in the 'administrative tools', 'comp. management', 'disc management' I chose properties of the partition I could not open and there under tools I checked for errors, with repair checked. That did the trick.
One partition of an external USB 2 HD, formatted NTFS, is unaccessable, it says it is corrupted and unreadable.
I tried run 'Chkdsk', but it says it is in read mode only as F parameter is not specified. I tried run 'Chkdsk/f.' but this cannot be found.
How to get access again?
Any free utility to help?

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