When I used Time Machine to back up my info before upgrading, I didn't have enough memory room on my external hard drive. It said I needed 108 GB storage available.
Do you think I will need to purchased a larger storage device?
MacBook Air 13″, macOS 10.13
Probably. If Time Machine says it needs more space, then it needs more space.
You can completely erase the backup disk and start a new backup, but unless you have an additional TM backup disk you would be without any backup... which isn't a good idea.
Is there anything else on that external hard disk drive that is not related to Time Machine, which can be erased?
Probably. If Time Machine says it needs more space, then it needs more space.
You can completely erase the backup disk and start a new backup, but unless you have an additional TM backup disk you would be without any backup... which isn't a good idea.
Is there anything else on that external hard disk drive that is not related to Time Machine, which can be erased?
Time Line ... lots of memory required for upgrade in OS.
