From: lws4art@gmail.com   
      
   Lothar Leidner wrote:   
   >   
   > System: Dual Boot Windows 11 / Ubuntu 2204 LTS, installed on the same SSD.   
   >   
   > To create more space, I wanted to move the Ubuntu /home directory to its   
   > own partition on a second hard disk drive (HDD). I followed the Ubuntu   
   > Handbook   
   > https://ubuntuhandbook.org/index.php/2024/08/separate-home-ubuntu/   
   > #more-47038, copied the original directory to /home_backup, and modified /   
   > etc/fstab.   
   >   
   > The result: Ubuntu no longer boots.   
      
   What was the error?   
      
   I have done this countless times. Most often is the error is a typo in   
   the UUID of the partition. I also modify and test not will a live   
   session but actually while booted locally.   
      
   1) Install drive and format and partition as you need. BTW install   
   gparted makes this easy:   
      
   sudo apt install gparted.   
      
   Note: if you give the partition a label like "NewHome" it makes things   
   ease because after leaving gparted it will auto mount with an easy path   
   rather than the long UUID:   
      
   /media/USERID/NewHome   
      
   2) In gparted it is easy to get the UUID which I copy and paste to a   
   text file for reference. You can also get the UUID from the command line   
   with:   
      
   sudo blkid   
      
   3) Copy not move profiles to new drive:   
      
   sudo cp -a /home/* /media/USERID/NewHome/   
      
   4) rename existing /home:   
      
   sudo mv /home /home.bak   
      
   5) create new home mount point:   
      
   sudo mkdir /home   
      
   6) Backup /etc/fstab (always good practice) then add new home mount to fstab   
      
   # example /dev/sdb1 is new home with   
   # UUID f0f67bec-f1f3-483a-be8e-37b08711e7ac   
   UUID=f0f67bec-f1f3-483a-be8e-37b08711e7ac /home ext4 defaults 0 2   
      
   7) Now mount is and check that you have all your files. You do not have   
   to reboot:   
      
   sudo mount -a   
      
   If you do that and all your files are there you should not have any   
   issue when you reboot. If your files are missing fix it now. You can   
   mount by device path to see if that works that way. For above example:   
   /dev/sdb1 /home ext4 defaults 0 2   
      
   try mounting again if that works then you made a mistake on the UUID   
      
   After everything working then reboot. And then you can remove /home.bak   
   when you are sure everything is okay.   
      
   >   
   > Now I wanted to undo everything, created a boot stick with live Ubuntu   
   > 24.04.3, was able to boot with it and access the hard drives, but only in   
   > read-only mode. My plan was to copy the backup home directory /home_backup   
   > back to /home and comment out the inserted line in /etc/fstab. Then, I   
   > thought, everything should work again as it did originally.   
   > My question: how can I access the partitions in write mode (from Live   
   > Ubuntu) and thus implement these changes? Moving the /home directory would   
   > be put on hold for the time being.   
   >   
   > Any help appreciated   
   > Lothar Leidner   
   >   
      
   you have to use sudo in command line to move files use copy   
   sudo cp -a   
      
   But I would check so things first to see what you may have done wrong.   
      
   1) is the UUID correct in fstab   
   2) any errors in fstab?   
   2) did you preserve ownership and permissions for profiles in home?   
   This is an easy mistake, usually system boots but you cannot login. You   
   have to recursively fix ownership and permissions   
      
      
   --   
   Take care,   
      
   Jonathan   
   -------------------   
   LITTLE WORKS STUDIO   
   http://www.LittleWorksStudio.com   
      
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