LMDE4 + Win10 Dual-Boot: No Boot-Menu, No booting OS. pls help!

Questions about Grub, the liveCD and the installer
Forum rules
Before you post please read how to get help
Post Reply
illTill
Level 1
Level 1
Posts: 3
Joined: Tue Oct 06, 2020 9:17 am

LMDE4 + Win10 Dual-Boot: No Boot-Menu, No booting OS. pls help!

Post by illTill »

Hey,

I'm new in the world of Linux and eben tho it's not recommended for Newbies, I wanted to try the LMDE 4 Verion of Mint.
I installed it beside a Windows 10 Installation and the first thing I noticed, that I couldn't decide between Debbie and Win10. So it seemed like I did smth. wrong with the partition and/or the boot-loader. But F12 does the trick and as it started in Debbie, it was fine for me. So I set everything up and it worked fine for 2 days.
Today I wanted to start the Computer and nothing happens. Just black Screen and a blinking _ without any possibilitiy to get into the boot menu or to type in anything.
Still it's possible to start a OS via USB-Stick (I changed the primary Boot to USB, in case smth. would go wrong).
I could just reinstall everything and it may work, but it would be nicer to fix it and learn, where the problem is, what caused it and so on.
So please help me to understand and hopefully fix the problem.

here is the boot-protocol via Boot-repair of LMDE4 (sdb is the USB-drive):
============================= Boot Info Summary: ===============================

=> Grub2 (v1.99-2.00) is installed in the MBR of /dev/sda and looks at sector
341196296 of the same hard drive for core.img, but core.img can not be
found at this location.
=> Syslinux MBR (5.00 and higher) is installed in the MBR of /dev/sdb.

sda1: __________________________________________________________________________

File system: ntfs
Boot sector type: Windows 8/2012: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files:

sda2: __________________________________________________________________________

File system: vfat
Boot sector type: Windows 8/2012: FAT32
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /EFI/Boot/bootx64.efi /EFI/Microsoft/Boot/bootmgfw.efi
/EFI/Microsoft/Boot/bootmgr.efi
/EFI/Microsoft/Boot/memtest.efi

sda3: __________________________________________________________________________

File system:
Boot sector type: -
Boot sector info:
Mounting failed: mount: /mnt/BootInfo/sda3: unknown filesystem type ''.

sda4: __________________________________________________________________________

File system: ntfs
Boot sector type: Windows 8/2012: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /Windows/System32/winload.exe

sda5: __________________________________________________________________________

File system: ext4
Boot sector type: -
Boot sector info:
Operating System:
Boot files:

sda6: __________________________________________________________________________

File system: ext4
Boot sector type: Grub2 (v1.99-2.00)
Boot sector info: Grub2 (v2.00) is installed in the boot sector of sda6
and looks at sector 328431736 of the same hard drive
for core.img. core.img is at this location and looks
for (,gpt6)/boot/grub. It also embeds following
components:

modules
-------------------------------------------------------
fshelp ext2 part_gpt biosdisk
-------------------------------------------------------
Operating System: LMDE 4 (debbie)
Boot files: /boot/grub/grub.cfg /etc/fstab
/boot/grub/i386-pc/core.img

sda7: __________________________________________________________________________

File system: swap
Boot sector type: -
Boot sector info:

sdb1: __________________________________________________________________________

File system: vfat
Boot sector type: SYSLINUX 6.04
Boot sector info: Syslinux looks at sector 32784 of /dev/sdb1 for its
second stage. The integrity check of Syslinux failed.
No errors found in the Boot Parameter Block.
Operating System:
Boot files: /boot/grub/grub.cfg /syslinux.cfg
/EFI/boot/bootx64.efi /EFI/boot/grubx64.efi
/ldlinux.sys

============================ Drive/Partition Info: =============================

Drive: sda _____________________________________________________________________
Disk /dev/sda: 238.5 GiB, 256060514304 bytes, 500118192 sectors
Disk model: SAMSUNG MZ7TE256
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Partition Boot Start Sector End Sector # of Sectors Id System

/dev/sda1 1 500,118,191 500,118,191 ee GPT


GUID Partition Table detected.

Partition Attrs Start Sector End Sector # of Sectors System
/dev/sda1 R 2,048 1,085,439 1,083,392 Windows Recovery Environment (Windows)
/dev/sda2 1,085,440 1,290,239 204,800 EFI System partition
/dev/sda3 1,290,240 1,323,007 32,768 Microsoft Reserved Partition (Windows)
/dev/sda4 1,323,008 290,402,303 289,079,296 Data partition (Windows/Linux)
/dev/sda5 353,316,864 491,728,895 138,412,032 Data partition (Linux)
/dev/sda6 290,402,304 353,316,863 62,914,560 Data partition (Linux)
/dev/sda7 491,728,896 500,117,503 8,388,608 Swap partition (Linux)

Attributes: R=Required, N=No Block IO, B=Legacy BIOS Bootable, +=More bits set
User avatar
Pierre
Level 20
Level 20
Posts: 10945
Joined: Fri Sep 05, 2008 5:33 am
Location: Perth, AU.

Re: LMDE4 + Win10 Dual-Boot: No Boot-Menu, No booting OS. pls help!

Post by Pierre »

did you allow the win-10 system ... to install any 'updates' ?.

or, have you not used the win-10 system, in the last few days ?.
Image
Please edit your original post title to include [SOLVED] - when your problem is solved!
and DO LOOK at those Unanswered Topics - - you may be able to answer some!.
illTill
Level 1
Level 1
Posts: 3
Joined: Tue Oct 06, 2020 9:17 am

Re: LMDE4 + Win10 Dual-Boot: No Boot-Menu, No booting OS. pls help!

Post by illTill »

I'm pretty sure I did not boot into windows, except after installing LMDE to check if it still works, but can't say for sure as I'm using 2 different PCs parallel.
I think I didn't boot into windows yesterday at all, and only used Debbie, but as I said, not 100% sure, sry.

Edit:
I didn't allow Win10 to update anything, so if it did, it did without notifying me.
illTill
Level 1
Level 1
Posts: 3
Joined: Tue Oct 06, 2020 9:17 am

Re: LMDE4 + Win10 Dual-Boot: No Boot-Menu, No booting OS. pls help!

Post by illTill »

UPDATE:
I remembered, that I got a Timeshift Point/File from yesterday morning and used it to restore everything to yesterday mornings point.
Now the system started as usual.

So, Problem hopefully solved. Still I would like to know where the problem was.
So as Timeshift only restores in the Linux Part it was a failure in Debbie, correct?
I installed Gimp, Wine, set the Firewall to strict and tried to get 'Redshift to run, could there be the problem somehow?
I'm not sure if I maybe also opened something like the GRUB or Boot-Manager and changed the settings to some recommended things.

As a second question:
What exactly happens, when the computer is not booting or doing anything? Does it start int the wrong partition and there is no BIOS firmware of the Motherboard?
Normally you should be able to get into the BIOS, at least I always did until now, how is it possible that even that doesn't work?

Last but not Least:
Can you say, why there is no choice of LMDE and Win10, when I start the computer?
I guess GRUB is in the wrong partition, but I'm not sure and would like to know, where it should be.
(In case it's possible answer with the given informations)

Sry, if this is kind of offtopic or stupid, but I would really like to understand it.
Post Reply

Return to “Installation & Boot”