Score:1

Dual boot, shared SSD - change to dual boot, separate ssd

cy flag

I use a dual boot system Ubuntu/Windows. Windows for gaming only, Ubuntu for serious work. The OS's share one SSD: Ubuntu on /dev/sda5, Ext4 partition and Windows on /dev/sda4, ntsf partition. In addition one separate SSD /dev/nvme0n1p1, ntsf, shared, to shuffle files and images between the two OS's (but mostly used for storing large windows game files). This setup has been running merrily for quite a while. After Win 11 upgrade there has risen a need for a separate windows drive, certain games won't run from shared drive. There lies my question: If I delete partition /dev/sda4, re-format to ext4. Shut down the computer, Install a new SSD and re-install windows on the new drive - Will the Grub boot loader recognise the new drive after reboot or just boot straight into Ubuntu? The uefi/boot CSM is disabled, secure boot is set to other OS and boot option 1 is set to Ubuntu on "old" SSD. I would love to have the same boot loader option as before, with Ubuntu as priority and Windows as second option when all is done.

lucki1000 avatar
us flag
Did you install/upgrade Windows 11 without activating secureboot? Grub don't detect the new Windows 11 installation you have to run `grub-update` or if it isn't avail `sudo grub-mkconfig -o /boot/grub/grub.cfg` expect your Uefi starts only windows then you have to live boot and chroot to your Ubuntu partition and install grub again
oldfred avatar
cn flag
Even if sda is a SSD, your NVMe drive is faster. Often better to have operating system you use most or need speed for games on NVMe drive. Grub will dual boot Windows on separate drive if bitlocker & fast start up are off. Note that Windows updates may turn fast start up back on. I prefer to have each install on separate drives, normally if drives are about same speed. If using both a lot, then both installs on fastest drive & some or most of data on slower drive as accessed less. Configuration will depend on your use pattern.
svantevarg avatar
cy flag
Thank you for clarifying some of these points I have not thought of. I have not done any corrective measures yet, waiting for some hardware to arrive pr. mail later in the week. Will post when I have result, until then I'll hack it :)
karel avatar
sa flag
Does this answer your question? [How can I install Windows after I've installed Ubuntu?](https://askubuntu.com/questions/6317/how-can-i-install-windows-after-ive-installed-ubuntu)
svantevarg avatar
cy flag
I am grateful for all the help, hints and links I get here and I will use the wisdom shared. The problem now is that I live in such a remote area I am dependent on mail service for hardware delivery and the dispatch has been slow, I am still waiting. I want to have everything in place before I start and will report back as soon I have finished upgrading with full report on proceeds.
svantevarg avatar
cy flag
OK guys. By following good advice and instructions I have succeeded in re-building hardware and software configuration on my computer. The OS's now each resides on their separate NVMe SSD and grub works perfect. Windows gave the most headache. Not booting but I had to go into Ubuntu to download drivers and stuff to get windows to get-go. Ubuntu just took everything in stride and reliable as ever. Everything up and running, just have to do some hacking to ease everything into groove and all is hunky dory :). Thank You everyone for taking interest, bless you all!
A Rogue Ant. avatar
in flag
That's great. We'd like it if you were to write up what you did as an answer so that future searchers looking for a solution to the same issues might find it. (Comments are like mayflies, they don't last around here.)
I sit in a Tesla and translated this thread with Ai:

mangohost

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.