GParted 0.23.0 --enable-libparted-dmraid --enable-online-resize

Libparted 3.2

Shrink /dev/sda4 from 908.31 GiB to 810.66 GiB  00:00:01    ( ERROR )
    
calibrate /dev/sda4  00:00:00    ( SUCCESS )
    
path: /dev/sda4 (partition)
start: 1615872
end: 1906485504
size: 1904869633 (908.31 GiB)
check file system on /dev/sda4 for errors and (if possible) fix them  00:00:01    ( ERROR )
    
ntfsresize -i -f -v /dev/sda4
    
ntfsresize v2015.3.14 (libntfs-3g)
ERROR(2): Failed to check '/dev/sda4' mount state: No such file or directory
Probably /etc/mtab is missing. It's too risky to continue. You might try
an another Linux distro.

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