Why is this so hard to fix?

It started with the error stating that the file clfs.sys was missing or corrupted. Maybe something about 0xc000000f as well. It was (is) a Windows Vista Home Premium (Swedish only), pre installed on a DELL Inspiron 530S.

The recovery DVD did not help at all, even though it seems like a common problem when searching for solutions.

CLFS.sys is related to logging according to answers on some tech support forums. One solution tip was to boot into a linux distribution and remove some hidden $TxfLog file.

I did that, using a live ubuntu cd, but it did not work.

Then I tried using the Ultimate Boot Cd to check the hard drive for failures, but it passed all the tests.

I had already made backups of all data, but since there was so much space left I thought I might shrink the partition and recover the system to a new one.

Anyway, I started Parted Magic and promped it to test the file system using GParted. It said that “Cluster accounting failed at …: extra cluster in $Bitmap”

Totally 1 cluster accounting mismatches! GParted suggests that I run chkdsk /f and then reboot windows twice (is that the standard way of handling all NTFS problems?)

So the next natural step is to run chkdsk. Chkdsk is a windows tool, but the windows system won’t boot. I don’t want to pull the hard drive and connect it to a working windows system just to run chkdsk. Fortunately, there is a tool called ubcd4win which creates a live windows cd using the files from an original windows cd.

To be continued…

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