{"id":40,"date":"2021-03-19T14:42:49","date_gmt":"2021-03-19T13:42:49","guid":{"rendered":"http:\/\/horrillo.eu\/?p=40"},"modified":"2021-07-16T09:56:29","modified_gmt":"2021-07-16T08:56:29","slug":"copia-seguridad-mbr","status":"publish","type":"post","link":"https:\/\/horrillo.eu\/?p=40","title":{"rendered":"Copia de seguridad del mbr"},"content":{"rendered":"\n<p>Vamos a realizar una copia de seguridad del mbr de nuestro disco duro, con el comando <strong>dd<\/strong>. Tenemos toda la infromaci\u00f3n que necesitamos en la <a rel=\"noreferrer noopener\" href=\"https:\/\/es.wikipedia.org\/wiki\/Dd_(Unix)\" target=\"_blank\">wikipedia<\/a>. <\/p>\n\n\n\n<p>Supongamos el siguiente escenario, tenemos nuestro sistema de arranque instalado en la partici\u00f3n 1 de nuestro disco duro sda. Tenemos la carpeta <strong>\/boot<\/strong>, montada en la partici\u00f3n <strong>\/dev\/sda1<\/strong> y el resto del sistema en la partici\u00f3n 2, <strong>\/ <\/strong>montado en <strong>\/dev\/sda2<\/strong>. Si hemos montado el sistema de arranque mbr en el primer sector de nuestro disco duro <strong>\/dev\/sda<\/strong>, realizaremos la copia de seguridad de la siguiente manera:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">dd if=\/dev\/sda of=\/root\/mbr-backup bs=512 count=1<\/pre>\n\n\n\n<p>Seg\u00fan la wikipedia vemos los par\u00e1metros que le hemos pasado al comando <strong>dd<\/strong><\/p>\n\n\n\n<p>if = origen. Lee desde el archivo indicado como origen.<br>of = destino. Lee desde el archivo indicado como destino.<br>bs = Lee y escribe N bytes. En este caso le decimos que nos lea 512 bytes de \/dev\/sda<br>count = Copia N bloques del archivo de origen, en vez de procesar hasta el final.<\/p>\n\n\n\n<p>Por lo tanto le indicamos que nos cree un bloque de 512 bytes que es el tama\u00f1o del sector del mbr y nos lo guarde en la carpeta root con el nombre mbr-backup.<\/p>\n\n\n\n<p>Despu\u00e9s para restaurar nuestro mbr lo realizamos de la siguiente manera<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">dd if=\/root\/mbr-backup of=\/dev\/sda bs=512 count=1<\/pre>\n\n\n\n<p>Y ya tenemos restaurado nuestro sector de arranque del disco \/dev\/sda.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vamos a realizar una copia de seguridad del mbr de nuestro disco duro, con el comando dd. Tenemos toda la infromaci\u00f3n que necesitamos en la wikipedia. Supongamos el siguiente escenario, tenemos nuestro sistema de arranque instalado en la partici\u00f3n 1 de nuestro disco duro sda. Tenemos la carpeta \/boot, montada en la partici\u00f3n \/dev\/sda1 y [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6],"tags":[8],"class_list":["post-40","post","type-post","status-publish","format-standard","hentry","category-linux","tag-mbr"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Copia de seguridad del mbr - Mi blog<\/title>\n<meta name=\"description\" content=\"Copia de seguridad y restauraci\u00f3n del mbr.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/horrillo.eu\/?p=40\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Copia de seguridad del mbr - 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