First let me say it really SUCKS that MFSlive and Winmfs have the same unfixed bugs they did 3+ years ago I am trying to add a "B" drive larger than 1tb without using a modified kernel or wasting part of the drive. A great reason for doing this would be to retain the original 160gb internal drive and add a 1.5TB drive. I have successfully created the correct partition layout but when I try to manually add the new partitions to the superheader it seems not to work. The quick way you can try this yourself would be to attach a B drive larger than 1tb to the computer and run WinMFS. Select MFSadd and tell it to limit the partition to 1tb. Then boot into MFSlive and manually do an MFSadd on the drive itself. At that point your B drive partition layout should be something like - /dev/hdb2 1mb /dev/hdb3 1000mb /dev/hdb4 1mb /dev/hdb5 500mb If you try to manually add these two partitions with the manual command "mfsadd /dev/sda /dev/sdb /dev/sdb4 /dev/sdb5" it seems to work but I then booted back into windows and viewed the superheader through WinMFS and it didnt show the extra partitions. Is there an updated version of MFSadd that will do this properly?