Missing hard drive space

[MG]

Progress 3 and 4 are mounted again tho expect them to disappear when reboot
Am going to plug them into a windows system
maybe not recogised as no label
disc sizes still well off

root at THUNDERCAT1:/home/max# mount /dev/sdc1 /media/External/usb3
root at THUNDERCAT1:/home/max# mount /dev/sdd1 /media/External/usb4
root at THUNDERCAT1:/home/max# mount /dev/sdb1 /media/External/usb2
$MFTMirr does not match $MFT (record 1).
Failed to mount '/dev/sdb1': Input/output error
NTFS is either inconsistent, or you have hardware faults, or you have a
SoftRAID/FakeRAID hardware. In the first case run chkdsk /f on Windows
then reboot into Windows TWICE. The usage of the /f parameter is very
important! If you have SoftRAID/FakeRAID then first you must activate
it and mount a different device under the /dev/mapper/ directory, (e.g.
/dev/mapper/nvidia_eahaabcc1). Please see the 'dmraid' documentation
for the details.
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