{"id":11952,"date":"2021-01-22T08:36:10","date_gmt":"2021-01-21T23:36:10","guid":{"rendered":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=11952"},"modified":"2021-01-22T08:36:10","modified_gmt":"2021-01-21T23:36:10","slug":"efi%e8%a8%ad%e5%ae%9a%e3%81%ae%e5%be%a9%e7%bf%92","status":"publish","type":"post","link":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=11952","title":{"rendered":"EFI\u8a2d\u5b9a\u306e\u5fa9\u7fd2"},"content":{"rendered":"\n

Raspberry Pi 4 Gentoo ARM64用のSSDの組み替えをするのに，なんか思い切り勘違いをして，メインWS (Core i7)の旧メインWSパーティションにあるSlackwareと，EFIパーティションを破壊（もちろんソフト的な破壊😓）してしまいました．<\/p>\n\n\n\n

具体的には間違えてマウントして，rsyncに–deleteオプションを付けて，コピー先にしてしまいました．<\/p>\n\n\n\n

SlackwareはかつてのメインWSなので，ときどき手動ですが，バックアップをかけていました．最新のバックアップは2021年1月2日なので，悪くないです．そこで，全部コピーバックしましたが，EFIパーティションの中身を消してしまったので，それは自分で書いた記事<\/a>を頼りに修復しました．<\/p>\n\n\n\n

しかし，自分で書いた記事をちゃんと読まないから何回も失敗しました．<\/p>\n\n\n\n

今回読み飛ばした一番重要なポイントは，USBメモリーから起動する際，「BIOSでBootドライブを選ぶモードに入り，USBメモリーのUEFIを選びます．<\/strong>」です．次の時のために，太字にしておきました．<\/p>\n\n\n\n

EFI&GRUBが修復できて，なんとかブートするようになりましたが，SDDM<\/a>が立ち上がりません．そういえば，1月2日以降に，新しくメインWSに昇格したGentooのPlasmaが，画面のちらつきを頻発するので，長年愛用していたGT-640は諦めて，Core i7のオンチップビデオに切り替えたのでした．<\/p>\n\n\n\n

CUIでKernelのIntelのビデオチップをonにしてbuildしなおして，SDDMからPlasmaにログインできるようになり，Gentooもブートするようになりました．<\/p>\n","protected":false},"excerpt":{"rendered":"

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