What have you tried: Turning off and on the PC multiple times
What is the error: I successfully downloaded Kali on external SSD and launched it at ease. I configured something i needed and then switched back to my windows in BIOS. About an hour later, when i plug my external SSD in, BIOS doesn’t see it and can’t launch kali like before (SSD is working, its light is on)
What device is this on: PC (Kali on external SSD)
Not fully fix: Boot installer using advanced options → recovery, mount disk and reinstall grub.
I have simmilar bug, but I with and without windows disk connected and internal ssd.
I’m about to give up installing Kali, but I have the same issues. I did Rufus iso and dd, then etcher, when downloading I have all the security booted off and Windows security off, and I am still having the same problem is writing on the disk (I did use the whole disk and partitions) and is working because I double check in Windows, and it is using my disk completely, and I cant use it on windows only see it. I did install Kali a long time ago with the same PC I have today; something is weird with something and no one has a solution for this. Keep updated if you find the solution.
After much troubleshooting, I finally got it to work on my desktop (Windows 11 Intel i7). I reset one of the disks to GPT using Rufus partition GPT (Partition on Rofus with a new USB as well) (USB Info 1 USB was super old Lexar USB 2USB that work with the install was 3.0) and downloaded Kali Linux via torrent (I didn’t try the 4GB installer). It worked for me, and it now appears in the BIOS. I can boot it on, and installing it takes a long time. It is not the same as the image that takes a few seconds.
Before doing ^ all that, I tried to remove all my disks and everything; when everything started working, like in the first paragraph that I said, I didn’t remove any disks or anything. The only different thing was the Kali. I did full torrent, not direct download, because after a lot of research, I found out Windows 11 red flags any Linux or Kali as a virus, so direct download for torrent and you get dangerous files, and it will work for dual boot
I performed a regular installation because attempting a full install would often crash. I followed the basic installation steps shown in most YouTube tutorials—just the essentials that everyone checks. I turned off BIOS security, and I didn’t encounter any issues like before.
I also tried installing it on an old Acer laptop (Windows 10) with an Intel i3 processor using the regular installer, and it worked perfectly on that super-old machine. (Setup boot security off)(Regular Kali installer NO TORRENT DOWNLOAD)
I hope this helps. Good Luck