I know. I don't want install ExFat. There is no problem with this. It's time to fix Win98Dos and Win98 and make support for use ExFat. Here lies the rub. Blue Ray movies - 6,7,8GB. You know what I mean... Let me translate what RLoew said: [short version] It's *impossible*! [long version] It's *impossible* without a *major* rewrite of the whole OS. And, in case one ever did it, after a rewrite of such magnitude it wouldn't actually even *be* Win 9x anymore. Yes. The sole thing you asked was for someone to create an installable ExFat driver. This is impossible. Then, in your next post you denied this, and instead escalated to a full system rewrite. This, while possible, is improbable and, if done, would result in a totally different OS... That said, I don't see how do you intend to continue this thread... rloew and dencorso, I think you should tell MDGx about this that making an exfat driver for win9x is not possible as rloew said it would require rewriting the win9x architecture. not only that, exfat under win9x would have also required also a DRV or VXD driver for full exfat support, in case the DLL/SYS exfat drivers from xp/vista don't work under w9x. getting win9x to recognize and access exfat partitions is one thing; getting win9x to even read, write or format/partition exfat volumes is another.