Macbook M1 2020
I adopted the steps given on this video
https://www.youtube.com/watch?v=nMnWTq2H-N0&t=146s
At time stamp 2:05, he offers the next command:
diskutil eraseVolume JHES+ drive /dev/disk0s4
for me it didn’t work and the error stated:
JHES+ doesn’t look like a sound file system format
Though Mr. Macintosh within the video particularly stated to make use of observe this step earlier than deleting the partition in disk utility however I went forward and did the disk utility bit anyway and now I’m caught with nearly 65.5 Gb partition which I cant delete as a result of the “-” button is greyed out.
After going again to the video and additional analysis I attempted the next command
diskutil eraseVolume HFS+ drive /dev/disk0s6
and it labored with out errors
Nevertheless the the disk utility nonetheless wont erase the partition.
Can anybody please assist me.
Thanks a lot!
PS: Attaching a screenshot my 
terminal
