Most operating systems only remove references to the file when they are asked to delete a file. When you delete a file using the default commands of the operating system (for example “rm” in UNIX or “del” in DOS or emptying the recycle bin in WINDOWS) the operating system does NOT delete the file, the contents of the file remains on your hard disk. If all goes well, you should be able to boot as normal.The secure removal of data is not as easy as you may think. If the installation media is still in the drive, select "Boot Existing OS" from the boot menu, and it should start the GRUB bootloader on your hard drive or SSD. Now we can run the grub-install command to reinstall the bootloader: grub- install /dev/sda1 If it doesn't, you can always use the mount-and-chroot method to get back to the GRUB configuration menu and try again. You can most likely go with it as it is just to see if it works. If you haven't changed anything, this will likely be as it was when you installed your Linux system. Look over the /boot/grub/nf to make sure it looks correct and edit it if necessary. Now we can make changes to the system as if we had booted it directly. Now chroot into the directory we created: arch-chroot /mnt/linux You can create a directory to mount it using mkdir with the -p option and then mount it: mkdir -p /mnt/linux In this case, the Linux system is on /dev/sda1.
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