Potatoes and Onions Grown Together?

Has anyone grown onions and potatoes together? How did it work out?

This is my first year growing potatoes, and I couldn't resist the onion starts at the farm co-op (they were 100 for only $2.99!). I didn't know where to put that many, so I thought to plant them in my potatoes. I'll be posting my progress as the growing season goes on, but I'd love any input as to what I can/could do better.

Below is a picture of the garden bed. It's about 10 feet long and a little over 2 feet wide. I planted 18 Yukon Gold, 3 Purple Majesty, and 3 red potatoes (forgot to write down the variety). They're in two rows, spaced 10-12 inches apart. To plant the potatoes, I dug two trenches about 3-4 inches deep, panted the potatoes, covered with the displaced soil. Then, in a row between the two potatoes rows, I placed red onion starts, 8-10 inches apart on TOP of the soil. I then covered everything with about 2-3 inches of duck bedding. As the season progresses, I plan on heaping on more duck bedding, leaf mulch, grass clippings and (if I get any) tree trimmings from the power company. I'm thinking of placing most of the mulch on top of the potatoes, making the potato/onion bed look concave. The method of planting is inspired by Dale's Three Day Garden and Back to Eden's method of planting potatoes

Any experience or input would be much appreciated!

Below is a picture of the potato/onion bed. It runs SE to NW, and the contour of the land down to NW. It's fenced to keep out my chicken & ducks!

For some reason the picture won't attach. I keep getting this message:

This site can’t be reached

The connection was reset.

Try:
Checking the connection
Checking the proxy and the firewall
Running Windows Network Diagnostics
Check your internet connection.
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Allow Opera to access the network in your firewall or antivirus settings.
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I tried editing to add it, but it wouldn't work. I'm tried to attach it in this post, but keep getting the same message. It's weird, because as long as I post or edit without an image, it works, but with an image I keep getting that message. I think this happened yesterday when I tried, unsuccessfully. to post this. Weirdness! I don't usually have these sort of problems. I'll try again later!

Fascinating! The ducks post, but not the potato bed. I'd uploaded that duck picture before, so maybe that's why it worked? I tried editing and reposting the potato bed in photoshop, but it also didn't want to post... I'll try another browser next...

It wouldn't work in Chrome browser, either.

This site can’t be reached

The connection was reset.
Try:
Checking the connection
Checking the proxy and the firewall
Running Windows Network Diagnostics
ERR_CONNECTION_RESET

I'll go to the Tinkering With This Site forum now .

Okay, trying again to post it, after fiddling around over in the Tinkering forum. It finally posted over there, so it should be able to post over here... i can hope!

Edit: Well, it wouldn't attach, but I can just link to that the image over in Tinkering...