Trying to partition a 2TB flashrive to use Time Machine on but having failures

i have tried watching online tutorials on how use usb flashdrive use backup , or storage space macbook pro. getting following error after have erased , formatted mac os extended (journaled)

running operation 1 of 1: add “backup” splitting “untitled”…
verifying disk
verifying file system.
volume not unmounted.
using live mode.
performing fsck_hfs -fn -l -x /dev/rdisk2s2
performing live verification.
checking journaled hfs plus volume.
checking extents overflow file.
checking catalog file.
checking multi-linked files.
checking catalog hierarchy.
checking extended attributes file.
checking volume bitmap.
checking volume information.
volume header needs minor repair
volume untitled found corrupt , needs repaired.
file system check exit code 8.
restoring original state found mounted.
couldn’t modify partition map because file system verification failed. please verify , repair each volume individually , try again.
operation failed…


have tried use first aid repair , this:
repairing file system.
volume unmounted.
performing fsck_hfs -fy -x /dev/rdisk2s2
checking journaled hfs plus volume.
checking extents overflow file.
checking catalog file.
checking multi-linked files.
checking catalog hierarchy.
checking extended attributes file.
checking volume bitmap.
checking volume information.
volume header needs minor repair
repairing volume.
rechecking volume.
checking journaled hfs plus volume.
checking extents overflow file.
checking catalog file.
checking multi-linked files.
checking catalog hierarchy.
checking extended attributes file.
checking volume bitmap.
checking volume information.
volume untitled repaired successfully.
file system check exit code 0.
restoring original state found mounted.
operation successful.

has turned cycle of these 2

 

following. getting g ready try same thing.

 

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