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File-Based Write Filter (FBWF) allows Windows XP Embedded (XPe) to maintain the appearance of read and write access to write sensitive or read only storage. FBWF makes read and write access transparent to applications.

I've heard (for example here that FBWF is working also on non embedded versions of windows 7 - but this appears like a hack.

I'd like to know if FBWF is indeed supported on regular windows 7

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up vote 1 down vote accepted

It appears that it is supported on Windows XP (I'm assuming that where Windows XP supports this sort of feature that Windows 7 should too), although documentation is scarce (so someone wrote their own guide for using it):

  Guide to using FBWF on Windows XP Pro

IMPORTANT NOTE: Since this effects the file system, make sure you have full backups of all your important data before you begin, especially because it's [apparently] not well-documented.

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This look like an "unofficial" method. do you know if it's legal? – Ophir Yoktan May 31 '11 at 18:50
@Ophir Yoktan: Well, a lack of documentation will cause people to figure out how to do things on their own with an in-demand technology, so I don't see any problem with labeling that information as "unofficial." As far as the law is concerned, I'm not a lawyer but I doubt there's anything in the law books about FBWF technology that would make it legal or illegal. – Randolf Richardson May 31 '11 at 19:04

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