Hello all, Apologies if this is a stupid question but upon booting up my air for the first time it appears that I only have about 99 gigabytes of the 128 SSD free to use... I know the OS and pre installed apps use up a bit but didn't think it'd be that much? Just to give a picture, the system report shows the SSD capacity as being 121.33 GB. Is this less than 128 GB due to formatting? Of the 121.33 GB, the Macintosh HD is 120.47 GB. Then looking in the storage box on 'about this mac' the following is used out of the 120.47 GB: Apps:- 5.32 GB Other:- 15.3 GB What is 'other'? Is this the OS? I thought the OS would be about 5-10 GB max? Any help would be much appreciated!