[continued from previous message]   
      
   it's a hybrid boot. This might matter, if you were using a 2025 laptop   
   and it was Secure Boot only.   
      
      https://sourceforge.net/projects/boot-repair-cd/files/   
      
   The base program is in the Ubuntu/Mint repository, so it can also be   
   pulled into a LiveCD session with other materials you have on hand.   
      
   Since I didn't change UUID values, my boot of /dev/sdb would have worked   
   anyway. It is only if you correct the UUID situation, that a Boot Repair   
   is needed.   
      
   If I had succeeded in correcting the UUID (assign new values), then,   
   I could plug both the original 256GB device and the clone 250GB device,   
   and the "wrong partition" would not get used as my /home. This is why we   
   seek to have non-colliding UUID. If the boot identifiers are based   
   on UUID, then each GRUB must use the correct UUID values to be self   
   consistent. In this way, booting /dev/sda uses only partitions on SDA.   
   And booting /dev/sdb uses only partitions on SDB. We don't want any   
   boot accidents, where grub boots SDB and uses /dev/sda2. Important   
   user data could get put in the wrong place, if we're careless   
   with this stuff.   
      
   I think you can see there is room for better automation. We're still   
   treated very well, compared to if we had no tools at all :-) But there   
   is still some room for improvement on UUID issues.   
      
   If we didn't have the Boot Repair DVD, it would not be the end   
   of the world. We could go get the Gentoo installation manual   
   and learn how to chroot in and do the necessary GRUB re-installation   
   that way. The Boot Repair DVD merely helps you avoid dropping   
   to the command line and doing that.   
      
   *******   
      
   Storage devices come in two sizes   
      
     1024GB   <=== Some SSDs   
     1TB      <=== This is 1000 GB. You can get SSDs at 1000GB, and they   
                   will be labeled "1TB" to avoid confusion. If your original   
                   HDD was 1TB, you could buy a 1TB SSD.   
      
   When both devices are 1TB, the disk size in bytes is then exactly the same.   
   The value is *not* 1TB of course, it is the next-highest-number and that   
   number likely has some relation to CHS issues.   
      
   Exactly matching size, would allow "dd" to copy a disk. But the copy is   
   "too accurate", because you still have to assign new UUID to the destination   
   partitions. Then do a Boot Repair on the destination.   
      
      Paul   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)