{"id":11915,"date":"2021-01-20T08:01:52","date_gmt":"2021-01-19T23:01:52","guid":{"rendered":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=11915"},"modified":"2021-01-20T08:01:52","modified_gmt":"2021-01-19T23:01:52","slug":"gentoo-rpi-3-%e3%83%96%e3%83%bc%e3%83%88%e3%81%97%e3%81%be%e3%81%99","status":"publish","type":"post","link":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=11915","title":{"rendered":"Gentoo RPi (3) \u30d6\u30fc\u30c8\u3057\u307e\u3059"},"content":{"rendered":"\n

ブートしなくなったのにはいろいろ複雑な原因が絡んでいるようです．<\/p>\n\n\n\n

ひとつは，USB-SSDドライブに供給する電流の不足と思われます．ぎりぎり足りたり足りなかったりするので，USB2なら虹まで進むのにUSB3では虹まで進まないのでしょう．<\/p>\n\n\n\n

電流問題を避けるためSDカードからブートさせてみようと，手持ちの32GB SDカードに，SSDの内容を移して，cmdline.txtと\/etc\/fstabのディスクの既述をPARTUUIDにして起動させたら，あっさり起動しました．何もしてないのに壊れた<\/a>のは，筆者のせいではなかったようです．<\/p>\n\n\n\n

USB-SSDドライブについても，cmdline.txtの内容を見直して，elevationなんとかと，fsckなんとかを外して，Slackware ARMのものとほぼ同じ内容にしてみたところ，起動するようになりました（ただし，USB2か，USB3の上のポートのみOK）．<\/p>\n\n\n\n

しかし，rootでログインして，一晩そのままアイドル状態にしておいたところ，途中でUSBドライブがディスコネクトされて，朝には正常動作しなくなっていました．<\/p>\n\n\n\n

USBドライブを使うには，外部電源式のUSB-HUBを間に入れるしかなさそうです．<\/p>\n","protected":false},"excerpt":{"rendered":"

\u30d6\u30fc\u30c8\u3057\u306a\u304f\u306a\u3063\u305f\u306e\u306b\u306f\u3044\u308d\u3044\u308d\u8907\u96d1\u306a\u539f\u56e0\u304c\u7d61\u3093\u3067\u3044\u308b\u3088\u3046\u3067\u3059\uff0e \u3072\u3068\u3064\u306f\uff0cUSB-SSD\u30c9\u30e9\u30a4\u30d6\u306b\u4f9b\u7d66\u3059\u308b\u96fb\u6d41\u306e\u4e0d\u8db3\u3068\u601d\u308f\u308c\u307e\u3059\uff0e\u304e\u308a\u304e\u308a\u8db3\u308a\u305f\u308a\u8db3\u308a\u306a\u304b\u3063\u305f\u308a\u3059\u308b\u306e\u3067\uff0cUSB2\u306a\u3089\u8679\u307e\u3067\u9032\u3080\u306e\u306bUSB3\u3067\u306f\u8679\u307e\u3067\u9032\u307e\u306a\u3044\u306e\u3067\u3057\u3087\u3046\uff0e \u96fb\u6d41\u554f\u984c\u3092\u907f\u3051\u308b\u305f\u3081SD\u30ab\u30fc\u30c9\u304b\u3089\u30d6\u30fc\u30c8\u3055\u305b\u3066\u307f\u3088\u3046\u3068\uff0c\u624b\u6301\u3061\u306e32GB SD\u30ab\u30fc\u30c9\u306b\uff0cSSD\u306e\u5185\u5bb9\u3092\u79fb\u3057\u3066\uff0ccmdline.txt\u3068\/etc\/fstab\u306e\u30c7\u30a3\u30b9\u30af\u306e\u65e2\u8ff0\u3092PARTUUID\u306b\u3057\u3066\u8d77\u52d5\u3055\u305b\u305f\u3089\uff0c\u3042\u3063\u3055\u308a\u8d77\u52d5\u3057\u307e\u3057\u305f\uff0e\u4f55\u3082\u3057\u3066\u306a\u3044\u306e\u306b\u58ca\u308c\u305f\u306e\u306f\uff0c\u7b46\u8005\u306e\u305b\u3044\u3067\u306f\u306a\u304b\u3063\u305f\u3088\u3046\u3067\u3059\uff0e USB-SSD\u30c9\u30e9\u30a4\u30d6\u306b\u3064\u3044\u3066\u3082\uff0ccmdline.txt\u306e\u5185\u5bb9\u3092\u898b\u76f4\u3057\u3066\uff0celevation\u306a\u3093\u3068\u304b\u3068\uff0cfsck\u306a\u3093\u3068\u304b\u3092\u5916\u3057\u3066\uff0cSlackware ARM\u306e\u3082\u306e\u3068\u307b\u307c\u540c\u3058\u5185\u5bb9\u306b\u3057\u3066\u307f\u305f\u3068\u3053\u308d\uff0c\u8d77\u52d5\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\uff08\u305f\u3060\u3057\uff0cUSB2\u304b\uff0cUSB3\u306e\u4e0a\u306e\u30dd\u30fc\u30c8\u306e\u307fOK\uff09\uff0e \u3057\u304b\u3057\uff0croot\u3067\u30ed\u30b0\u30a4\u30f3\u3057\u3066\uff0c\u4e00\u6669\u305d\u306e\u307e\u307e\u30a2\u30a4\u30c9\u30eb\u72b6\u614b\u306b\u3057\u3066\u304a\u3044\u305f\u3068\u3053\u308d\uff0c\u9014\u4e2d\u3067USB\u30c9\u30e9\u30a4\u30d6\u304c\u30c7\u30a3\u30b9\u30b3\u30cd\u30af\u30c8\u3055\u308c\u3066\uff0c\u671d\u306b\u306f\u6b63\u5e38\u52d5\u4f5c\u3057\u306a\u304f\u306a\u3063\u3066\u3044\u307e\u3057\u305f\uff0e USB\u30c9\u30e9\u30a4\u30d6\u3092\u4f7f\u3046\u306b\u306f\uff0c\u5916\u90e8\u96fb\u6e90\u5f0f\u306eUSB-HUB\u3092\u9593\u306b\u5165\u308c\u308b\u3057\u304b\u306a\u3055\u305d\u3046\u3067\u3059\uff0e<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_daextam_enable_autolinks":"","footnotes":""},"categories":[18,8,27],"tags":[],"class_list":["post-11915","post","type-post","status-publish","format-standard","hentry","category-gentoo","category-linux","category-rasapberry-pi"],"publishpress_future_action":{"enabled":false,"date":"2026-05-14 00:39:05","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts\/11915","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11915"}],"version-history":[{"count":0,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts\/11915\/revisions"}],"wp:attachment":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11915"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11915"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11915"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}