Errors on Booting computer into EndeavourOS


First of all some details about my computer, via the inxi -F command

Host: zed-20bxcto1ww Kernel: 5.8.10-arch1-1 x86_64 bits: 64
Desktop: MATE 1.24.1 Distro: EndeavourOS
Type: Laptop System: LENOVO product: 20BXCTO1WW v: ThinkPad T450s
serial: <superuser/root required>
Mobo: LENOVO model: 20BXCTO1WW v: SDK0E50510 WIN
serial: <superuser/root required> UEFI [Legacy]: LENOVO
v: JBET41WW (1.06 ) date: 12/23/2014
ID-1: BAT0 charge: 18.9 Wh condition: 19.2/23.2 Wh (83%)
ID-2: BAT1 charge: 28.2 Wh condition: 28.3/47.5 Wh (60%)
Info: Dual Core model: Intel Core i5-5300U bits: 64 type: MT MCP
L2 cache: 3072 KiB
Speed: 799 MHz min/max: 500/2900 MHz Core speeds (MHz): 1: 798 2: 798
3: 799 4: 798
Device-1: Intel HD Graphics 5500 driver: i915 v: kernel
Device-2: Lite-On Integrated Camera type: USB driver: uvcvideo
Display: x11 server: X.Org 1.20.9 driver: intel
unloaded: fbdev,modesetting,vesa resolution: 1920x1080~60Hz
Message: Unable to show advanced data. Required tool glxinfo missing.
Device-1: Intel Broadwell-U Audio driver: snd_hda_intel
Device-2: Intel Wildcat Point-LP High Definition Audio
driver: snd_hda_intel
Device-3: Logitech Webcam C200 type: USB driver: snd-usb-audio,uvcvideo
Sound Server: ALSA v: k5.8.10-arch1-1
Device-1: Intel Ethernet I218-LM driver: e1000e
IF: enp0s25 state: up speed: 1000 Mbps duplex: full mac: 68:f7:28:63:6a:a7
Device-2: Intel Wireless 7265 driver: iwlwifi
IF: wlan0 state: down mac: 52:6f:0e:d9:66:5c
Local Storage: total: 1.82 TiB used: 497.91 GiB (26.8%)
ID-1: /dev/sda vendor: Micron model: MTFDDAK256MAM-1K1 size: 238.47 GiB
ID-2: /dev/sdb type: USB vendor: JMicron Tech model: Generic
size: 465.76 GiB
ID-3: /dev/sdc type: USB vendor: JMicron Tech model: N/A size: 223.57 GiB
ID-4: /dev/sdd type: USB vendor: Samsung model: ST31000528AS
size: 931.51 GiB
ID-1: / size: 47.81 GiB used: 10.90 GiB (22.8%) fs: ext4 dev: /dev/sda6
Alert: No Swap data was found.
System Temperatures: cpu: 43.5 C mobo: 0.0 C
Fan Speeds (RPM): cpu: 0

When booting I get the following message:

[ 05592001 ] — [ end Kernekl panic - no syncing: VPS: unable to mount root fs on unknown-block (0,0) ] —

To get out of this screen, I have to do a hard shutdown and then choose EndeavourOS Advanced mode. Booting is then successful and everything works as expected.

During the initial installation, a message was presented that EndeavourOS preferred UEFI boot. As my other operating systems are Legacy Boot, I proceeded with the installation of Endeavour and did not, therefore, create the EFI boot partition. Would this cause the problem I am having?

As my other operating systems, both LinuxMint are on Legacy boot, is it possible to convert to boot in EFI mode for the three operating systems, without re-installation?

First issue you are having: try running sudo mkinitcpio -P then sudo grub-mkconfig -o /boot/grub/grub.cfg or sudo update-grub

Second issue: Are you currently booted into Efi mode or Legacy mode? Is your disk GPT or MBR?

you have boot USB iso installer in UEFI [Legacy] , Legacy , this is NOT EFI
you have to check all options in bios

  • disable secureboot
  • disable fastboot
  • disable CSM
  • disable Legacy
  • disks on AHCI

for linux disk formatted in GPT , and for EFI you will need /boot/efi 33Mo ( minima for linux only )
and redo your install

you should before returns

inxi -Mza
sudo parted -l
sudo efibootmgr -v
test -d /sys/firmware/efi && echo efi || echo bios
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