{"id":31598,"date":"2021-02-08T15:56:02","date_gmt":"2021-02-08T20:56:02","guid":{"rendered":"https:\/\/mjtsai.com\/blog\/?p=31598"},"modified":"2021-06-30T16:33:29","modified_gmt":"2021-06-30T20:33:29","slug":"check-free-space-before-updating-to-big-sur","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2021\/02\/08\/check-free-space-before-updating-to-big-sur\/","title":{"rendered":"Check Free Space Before Updating to Big Sur"},"content":{"rendered":"<p><a href=\"https:\/\/mrmacintosh.com\/big-sur-upgrade-not-enough-hd-space-serious-issue-possible-data-loss\/\">Mr. Macintosh<\/a>:<\/p>\n<blockquote cite=\"https:\/\/mrmacintosh.com\/big-sur-upgrade-not-enough-hd-space-serious-issue-possible-data-loss\/\">\n<p>The macOS Big Sur upgrade is not checking for available HD space. The upgrade will run out of space and fail. Even worse, if FV2 encryption is enabled, you will be locked out of your data!<\/p>\n<p>[&#8230;]<\/p>\n<p>This isn&rsquo;t the first time I&rsquo;ve reported on update issues that could cause data loss. The 2019-001 Security update issue was close to this one. If you installed the 2019-001 Security Update and the Mac was encrypted, the user could be locked out.<\/p>\n<p>[&#8230;]<\/p>\n<p>If you have a T2 Mac, you will not be able to get into macOS recovery because your password will not work. This problem further complicates recovery efforts.<\/p>\n<p>[&#8230;]<\/p>\n<p>I feel for anyone who had this issue over the past 3 months. Almost every single situation ended up with an erase and reinstall losing all data.<\/p>\n<\/blockquote>\n\n<p>The problem only seems to affect updating <em>to<\/em> Big Sur, not updating from macOS 11.1 to 11.2.<\/p>\n\n<p>Previously:<\/p>\n<ul>\n<li><a href=\"https:\/\/mjtsai.com\/blog\/2019\/04\/11\/quantum-computing-and-apfs-free-and-used-space\/\">Quantum Computing and APFS: Free and Used Space<\/a><\/li>\n<\/ul>\n\n<p id=\"check-free-space-before-updating-to-big-sur-update-2021-02-19\">Update (2021-02-19): <a href=\"https:\/\/tidbits.com\/2021\/02\/10\/ensure-sufficient-free-space-before-upgrading-to-big-sur\/\">Adam Engst<\/a>:<\/p>\n<blockquote cite=\"https:\/\/tidbits.com\/2021\/02\/10\/ensure-sufficient-free-space-before-upgrading-to-big-sur\/\">\n<p>If you or someone you know ends up in the Boot Recovery Assistant loop after attempting to upgrade to Big Sur, there are various workarounds, depending on whether or not your Mac has a T2 chip and whether or not you have enabled FileVault.<\/p>\n<\/blockquote>\n\n<p><a href=\"https:\/\/9to5mac.com\/2021\/02\/15\/apple-fixes-bug-that-let-users-begin-macos-big-sur-installation-without-enough-space-available\/\">Filipe Esp&oacute;sito<\/a>:<\/p>\n<blockquote cite=\"https:\/\/9to5mac.com\/2021\/02\/15\/apple-fixes-bug-that-let-users-begin-macos-big-sur-installation-without-enough-space-available\/\">\n<p>Apple has finally fixed the issue with a new build of macOS Big Sur 11.2.1, which properly checks if the disk has the required space before starting the upgrade process.<\/p>\n<\/blockquote>","protected":false},"excerpt":{"rendered":"<p>Mr. Macintosh: The macOS Big Sur upgrade is not checking for available HD space. The upgrade will run out of space and fail. Even worse, if FV2 encryption is enabled, you will be locked out of your data! [&#8230;] This isn&rsquo;t the first time I&rsquo;ve reported on update issues that could cause data loss. The [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"apple_news_api_created_at":"2021-02-08T20:56:04Z","apple_news_api_id":"3468fca9-aa55-4b12-a973-82d122c2907c","apple_news_api_modified_at":"2021-06-30T20:33:33Z","apple_news_api_revision":"AAAAAAAAAAAAAAAAAAAAAw==","apple_news_api_share_url":"https:\/\/apple.news\/ANGj8qapVSxKpc4LRIsKQfA","apple_news_coverimage":0,"apple_news_coverimage_caption":"","apple_news_is_hidden":false,"apple_news_is_paid":false,"apple_news_is_preview":false,"apple_news_is_sponsored":false,"apple_news_maturity_rating":"","apple_news_metadata":"\"\"","apple_news_pullquote":"","apple_news_pullquote_position":"","apple_news_slug":"","apple_news_sections":"\"\"","apple_news_suppress_video_url":false,"apple_news_use_image_component":false,"footnotes":""},"categories":[2],"tags":[1607,131,1016,706,30,1891,2088],"class_list":["post-31598","post","type-post","status-publish","format-standard","hentry","category-technology","tag-apple-t2","tag-bug","tag-datacide","tag-filevault","tag-mac","tag-macos-11-0","tag-macos-recovery"],"apple_news_notices":[],"_links":{"self":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/31598","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/comments?post=31598"}],"version-history":[{"count":3,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/31598\/revisions"}],"predecessor-version":[{"id":31684,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/31598\/revisions\/31684"}],"wp:attachment":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/media?parent=31598"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/categories?post=31598"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/tags?post=31598"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}