Where are these mysterious log files, containing the phantom error codes?

Where are these mysterious log files containing the phantom error codes?

I’m not sure what you are asking.
Here is a list of error codes: https://forums.comodo.com/news-announcements-feedback-cb/comodo-backup-error-codes-t49652.0.html

Thanks

Comodo BU was working just fine, but has started failing at 84%. Says error writing in backup, back up process failed with code 100665. I have checked the target disk and Win 7 chkdisk says it has no problems.
Thanks for your assistance.

FYI, that’s Win 7 Home 64bit. I am not compressing the files thru Comodo, but am writing to a compressed HDD. It’s a full partition backup of C:. As I said before the same procedure has worked flawlessly in the past.

Hi

This error indicates that the operation could not be completed due to a file system limitation.
What file system do you have on destination? You can try NTFS to avoid the issue.

Thanks

It is NTFS, but the volume is compressed. I suppose that could impose some limitation. Thanks.