Installation on second HDD "filesystem unknown"

[drakenator]

I've been trying to install Magiea 5.1 on my new PC for a few days now. It has Windows 10 on the main solid-state drive, so I cleared 200 GB of space on the regular data drive with MiniTool Partition Wizard.

The first installation seemed to go okay until just after automatic partitioning when "failed to mount win_c" or some such appeared, it turned out I needed to disable fastboot. So I disable that, blanked the 200 GB again (to do a fresh install). This time the installation went well up until the "remove disk and restart" part. It booted to the graphical loader, I selected normal Mageia, and it failed to boot, saying:

root (hd0,0)
Filesystem type unknown, partition type 0x83
chainloader +1

I tried restarting and selecting Windows this time, but it said "An operating system wasn't found."

I've installed Linux many times since the 90s, but I'm no expert. I can manage some basic command line stuff (move around directories and whatnot), and I've googled for my problem, even on this forum, but I'm not sure how to make what I find apply to my situation.

Also, the installation didn't seem to change the Windows bootloader on the solid state drive (although the graphical linux bootloader is also there). Both are present as options when I go into the BIOS (and it says "BIOS version: " in there so I think it's a BIOS and not a UEFI? I only just heard of the difference today). So I am able to boot back into Windows. But I want to dual-boot. Thanks for your help.

[gohlip]

This may not be the reason in your case, but there are several unknowns here we don't know about.
First check if your present setup (before installation) is
o uefi or bios-legacy
o disk is msdos or gpt

We here in Mageia don't know much about windows, but google it up and find from windows websites how to check above.
We can check msdos/gpt from lsblk-f, parted -l, gparted,etc, but whether windows is booted in uefi or bios-legacy, we don't know (and don't assume because it is gpt, it is uefi).

Follow the same setup when installing Mageia. Meaning, if windows is gpt/uefi, install in gpt/uefi; if msdos/bios-legacy, install in msdos/bios-legacy.
Make sure you have the correct screen as shown here whether you boot up install media in the correct boot (uefi or bios-legacy)
https://doc.mageia.org/installer/5/en/c ... aller.html

Of course, as you are already aware, disable fast boot and secure boot.

If uefi installation make sure (besides /) you also select the $esp (the fat32 partition) as mount point for /boot/efi (not /boot)
And do not format that $esp - otherwise windows will not boot up and needs to reinstall windows boot and redo mageia bootloader.

Good luck.

[Lebarhon]

Hello,
Windows can give you all the information you need
https://wiki.mageia.org/en/Mageia_in_du ... 8_and_over