I am using ubuntu 13.04 and I can confirm that this issue is fixed in 1304.
Earlier I had to mount my ARCH partition before updating grub. But sine past one week os-prober detects arch without its partition being mounted.
I am using ubuntu 13.04 and I can confirm that this issue is fixed in 1304.
Earlier I had to mount my ARCH partition before updating grub. But sine past one week os-prober detects arch without its partition being mounted.