I have a 2 tb harddrive that I'm trying to use to create a backup for my macbook air. Formatted it to exFAT on my PC, when plugging into my mac it still showed as NTFS. Reformmated to FAT using the macbook and the volume of the drive shows up as only 100 mb
How do I fix this to use the full capacity of the drive??????
MacBook Air (13-inch Mid 2013), iOS 7.1.1
If your intent is to use it as a Time Machine drive, then it must be formatted Mac OS Extended.
Time Machine uses functionality that FAT file system doesn't even have.
Why in the world would you even want to use that archaic file system any way?
If you haven't done so already, copy/paste this command into Terminal
defaults write com.apple.DiskUtility DUDebugMenuEnabled 1
Then in the Disk Utility Debug menu, select "Show every partition"
I would check the disk for primary partitions and delete them. Then format the whole disk as Mac OS Extended (Journaled). It may be that the 100Mb one is a normally hidden EFI partition, which you should not interfer with.
I also erase any propriatry software from the disk manufacturer, which causes more trouble than it is worth.
But since there have been problems with data loss on some Western Digital disks, check your's isn't one of them. There was a long thread on the subject on ASC.
2tb harddrive shows up as only 100 mb capacity on OSX
