How to delete entire time machine backup from external
I have an external hard drive that i run a back up for my macbook but i need to run a temporary backup of an imac whilst i upgrade the internal hard drive. Now i dont have a second hard drive and want to delete the entire time machine backup of the macbook off the external to make space so that i can do the temporary back of the imac and then after restoring the imac, delete the time machine backup of the imac and redo the backup of the macbook.
Confusing i know, but does anyone know the proper process of deleting the backup because i have done the whole move to trash and due the security on the encrypted files, caused a major problem on my external, causing me to have to run first aid and restoring of my external.
Thanks in advance.
MacBook