Installing Factory Image on X220

[Shayan]

Hi everyone,
I have the stock images for Windows 7 and the Recovery for my X220 but the thing is the X220 doesn't have a DVD drive. I tried Rufus to flash the iso's but it gives an error that they can't be flashed to the USB.
Any ideas?

[rkawakami]

I can think of two options:

1) Obtain an Ultrabase Series 3 https://support.lenovo.com/us/en/solutions/migr-76765 Be sure it includes a DVD drive in the Ultrabay. They can be had for about $30 on eBay.
2) Try using a portable (external) DVD drive connected via USB

Either case would need the appropriate boot option in BIOS to be enabled.

[Shayan]

I'll look at those two options, Some people have tried poweriso and said it works so I'll try that as well.