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<blockquote data-quote="Nethfel" data-source="post: 895691" data-attributes="member: 89124">Hi!Welcome to the forums!First thing to discuss is had drive sizes.&nbsp; HD manufacturers reports sizes based on actual amount of bytes, so if for a simple example, if a hard drive specified it stored 1K (for simplicities sake), it would store 1000 bytes.&nbsp; Software and computers relate the size of a drive based upon a power of 2, ie: 1024 bytes = 1K, so the software would say the drive is smaller then the box just because of a conversion factor.&nbsp; As a simple example - my hard drive is a &quot;250 Gig HD&quot; in my macbook.&nbsp; Disk Utilities shows me the total capacity in both raw bytes (250,059,350,016) and the equivalent Gigabytes (232.9)&nbsp; I've not lost anything, it's just a difference in representation.&nbsp; It'd be nice if the HD manufacturers followed base 2 convention since that is how computers display the size of drives - but they tend to like to make the HD look as big as possible, even if it isn't reported that big because of the conversion to base 2Now the other factors that take place:1) When you format a drive, some of it is lost in the formatting process to reserved space.&nbsp; The amount of reserved space is dependent on the filesystem used (since NTFS reserves space differently then Linux EXT or OSXs HFS+).2) What you see to add up is not necessarily all there is - especially if you're pulling those numbers from the finder.&nbsp; The finder hides a lot of system files that Apple has deemed as not to be touched areas so they don't show them to you. It doesn't sound like you're missing any real space.</blockquote>

[QUOTE="Nethfel, post: 895691, member: 89124"] Hi! Welcome to the forums! First thing to discuss is had drive sizes. HD manufacturers reports sizes based on actual amount of bytes, so if for a simple example, if a hard drive specified it stored 1K (for simplicities sake), it would store 1000 bytes. Software and computers relate the size of a drive based upon a power of 2, ie: 1024 bytes = 1K, so the software would say the drive is smaller then the box just because of a conversion factor. As a simple example - my hard drive is a "250 Gig HD" in my macbook. Disk Utilities shows me the total capacity in both raw bytes (250,059,350,016) and the equivalent Gigabytes (232.9) I've not lost anything, it's just a difference in representation. It'd be nice if the HD manufacturers followed base 2 convention since that is how computers display the size of drives - but they tend to like to make the HD look as big as possible, even if it isn't reported that big because of the conversion to base 2 Now the other factors that take place: 1) When you format a drive, some of it is lost in the formatting process to reserved space. The amount of reserved space is dependent on the filesystem used (since NTFS reserves space differently then Linux EXT or OSXs HFS+). 2) What you see to add up is not necessarily all there is - especially if you're pulling those numbers from the finder. The finder hides a lot of system files that Apple has deemed as not to be touched areas so they don't show them to you. It doesn't sound like you're missing any real space. [/QUOTE]

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