I hate Toshiba external disk driver’s fragile cable port … you have to keep your hands on while data are being transferred; otherwise you probably find the current article or this (a) or this (b).
This (a) has explained things pretty clearly, except for that you won’t find ntfsprogs in recent versions of Linux distributions, as the ntfsprogs project has been merged with the ntfs-3g project under Tuxera Inc. according to Wiki. The real attack works as described in Answer in this (b), except that one needs to check out the mount point by “sudo fdisk -l” and “sudo ntfsfix -b XXX” to get the program to start the fix, where XXX is to be replaced by the real mount point.
It is possible to have luck with Windows…😉 Have the faulty external drive attached. Try to go to the F2 Recover Mode / Tool Mode. Run checkdisc (even when windows cannot get acces to the faulty NTFS external drive). Then check the primary disk.. This will also put the external drive in Check Disk mode…. Then restart windows and with a bit luck: windows will fix all errors!!!! Happened to me! I had exact the problem above, now recovered with Windows and back to my Macbook for further datastorage😉