Update README.md

README.md

@@ -48,7 +48,7 @@ You can download a prebuilt bootable disk image that includes everything (includ
 Be mindful, however, that the unzipped disk image is likely to be big (3+ GiB in size). You can use this image to run LaylaOS under [Bochs](https://bochs.sourceforge.io/) or [QEmu](https://www.qemu.org/).
 
 If you want to try LaylaOS under [Oracle VM VirtualBox](https://www.virtualbox.org/), you will need to convert the bootable disk image into a VDI image. This can be done by running:
-`VBoxManage convertfromraw test_ext2.img test_ext2.vdi`
+`VBoxManage convertfromraw bootable_disk.img bootable_disk.vdi`
 
 You can then create a new virtual machine under VirtualBox using the disk image. You will probably face a problem as the image contains two files (`/boot/grub/grub.cfg` and `/etc/fstab`) with a hardcoded boot device name (something like `/dev/hda4`). To be able to use this disk as a SATA (or AHCI) disk under VirtualBox you need to either:
 * Edit these two files in the disk image you downloaded and change the device name to `/dev/sda4` (assuming you connect the disk at SATA port 0; the image contains 4 partitions)