Hi
Unfortunately I have to have keep a dualboot option with Leap 15.2 and Windows 10 on my desktop computer in order to use a certain slide-scanner software, that will not run in linux (despite efforts…).
I have two SSDs in the computer; sda for Opensuse and sdb for Windows and It has worked until recently. Why the Windows option went missing I can not tell. It was not something that I did actively.
I have read several posts to try to fix the issue myself and I have made these two commands to get info:
Hi
Looks like you will need to boot from the Windows media and fix booting. Now have you tried booting from the BIOS boot menu? Your sure that the windows install was UEFI boot and not legacy?
Thank You I will try that option - and no - I am not sure that Windows were installed in UEFI mode - I was probably not even aware of the possible issues at installation time.
I tried booting from a Win10 media and found out that it was not able to boot or even install with the given partition.I then tried to reinstall windows on a wiped sdb drive - still without success. It kept claiming that the efi-system disk was of wrong format, even though I had carefully formatted it as the required FAT32.
So I thought that it could be that the presence of sda disk (with its partitions) was confusing the windows installer, so as a final resort I physically unplugged the sda disk.
I was then able to install Windows from scratch at the sdb disk.
After re-plugging the sda disk, grub perfectly finds the Win 10 system and I am calm and can continue scanning old slides - which is the only reason I have to keep Win 10.
Thanks for the help!
I have two boxes running 15.1 and 15.2 Plasma, both dual-booting with windows 10.
Every now and then grub loses the windows entry, AFAICS after an update.
The simplest way to fix this, for me, is to go into Yast>bootloader, check that “probe foreign OS” is checked (it always is), make a minor edit (like the boot menu timeout), and save changes. Then windows entry is back.
Linux & UEFI. Larger Windows updates sometimes make the boxes boot straight into it, losing the grub menu entirely. Fixing this is also simple: boot into openSUSE from UEFI and run Yast’s bootloader again.
Before I was commenting on the OP issue. Then you asked “After update of Windows or Linux?”, so I commented that it also happened sometimes after windows update, but that it kills grub entirely, booting straight to windows.