If you get an “error: unknown filesystem” this is not your Ubuntu partition. If this is the Ubuntu partition, you will see the Ubuntu folders, including lost+found/, home/, boot/ and vmlinuz and initrd.img. Use this address as the first part of the next command. ls (hdX,Y)/boot/grub – should display several dozen *.mod files.
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Run ls to see the available section names. hp
Run (partition name) to see if anyone has the boot file.
Run to set root=(partition name).
Run prefix=(prepared partition name)/boot/grub.
Run insmod normally.
Works fine.
The media section containing the operating system installation.
Link /dev , /dev/pts , . . /proc and /sys in the same directories of the /mnt folder.
Install GRUB.Le
Unmount the directories after the build completes successfully.
Just “set dog breed prefix = (hd0, msdos6)/PathToGrubFiles”, “insmod normal”, then “normal”. It will be different for every PC. For example, you might have the option “set prefix=(hd0,msdos6)/grub2/ [enter] insmod traditional [enter] normal [enter]” or “set prefix=(hd1,msdos6)/boot/grub/” . .
Insert 10 CDs or DVDs into the SLES/SLED drive and also boot from the CD or DVD.
Enter the command -l” “fdisk.
Enter the command “mount /mnt” /dev/sda2.
Enter the command –root-directory=/mnt “grub-install /dev/sda”.
Once this command is completed, your system will be processed successfully by entering the “reboot” command.
Cause “Grub Rescue Surprise File System”. The reason for all these errors may be that you implemented an abnormal deletion of a partition that has a second or duplicate operating system. For example, it could be a PC that dual-boots Windows and Linux. However, you deleted someone’s Linux partition.
If you’re still getting errors: unwanted file system, go back to step 9 of grub settings if grub rescue is brought to front > partition render time is correct, then enter realistic.
Your PC needs this information to boot your Linux distribution successfully. When grub is corrupted, one such error that you may encounter is “Error: no grub rescue available for such partition”.
Welcome to GRUB! error: unknown file system Entering recovery warning If you get a crash, it usually means that GRUB2 failed to load a “normal” module. Live CDs are good, sometimes we just need a canned case.
First migration to Ubuntu from an ISO image
What if the grub rescue filesystem is unknown or not?
What if the Grub-Rescue file system is not exactly known?
What to do if grub hideout filesystem is unknown
There is another reason for this problem. In this particular case, GRUB got corrupted somehow and needed to be repaired or reinstalled. However, as stated by Grub, recovery is not possible with “Boot Repair” with an emergency “unknown file system”. It is also possible that many of the root partitions where GRUB is installed are corrupted. To solve this problem:
What to do if the device of the Grub backup file is unknown?
Start by booting from Ubuntu into an ISO image.
What if the Grub Rescue file system may remain unknown?
What to do if the solution for the Grub recovery file is unknown?
What to do with Grub if the fallback send system is unknown?
There is another reason for this problem. In this particular process, GRUB has somehow been corrupted and needs to be repaired or reinstalled. However, as noted in the Grub Rescue crash using “Boot Repair” with an unknown file system issue, it’s also possible that the root partition where GRUB is installed is corrupted. To solve this problem:
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What’s the point of digging if the history of the recovery folder is unknown?
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