I would like to merge /dev/sda1 and /dev/sdb1.root@server-1:/# df -hFilesystem      Size  Used Avail Use% Mounted on/dev/sda1        40G   13G   25G  35% /udev             10M     0   10M   0% /devtmpfs           1.6G  8.5M  1.6G   1% /runtmpfs           3.9G     0  3.9G   0% /dev/shmtmpfs           5.0M     0  5.0M   0% /run/locktmpfs           3.9G     0  3.9G   0% /sys/fs/cgrouptmpfs           782M     0  782M   0% /run/user/1000/dev/sdb1        99G   60M   94G   1% /mnt/diskI want to mount them on the / The problem that i've datas on / (13G), i don't want to lost it.Thanks
Merge /dev/sda1 and /dev/sdb1 to /
linux;debian