thank you Alan_B!
yes, macrium is wonderful )
ok, partition is unmounted.
yes, I have deleted mrimg tto : no problems.
I have the same image in external hdd's like L:\ amd M:\ (usb)
in the second hdd E:\ I have macrium image of C:\ (active partition): no problems with defraggler, but the file is only 60GB.
problem with the image of E:\ (saved on the same disc E:\ 170GB)
also related to the defragmentation of E:\:
I will defragmet only the fragmented files in E:\ (not the whole disc) leaving off the macrium image of E (whilst macrium image of C.\ has been defragmented fine. no issue. perhaps defraggler encountred problems with this very big file.
ok, I agree with your explanation.
thank you for your reply.