Partition 2 overlaps 5

In this quote there is no indication of error. Or you have not put it.

Here everything is perfect also. No error.

It doesn't means it overlaps.

In MSDOS style partition table, there can be only 4 primary partitions or at most 3 primary partitions and one extended partition. Extended partitions hold logical partitions. All logical partitions start from 5. In this case there is only one primary partition sdc1. sdc2 is an extended partition. sdc5 to sdc16 are logical partitions of sdc2 extended partition.

For more info on extended partitions see this wikipedia article.

Note: Please wrap posted output in [CODE] ... [/CODE] tags to preserve formatting.

I don't see anything wrong in the "fdisk -lu" output. The spacing between sdc11 and sdc12 is unusual, and I suppose some overly sensitive program might complain about sdc11 extending past the end of a 1MB boundary, but there is nothing actually wrong with that. I see nothing overlapping, and there is a gap between all partitions, the smallest being the 913 sectors between sdc11 and sdc12. (There is over 16GB of unused space between sdc15 and sdc16.)

ubuntu@ubuntu:~$ sudo gparted
======================
libparted : 2.3
======================

(gpartedbin:6012): GLib-CRITICAL **: Source ID 7 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 6 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 10 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 9 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 13 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 12 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 16 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 15 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 19 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 18 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 38 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 37 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 64 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 63 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 79 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 78 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 87 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 86 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 91 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 90 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 95 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 94 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 98 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 97 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 101 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 100 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 104 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 103 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 107 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 106 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 176 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 175 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 249 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 248 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 324 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 323 was not found when attempting to remove it
Can't have overlapping partitions.

(gpartedbin:6012): GLib-CRITICAL **: Source ID 352 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 351 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 358 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 357 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 361 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 360 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 365 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 364 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 369 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 368 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 373 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 372 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 376 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 375 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 380 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 379 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 384 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 383 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 387 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 386 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 390 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 389 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 393 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 392 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 396 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 395 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 404 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 403 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 411 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 410 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 417 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 416 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 422 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 421 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 430 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 429 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 435 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 434 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 442 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 441 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 447 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 446 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 452 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 451 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 458 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 457 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 461 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 460 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 464 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 463 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 471 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 470 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 477 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 476 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 482 was not found when attempting to remove it

(gpartedbin:6012): GLib-CRITICAL **: Source ID 481 was not found when attempting to remove it

Nothing to worry about. This type of nonsense gets spit out by some graphical applications when you start them from a command-line terminal. You can safely ignore it.

Incidentally, the general recommendation is to use “gksudo” instead of just “sudo” when you start a graphical application from the terminal as root—e.g.,
Not that it will suppress the nonsense, but people more knowledgeable than I am, will tell you that “sudo” may in such instances get you into trouble because it may cause the creation of files owned by “root” within your home directory. I don’t personally remember having encountered this issue, though. I do remember accidentally changing ownership of a part of my home directory tree to the “root” user once, and the results weren’t pretty.

And, by the way, as others have already suggested, there’s nothing wrong with your partitions.

A disk can have up to four “primary” partitions under the MBR scheme, numbered 1 through 4. If you want more than 4 partitions, then one of these partitions must be an “extended” partition. In your case, that’s partition number 2.

An extended partition is really just a container, into which you can create “logical” partitions. Logical partitions always have numbers starting at 5. They should be contained entirely within the extended partition, so when you look at their locations, they will seem to overlap with the extended partition. In actual fact, you cannot directly use the extended partition, but you will have to create one or more logical partitions within it in order to use its space.

Thanks for all the replies. It still said, "Can't have overlapping partitions." in the middle of all the instances of "GLib-CRITICAL **: Source ID ### was not found when attempting to remove it" I guess I can safely add Windows 10 tech preview and Ubuntu Mate 14.04 LTE when I have the time and am in the mood.

Hmmm... Looking closer to your partition list, I believe there may be a problem after all.

Your extended partition, “/dev/sdc2”, begins on sector 29298686. The first logical partition that it contains, “/dev/sdc5”, begins on sector 29298688—which is just 2 sectors into the container. I’m not sure if that’s a valid layout, since I seem to remember that an extended partition requires more free space at its beginning. In any case, when I attempt to create an extended partition, and accept the default values suggested by the “fdisk” utility, the first logical partition begins no less than 2048 sectors into the extended partition.

If possible, I would suggest you delete the “/dev/sdc5” partition and try to recreate it. In my opinion, there should be more free space at the beginning of the extended partition in order to arrive at a valid layout.

It's valid. I do that all the time. The extended partition header is just one sector.

OK. Thanks for the info.
In that case, I have no idea why the complaints about "overlapping partitions" keep happening.

I set up a drive with the exact size and partitioning shown in #18, and gparted (version 0.20.0, from SystemRescueCD) had no problem whatsoever with it.

Hmmm... Are we actually sure that the warning about overlapping partitions has anything to do with the disk that we're looking at? Couldn't the problem sit on another disk?

I added Windows 10 Tech Preview to the partition on sdb next to Win 8.1. I think it was sdb4 or sdb5. I then added Linux UbuntuMate 14.04 to sdc16. No issues. I will post the partition start and end points for the other two disks. Thanks for your continued support.