thanks for your help with this.
I have a device /dev/sdb which has 1T of space. This space has been allocated to the first partition /dev/sdb1. It has an ext4 filesys and it is mount. This device /dev/sdb, has been increased to 1.5T. How do I grow /dev/sdb1 to 1.5T without loosing data?
Thank you all always.