You will be presented with the Grub-Rescue command prompt.
Run ls under the section names for sale.
Run ls (partition name) to get the salary if there is a boot file.
Run set root=(partition name). .
Run .set .prefix=(partition .name)/boot/grub ..
Run insmod normally.
run okay.
Just type “set prefix insmod=(hd0,msdos6)/PathToGrubFiles”, normal” then you should type “normal”. Again, this will be different for each computer. For example, someone might type Prefix=(hd0,msdos6)/grub2/ “set [enter] normal insmod [enter] current [enter]” or “set prefix=(hd1,msdos6)/boot/grub/”. “.
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The reason why grub saves an unknown filesystem. The reason for this error might be that you used to abnormally delete all partitions that have a secondary/dual operating system installed. For example, it could be a PC that dual-boots Windows and Linux. However, you have deleted the Linux partition.
If you’re getting “Error: Unknown file system” it’s not your Ubuntu partition. If this is an Ubuntu partition, you will see the Ubuntu folders including Lost+Found/, Home/, Boot/ as well as vmlinuz and initrd.img. Usually use this email address as the first part of the next command. ls (hdX,Y)/boot/grub – should contain several dozen *.mod files.
What if the grub recovery file system is really unknown?
Start by booting Ubuntu from an ISO image.
What if grub try filesystem is unknown?
What if the Grub Rescue Report system is unknown?
Often this problem has an alternative cause. In this particular case, GRUB was somehow corrupted and needed to be installed or reinstalled permanently. However, as has been shown, if a Grub repair using “Boot Repair” fails with an “unknown file system” error, it is also possible that the key partition where GRUB is configured is corrupted. To solve this problem:
What to do if the Grub-Rescue system file is unknown?
What if the Grub-Rescue system file is simply unknown?
Start by booting Ubuntu from an ISO image.
What if grub recovery file configuration is unknown?
What to do if the Grub recovery file system is unknown?
There is a good reason for this problem. In this particular case, GRUB was partially corrupted and needed to be repaired or reinstalled. However, as we will see, if the grub repair with “Boot Repair” fails with an “unknown system” error file, it’s all too likely that the actual partition where GRUB is installed is probably corrupted. To solve this problem:
What if the Grub-Rescue filesystem is unknown?
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