Don’t know if you’re still looking for a reply to this, but I had the same problem, with 128Gb images not fitting onto a 128Gb card.

It seems the issue is with the cards themselves being slightly different capacity depending on manufacturer. It appears the Sandisk / Samsung UltraXD cards that are recommended for these images have a slightly bigger capacity than other lesser know brands.

I bought 2 x 128Gb and 1 x 256Gb Integral Cards for my projects, but every time I went to write the image, it would say the cards weren’t big enough, even though they were legit, and brand new. It was something like:
“Image size 226484, Storage space 224286” – don’t quote those figures, but it was along those lines.

Now, the chefs make their images as close to the knuckle as possible, and so they’ll only fit on a specific card, I’m guessing the one they’re working with – It would make more sense to me to make the images just that bit smaller, to give them better card compatibility, but hey, what do I know?

There is another workaround, which is to further shrink the image, so it fits onto your card, but that’s not always an option for everyone. I know I myself have wasted so many hours already just trying to get the pre-built images to work, I’d never find the time to shrink, rebuild and create my own custom images, but each to their own.

Anyway, hope this helps a bit for you, in case you were still trying to find an answer.

I have the same problem. How to edit images?

chinese cheap/fake cards have less space than the original cards, even a few GB, R/W speeds are also slower than the original ones. I was buying cheaper cards and had similar problems.