mount: /mnt: unknown filesystem type 'ext4'

I am trying to install Arch Linux on VirtualBox, however, when I am trying to mount the filesystems I get an error: 'unknown filesystem type ext4'.

I know there is a lot of people ran into the same problem and there's plenty of information available on the net but I can't seem to find a solution.

the output of fdisk -l:

Root@archiso ~ fdisk –l Disk /dev/sda: 64GiB, 68719476736 bytes, 134217728 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x17c5711e Device Boot Start End Sectors Size Id Type /dev/sda1 * 2048 411647 409600 200M 83 Linux /dev/sda2 411648 8603647 8192000 3.9G 82 Linux swap / Solaris /dev/sda3 8603648 134217727 125614080 59.9.G 83 Linux Disk /dev/loop0: 403 MiB, 422539264 bytes, 825272 sectors 

The error I get when I run mount /dev/sda3 /mnt:

mount: /mnt: unknown filesystem type 'ext4'. 

By the way, how can I copy the contents of a command from VirtualBox Arch installer? I copied it the hard way! the mouse is invisible inside the ZSH and I can't use redirection > in order to save the contents as no filesystem is mounted.

Thanks.

1 Answer

Encountered the same problem with Arch guest on Virtualbox, solved by booting into live media, chrooting again into installed system:

# mount /dev/sda2 /mnt # mount /dev/sda1 /mnt/boot # arch-chroot /mnt 

and reinstalling the kernel:

# pacman -S linux 

Not sure why ext4 module gets removed, though.