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SubjectRe: Want to help with NTFS
On Sun, Jul 09, 2000 at 06:08:03PM +0100, Anton Altaparmakov wrote:
> At 16:24 09/07/2000, Steve Dodd wrote:

> >I inferred from something Jeff said a while back that the volume management
> >stuff was storing data in blocks that were marked free in the block bitmap.
>
> I don't think so. This would cause corruption by the WinNT4 driver as
> well... (Unless there is a safe-guard in NT4 we are missing in linux.)

I may have inferred wrongly ;-) I also thought you had to update the NTFS
driver in WinNT4 to read (maybe certain sorts of) Win2K volumes?

> > From what I know of the on-disk structures, there's 8 bytes of "magic"
> > in the boot sector,
>
> That's news to me! - Which bytes (offsets?) are you referring to exactly?

[rearranged a bit:]
> Byte Ofs Length e.g. Meaning
> (bytes) Value
> 0x03 8 NTFS OEM Identifier

Interestingly, the current Linux NTFS code only checks the first 4 bytes
("NTFS")..

> My understainding of the boot sector is at the bottom of the email - it is
> described in the MS WinNT4 ws resource kit book along with the partition
> and mbr structures, I have integrated it into one structure for easier
> reading. - It doesn't have any magic AFAICS.

I meant "magic" in the sense of "unique type identifier"..

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