Chkdsk output messages indicate a problem that may need to be fixed

[eldiener]

When running a check on a drive partition from Disk Manager I get as part of the chkdsk output:

Stage 1: Examining basic file system structure ...
The allocated length 0x37c000 is not in multiple of 0x10000 for attribute
of type 0x80 and instance tag 0x0.
The allocated length 0x138000 is not in multiple of 0x10000 for attribute
of type 0x80 and instance tag 0x2.
The allocated length 0xf000 is not in multiple of 0x10000 for attribute
of type 0x80 and instance tag 0x2.
The allocated length 0xb000 is not in multiple of 0x10000 for attribute
of type 0x80 and instance tag 0x2.
358144 file records processed. File verification completed.

The final end result of the check does say, despite the messages above:

Windows has scanned the file system and found no problems.

However the first quoted lines suggest something is wrong, but I do not know what they mean or how to fix them. The NTFS partition is shared on my computer by Windows 10 and various Linux distros. When I try to backup the partition from the gparted bootable disc program it tells me that there are hard disk problems and can not back up the parttition. The messages in the output above suggest a reason why gparted can not back up the partition.

Does anybody know what the messages about "allocated length" mean and how I might fix the partition so that these messages do not occur ?