7-Zip

Have 5,1GB file - it is ghost(*.gho) image of drive with Vista. I Compress it via commandline version of 7zip downloaded from official. Result is that output file is 3,9GB big, but contains only 772MB file in it instead od 5,1GB file, which was mention as the input. Unpacking of file create 772MB file.

Try total commander plugin, try commandline from official web. Trying switch off multithreading and change parameters of LZMA - result is still the same - wrong.

Mostly used setting: LZMA, 64MB dictionary, 64 word

other tries combines this with for example s=6GB param e.t.c.