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stevex
deepin
2017-01-12 05:47 deepin Hi. This worked for me to get W10 back in grub menu: you can install synaptic package manager to Deepin "sudo apt-get install synaptic" and then find grub packages using synaptic and mark them for "reinstallation". Then reboot and see if W10 is in boot menu. Hope it works for you.
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Manual 
I'm writing to give notice to a problem that is not new (possibly a bug but I think not) but I feel needs bringing to developers attention.This has happened to me at least 3 times now.
My partition is set up on UEFI/gpt so I can run DI alongside another LINUX os and a Windows 10 partition. It's triple boot. Each time there is a kernel upgrade or a significant upgrade of Deepin that requires a GRUB refresh, I lose my GRUB menu and cannot boot into DI at all.
The problem seems to be that a GRUB update only defaults to legacy mode. It doesn't seem to recognise the UEFI/gpt partitioning at all.
The first time I found this I simply reinstalled DI, but it is a lot of work to get things back to where they were. Over past months I have blocked kernel updates to avoid the problem.
After a lot of reading and failed attempts to reinstall the GRUB-efi-amd64, I simply went to my BIOS and reset it to read legacy parittions. BUT I now don't have Windows 10.
(I can still get into Windows via the BIOS boot menu - but I miss the convenience of having it listed in GRUB).
Just thought I should mention this. I have noticed a thread where someone had a similar problem some time ago.
Cheers
Platypus