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I am in the process of installing Ubuntu GNOME 16.04 from a USB ISO onto my laptop that I want to dual boot with Windows 10. I got to the step for creating a partition and was allocating about 50 GB; however, ubi-partman crashed with the 141 exit code. I clicked try again, but there hasn't been any progress for an hour and it seems to be stuck in that same error notification.

What can I do at this point?

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I'm having the same issue. Similar reports from earlier LTS installs without resolution, it seems. People seem to think it's related to an existing partition scheme, and possibly the presence of already installed OSes... e.g. askubuntu.com/questions/186738/… – spinup Sep 18 '16 at 16:11
    
Depending on what you click in the interface, it seems this problem can also manifest as an installer crash with the "internal problem" dialog, generating a report related to ubiquity – spinup Sep 18 '16 at 20:27
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Allocate an ext4 partition using your free space in your live session gParted before starting the installation process. This solved the same issue for me.

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This solved that error. Easy, and no need to erase anything else. Basically, reformat the partition that will receive Ubuntu, as ext4 (via gparted, or use mkfs.ext4 /dev/partition_number if you have access to another Linux box). Be careful to reformat the right one! – Ring Ø Jun 17 '17 at 13:20
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I had a similar problem and tried for hours to get past that point in the installer, but couldn't until I decided to wipe the drive. To save your windows product key, you may use produkey within windows. Then you can later reinstall windows from official install media if you wish. Hopefully you already backed up your data at the start of this process. If not, do it now! This process will erase all data currently on the drive.

Then, from your Ubuntu USB ISO:

  1. open GParted
  2. choose Device > create partition table, choose msdos type
  3. retry the Ubuntu installer, and it should now proceed past the error
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Wiping the drive seems an extreme approach. Not one that i would recommend lightly, especially without recommending backup – Elder Geek Apr 10 '17 at 14:44
    
@ElderGeek A problem with your partition scheme is very serious; wiping the drive is a solution on par with that problem. As I noted in the comments above, this solution was not recommended lightly. I investigated other avenues for solutions first. – spinup Apr 14 '17 at 19:22
    
You have my apologies if I misunderstood. I cannot find the comment you speak of, nor the part of your answer where you seem to consider loss of data at all. – Elder Geek Apr 15 '17 at 14:43
    
@ElderGeek Comments are under the original question above. Maybe they're only visible to me? Anyway, you're right that it can't hurt to give one more warning to back up their data -- I made the edit. I can't imagine someone editing their drive partitions without having a backup, then wiping the drive and not realizing they would lose data as a result. Then again, many things happen that I couldn't imagine... – spinup Apr 17 '17 at 16:53
    
Good edit. Over time I've realized the unimaginable happens with it seems unceasing regularity. ;-) – Elder Geek Apr 17 '17 at 17:04

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