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Currently my hard-drive is set to MBR and I want to change it to GPT which will naturally entail wiping of the hard-drive. I want to keep my Ubuntu install for which I plan to follow Official Ubuntu /home migration guide to transfer my /home to my external drive but as I understand it will cause permission problems if set as /home mount in my new Ubuntu installation since the new user's ID will not be the same as the current one. I've also looked at this excellent answer but it still leaves me with the user permissions question. How can I migrate to a new OS on the same machine without having to worry about user permissions?

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user3677331
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  • Just use the same user-name, you will not have permission-problems – mook765 Oct 08 '16 at 03:32
  • @mook765 using the Ubuntu guide or the answer on AskUbuntu? – user3677331 Oct 08 '16 at 03:43
  • If your hard-drive has MBR, Ubuntu is installed in legacy-mode. If you convert the drive to GPT you would have to reinstall, but in UEFI-mode. When you move your /home-partition to external drive before, just set the mount-point for this partition to /home and untick the formatting-checkbox during install. Use the same user-name as before. I run different distros, all of them point to the same folders, all distros use same username, user-id is 1000 on fresh install, so all distros have same user-id as well. – mook765 Oct 08 '16 at 04:34
  • @mook765 I read somewhere that there's no compulsion to install UEFI with GPT – user3677331 Oct 08 '16 at 04:37
  • Why do you convert to GPT, there is not much advantage from doing that. – mook765 Oct 08 '16 at 04:37
  • I'm hackintoshing☺ – user3677331 Oct 08 '16 at 04:38
  • UEFI lives from GPT, legacy from MBR, if you mix that up then do not cry when you run in problems. – mook765 Oct 08 '16 at 04:39

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