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My ExFAT partition is about 1TB and it takes chkdsk about 10 hours to check and clear the dirty bit flag. There is never an error. It is caused by the drive being disconnected in an unsafe manner (it is being used in a VM and sometimes that gets closed in a manner that is causing this). But I need to have an alternative to the 10 hour wait. I'm going to migrate the data to NTFS as soon as I can to hopefully avoid this problem.
Are you comfortable with a HEX editor? – Michael Frank – 2015-05-15T10:32:48.333
Yes. But tell me which one to use. – user898617 – 2015-05-15T11:18:08.770
Manually Reset or Clear Dirty Bit in Windows without using CHKDSK and read the comments to find out how it might work for exFAT. Of course, before starting, you should assume that you will make the entire physical drive completely and utterly broken (not just the partition) so make appropriate backups first. It might be faster to copy the files from the partition in question to another drive, format the "dirty" partition, and then copy the files back. – Andrew Morton – 2015-05-15T12:25:34.563
@AndrewMorton - unfortunately that article doesn't solve for ExFAT systems. – user898617 – 2015-05-15T13:54:08.707
@user898617 Please read past the link in my comment. – Andrew Morton – 2015-05-15T14:22:33.307
I've reformatted the drive. Backup and restore will probably take about 4 hours. – user898617 – 2015-05-15T14:34:52.273