Cobra Forum

I have my primary hard drive with Ubuntu 22.04 /dev/sb. I have a second hard /de/sdb1 also installed as shown below

     Code:
Filesystem     1K-blocks      Used Available Use% Mounted on
tmpfs             390848     11904    378944   4% /run
/dev/sdb2      959863856 111352260 799683388  13% /
tmpfs            1954236     67268   1886968   4% /dev/shm
tmpfs               5120         4      5116   1% /run/lock
/dev/sdb1         523248      6612    516636   2% /boot/efi
tmpfs             390844       160    390684   1% /run/user/1000
How can I access the second drive and also return to main hard drive. Thx for help