Got a new laptop with one NVMe drive and one SSD drive and wanted to do the following:
Have one encrypted Ubuntu partition and one encrypted (with Bitlocker) windows-partition, both on the NVMe drive. Have one encrypted Kali Linux partition on the SSD.
I setup the Ubuntu partition and the Windows partition without problems and everything worked just fine. The only caveat is that on the few occasions that I have to boot into Windows I have to do so by changing boot order in the BIOS (because of the Bitlocker encryption I guess).
I used the computer like this for a couple of days and then I went ahead and installed Kali Linux on the separate SSD as one encrypted partition on the whole drive.
Everything worked fine, but I had to change boot order in the BIOS to boot into Kali as well (probably due to misconfiguration?), but as I had to do the same for windows (not due to misconfiguration?) I didn't see it as a problem.
Then all of a sudden I couldn't access BIOS anymore! It's an Acer laptop and I thought it had something to do with BIOS itself. If I just started the system it launched grub and I could boot into Ubuntu normally and all, but whenever I tried to enter BIOS on launch the computer froze on the Acer splash screen and nothing happened. I couldn't get it to work but then all of a sudden BIOS launched normally but the Kali partition was gone from the boot order menu.
I'm thinking "Well I'll just reinstall it and see" but when I try to boot into the other partitions they have stopped working as well. The Windows partition won't boot at all, and when I try to boot into Ubuntu it says something like "cryptsetup waiting on encrypted device" and stays there.
What am I doing wrong? I'm almost certain that I have to do a complete reinstall of all partitions, but I don't want this to happen again! What crucial part of this setup am I missing?
I've tried to find answers to this problem on the web of course, but I can't (I think at least) find something with this setup and these kinds of problems. I don't know whether it's a case of some misconfiguration in BIOS or with the encryption (entries in crypttab) or maybe with one of the drives.
It turns out that BIOS had somehow reverted to a state in which RST had been enabled instead of AHCI, which caused these problems to occur. I just enabled AHCI again and now everything works to some degree. What I mean by that is that Kali can no longer boot without secure boot being disabled. So the question is whether this was the cause initially or if I just have to keep Secure Boot disabled.
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