How to diagnose suddenly failing grub boot from iso?












0















I have had my Ubuntu 18.04 system set up to optionally boot off several .iso files (on a different hard drive from /) and it's been working for a long time. I set it up using instructions on the Ubuntu wiki here. It worked well, I make Clonezilla backups, etc using this feature.



Recently, though, I tried to make a Clonezilla backup and the .iso wouldn't boot. I got an error message saying that it couldn't find the .iso. I checked and the .iso is still there in the same old spot. Testing showed that none of the .isos will boot any more.



I have made no hardware changes nor have I moved any of the .iso files.



I know there have been 2 updates to grub so far this year.



What is the suggested procedure for troubleshooting this problem? Since I didn't (knowingly at least) change anything, I am at a loss as to where to start. I compared the scripts in /etc/grub.d with the ones from a clean install, and I saw only the changes I had made. Did the updates to grub remove this functionality?









share



























    0















    I have had my Ubuntu 18.04 system set up to optionally boot off several .iso files (on a different hard drive from /) and it's been working for a long time. I set it up using instructions on the Ubuntu wiki here. It worked well, I make Clonezilla backups, etc using this feature.



    Recently, though, I tried to make a Clonezilla backup and the .iso wouldn't boot. I got an error message saying that it couldn't find the .iso. I checked and the .iso is still there in the same old spot. Testing showed that none of the .isos will boot any more.



    I have made no hardware changes nor have I moved any of the .iso files.



    I know there have been 2 updates to grub so far this year.



    What is the suggested procedure for troubleshooting this problem? Since I didn't (knowingly at least) change anything, I am at a loss as to where to start. I compared the scripts in /etc/grub.d with the ones from a clean install, and I saw only the changes I had made. Did the updates to grub remove this functionality?









    share

























      0












      0








      0








      I have had my Ubuntu 18.04 system set up to optionally boot off several .iso files (on a different hard drive from /) and it's been working for a long time. I set it up using instructions on the Ubuntu wiki here. It worked well, I make Clonezilla backups, etc using this feature.



      Recently, though, I tried to make a Clonezilla backup and the .iso wouldn't boot. I got an error message saying that it couldn't find the .iso. I checked and the .iso is still there in the same old spot. Testing showed that none of the .isos will boot any more.



      I have made no hardware changes nor have I moved any of the .iso files.



      I know there have been 2 updates to grub so far this year.



      What is the suggested procedure for troubleshooting this problem? Since I didn't (knowingly at least) change anything, I am at a loss as to where to start. I compared the scripts in /etc/grub.d with the ones from a clean install, and I saw only the changes I had made. Did the updates to grub remove this functionality?









      share














      I have had my Ubuntu 18.04 system set up to optionally boot off several .iso files (on a different hard drive from /) and it's been working for a long time. I set it up using instructions on the Ubuntu wiki here. It worked well, I make Clonezilla backups, etc using this feature.



      Recently, though, I tried to make a Clonezilla backup and the .iso wouldn't boot. I got an error message saying that it couldn't find the .iso. I checked and the .iso is still there in the same old spot. Testing showed that none of the .isos will boot any more.



      I have made no hardware changes nor have I moved any of the .iso files.



      I know there have been 2 updates to grub so far this year.



      What is the suggested procedure for troubleshooting this problem? Since I didn't (knowingly at least) change anything, I am at a loss as to where to start. I compared the scripts in /etc/grub.d with the ones from a clean install, and I saw only the changes I had made. Did the updates to grub remove this functionality?







      boot grub2 iso





      share












      share










      share



      share










      asked 2 mins ago









      Organic MarbleOrganic Marble

      11k63458




      11k63458






















          0






          active

          oldest

          votes











          Your Answer








          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "89"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1118395%2fhow-to-diagnose-suddenly-failing-grub-boot-from-iso%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          0






          active

          oldest

          votes








          0






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Ask Ubuntu!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1118395%2fhow-to-diagnose-suddenly-failing-grub-boot-from-iso%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          GameSpot

          connect to host localhost port 22: Connection refused

          Getting a Wifi WPA2 wifi connection