Long before I joined this List, I purchased a DVD and a thumb device from LinuxCollections. The DVD contained the first Jessie DVD, and, I'm guessing, the thumb device contained the rest.
I kept the same partitions that I had had on my old squeezy install. the first was /boot, the fifth was /, the sixth was /usr, the seventh was /var, the eighth was swap, the ninth was /tmp and the tenth was /home. The sizes I kept from squeezy; all were overly generous(my HD is one TB.) I reformatted them all with ext4 at first, then later with ext3, which what my old system had. [ Sorry for the vague terminology, I'm writing this on a loaner Windoze box many yards away from my own machine and documentation. ] The _many_ install attempts crashed at random points but after a while they congregated when I tried to choose a kernel. After choosing a kernel one must then choose the associated drivers. This crashed almost inevitably, although once I got through to stage where I received a black screen with the white text prompt 'grub>'. This was before the kernel was booted, and I have no clue how to use this, even if I once again get this far. I have tried choosing 'none' for a kernel. But then one must choose an installer. I've tried choosing grub, even tried using the ancient LILO. All produce red screens, indicating failures of one kind or other. I have discovered the informative 'tty4' where the progress of the installation is more copiously displayed. And now I'm meandering, for I don't know what further information to give, that will help the members here to make further suggestions. But I shall be grateful for any help I receive. Ala