Jerome Fine replies: I answered Nick Oliviero privately since I did not think that anyone else might be interested. While I have everything on one computer now, there is quite a lot! I am attempting to copy as many different RT-11 distributions to a CD as I can find. I did boot on RK05 under E11: V02C-02 20-Nov-1975 both SJ and FB V03B-00 date not reliable both SJ and FB I doubt that E11 could boot both of the above versions and not be able to boot V02B. The V20C that I just tested was acquired in Montreal about 2 years ago. I acquired a number of RK05 media along with an RK05 drive. A year later I was able to borrow an RK05 controller and copy the media to a Sony SMO S-501 media. I am attempting to make up a "pristine" RK05 distribution for V02C, but I have doubts I will be able to do so. Can anyone else help. I probably have all or at least most of the files, but the order is in question. I also have V03B as well from an RK05, BUT the media had a lot of bad blocks, so probably many files are bad. In addition, I am confident that I have a V4.00C image on an RK05, but it is not yet "pristine". In particular, the Volume ID / Owner may be incorrect, and the order of the files could be different. Plus there could be other aspects that do not match, but I am confident it is close enough at this point unless someone else has a copy that I could compare with? In general, does anyone have any RT-11 distributions for V1x, V2x, V3x and V4x that can be checked against other copies? I prefer RK05, but they seem very difficult to fine, so any media would be gratefully appreciated! I think I also have that image as well. Do you know what device is used? I will try with an RX01 first. Sincerely yours, Jerome Fine -- If you attempted to send a reply and the original e-mail address has been discontinued due a high volume of junk e-mail, then the semi-permanent e-mail address can be obtained by replacing the four characters preceding the 'at' with the four digits of the current year.