Windows Recovery Drives
Windows 10 includes a tool that can be used to create a recovery drive from the installed system ( https://support.microsoft.com/ en-us/help/4026852). After booting into Windows, type recovery drive into the search box to locate the tool and then launch it. You need to supply a fresh 16GB USB drive (or one you’re happy to recycle – because all existing data will be overwritten) and ensure you select the option to backup system files when prompted because this option makes it possible to use the recovery drive to reinstall Windows.
Lenovo also offer a Digital Download Recovery Service ( https:// support.lenovo.com/gb/en/solutions/ht103653) (DDRS) that you can use to download the files needed to create a Lenovo Recovery USB key. It, like the Windows recovery drive, also requires a 16GB USB drive, but downloads everything it needs from Lenovo. You can use the USB key to reinstall Windows and other Lenovo-installed files.
Should you so wish, you can use Linux to make a recovery image to keep on your file server and free up the USB stick. An easy way to do this is with cat and gzip: $cat/dev/sdX|g zip> recovery_ drive.img.gz
Or use ssh to pipe it directly to a file server: $c at/ dev/sdX|gzip|ssh user@ server‘ cat> recovery_ drive.img.gz’ We observed that the size of the Windows recovery drive is 14.45GB, reduced by compression to 14.02GB, saving 439MB. The 170 files downloaded by the Lenovo DDRS total 12GB.