Ubuntu SSD not recognized by BIOS after installing Windows 10

Lunar Cultist

12/27/23, 12:28 PM

my problem is the following:

I can't boot my ubuntu SSD anymore because there is no option for it in the BIOS or boot menu.

I'm having two SSDs in my PC. On one I firstly installed Windows, on the second one Ubuntu. The ubuntu SSD is a 2,5" Samsung SSD connected via SATA. Both Windows SSDs are a Kingston M.2 NVMe SSD (the old one) and a Samsung M.2 NVMe SSD (the new one).

Due to less memory I bought a new SSD for my Windows system, exchanged it with the windows SSD, which was too small, and installed windows 10 on this new SSD. The other one - containing ubuntu - was not touched.

To boot each of the two OSs in the past, I just took my choice in the boot menu. I choose the Windows or Ubuntu hard drive to boot.

But now the Ubuntu SSD is not recognized anymore. Only the new Windows SSD. In the partitioning tool in windows, I saw the the partitions on the ubuntu SSD are quite fine. I even inserted the old SSD and got into the boot menu. As always: Both SSD and OSs are shown and I could choose one.

But as soon as I exchange the old too small Windows SSD with the new one, I just see the Windows SSD and OS in the BIOS.

What's the problem and how to solve it?

187

0 + 2

boot

ssd

dual-boot

bios

windows-10

Joepie Es

12/27/23, 2:26 PM

Disable 'Secure Boot' in the UEFI (incorrectly also called BIOS ). I guess you had to enable it to install Windows.

oldfred

12/27/23, 3:47 PM

Check motherboard manual. Most disable a SATA port if using M.2 ports.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Ubuntu SSD not recognized by BIOS after installing Windows 10

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.