Comment 3 for bug 961707

I don't think it's a win8 problem. At least it worked flawlessly when I tried it (Win 8 in virtual box). The output of bcdedit matched what I see on Win 7, and the boot mechanism worked the same. Besides, wubildr.mbr seems to be running fine, just can't find the wubildr.

The usual causes for your problem are:
1. no C:\wubildr
2. old bios and wubildr is > 137GB from start of drive
3. apparently severe fragmentation (?)

There are a few posts about win8 and wubi on ubuntuforums.org but they don't seem different from the usual wubi issues.