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There is a fair bit of talk out there about Protogon a rumored new File System for Windows 8.

After having installed the developer preview on bare metal hardware and in a virtual environment and it does not show up as an option for new partitions.

Is it only an option in the 'leaked' builds of Windows 8 and not the Developer Preview?

Blog posts about the new file system:

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yay, another new filesystem a linux driver has to be developed for... – hbdgaf Sep 21 '11 at 6:55
I don't see the point of Yet Another "File" System. Unless it can cook breakfast. . . – surfasb Sep 21 '11 at 9:19
"Protogon" is the codename used by Microsoft during development. The official name for this filesystem is REFS. – SecurityMatt Mar 8 '12 at 18:33
@SecurityMatt thanks, I updated the title. – Nick Josevski Mar 9 '12 at 4:15

All three of your links have referenced Protogon as a kernel level driver.

But I found it.

format D:/FS:protogon /Q

Where D is your drive.


Sounds like Protogon has been renamed to Resilient File System (ReFS).

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Did this work for you? I tried on dedicated hardware install of Win8 and a VM with no luck, just reports: 'format failed' after it starts 'creating file system structures' – Nick Josevski Sep 22 '11 at 0:00
It works on a 500GB Western digital. But it is preview software. Your milage may vary. I'd try a different motherboard. – surfasb Sep 22 '11 at 1:43

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