Comment 46 for bug 1845289

I seem to have this exact issue:

   "Initial install 19.04, dual boot with Win10, everything fine; Upgrade to 19.10, Ubuntu boots fine, Win10 does not"

On a fully up to date 19.10 install, however, I seem to have one difference:

When I select in the grub menu to boot windows it throws an error similar to:

   "Alloc magic is broken at XXXXXX Press any key"

It seems like the same issue, but from what I can tell, I have the updated grub2 packages and still have this issue. Am I barking up the wrong tree?

grub-common 2.04-1ubuntu12.1
grub-efi-amd64 2.04-1ubuntu12.1
grub-efi-amd64-bin 2.04-1ubuntu12.1
grub-efi-amd64-signed 1.128.1+2.04-1ubuntu12.1
grub2-common 2.04-1ubuntu12.1