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A comment on OS/2 2.0, Summer ’91 Edition. Parent comment

Re:OS/2 2.0, Summer ’91 Edition by yuhong on Sunday April 09, 2017 @01:50PM (#14073447)
Early versions of NT supported HPFS, and NT of course still supports EA to this day.
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Re:OS/2 2.0, Summer ’91 Edition by chungy on Sunday April 09, 2017 @04:39PM (#14074251)
NTFS itself is directly derived from HPFS.
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Re:OS/2 2.0, Summer ’91 Edition by JdeBP on Monday April 10, 2017 @12:53AM (#14076133)
No, it is not. NTFS, if one looks at it, is a direct descendant of Files-11, the on-disc filesystem layout for VMS. ODS has several of the elements of NTFS:

* a master file table (INDEXF.SYS => $MFT)

* ACLs, with a system of ACL-bypass privileges

* a whole bunch of special files, with known fixed entries in the MFT, including a block bitmap file and a bad block file (BITMAP.SYS => $Bitmap, BADBLK.SYS => $BadClus)

In contrast, there are significant dissimilarities with HPFS.

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Re:OS/2 2.0, Summer ’91 Edition by nickpsecurity on Monday April 10, 2017 @01:07AM (#14076186)
That corroborates my reference a bit where author says they made changes to filesystem during the clone of VMS. There would be similarities between the two filesystems if this were true.
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