wlog\/index.php?rest_route=\/wp\/v2\/posts\/177\/revisions\/179"}],"wp:attachment":[{"href":"http:\/\/www.cs.toronto.edu\/~jhancock\/wlog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=177"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cs.toronto.edu\/~jhancock\/wlog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=177"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cs.toronto.edu\/~jhancock\/wlog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=177"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}