iPod flash memory capacity
Ask iLounge offers readers the opportunity to get answers to their iPod-, iPhone-, iPad-, iTunes-, or Apple TV-related questions from a member of the iLounge editorial team. We'll answer several questions here each week, and of course, you can always get help with more immediate concerns from the iLounge Discussion Forums. Submit your questions for consideration using our Ask iLounge Submit Form. We reserve the right to edit questions for grammar, spelling, and length.
Q: I am thinking about upgrading to a flash based iPod (like the iPod touch), and I am wondering if the real storage capacity is closer to the 8, 16 or 32 GB claimed. My 5G 30GB iPod only has an actual storage capacity of 27.84GB after software.
A: In reality, the listed versus actual storage capacities for all iPod models have very little to do with installed software and more to do with differences in how storage units are calculated and advertised by hardware vendors versus how they are reported by software.
To a hardware manufacturer, one Gigabyte is equal to 1,000,000,000 bytes, whereas software being binary in nature uses a base-2 system where one Gigabyte is actually 1,073,741,824 bytes.
This is the main reason your computer only reports a storage capacity of 27.84GB for your 30GB iPod. Your 30GB iPod has a capacity of 30,000,000,000 bytes, which divided by 1,073,741,824 equals approximately 27.93. The remaining small difference (0.09 GB or about 90 MB) is attributable to the iPod operating system and software files itself.
Note that this is no different from your computer hard drive. A 160GB hard drive in your computer will only have a “real” capacity of around 149GB as far as your computer’s operating system software is concerned.
This does not change with flash memory chips. A 32 GB iPod touch is going to have a capacity of 32,000,000,000 bytes, which your computer will report as approximately 29.8 GB. The iPod touch operating system and support files are actually larger than the traditional iPod models due and will take up about another 300 MB, leaving you with around 29.5 GB of actual usable space as far as your computer is concerned.
- Will removing a credit card from Safari also remove it from Apple Pay?
- Can I mute Handoff calls coming into my Mac from my iPhone?
- How do I keep my iPhone calls from ringing on my Mac?
- Why doesn’t Traffic show up on my Today Notifications Screen?
- Why doesn’t my iPhone reconnect to Wi-Fi after I turn it on?
- Why can’t I see the iPad-style landscape view on my iPhone 6 Plus?
- ConnectSense Smart Outlet adds power monitoring, reduces price
- Automatic releases new Automatic Lite version of car monitoring accessory
- Apple releases fourth tvOS 10.0.1 beta
- iOS dev finds unimplemented one-handed keyboard in iOS code
- Apple sends out press invites for ‘Hello Again’ Oct. 27 Mac event
- Apple releases fifth beta of iOS 10.1 to developers
- Apple partners with builders to include HomeKit-enabled devices in new homes
- Report about Apple Pay in Japan hints at Oct. 25 release for iOS 10.1
- Apple Pay adds 20+ new U.S. banks and credit unions, MBNA Canada coming ‘mid-2017’
- Misfit launches Phase smartwatch
- Incase Icon, Pop, and Textured Snap for iPhone 7/7 Plus
- Philips Hue Motion Sensor
- Bowers & Wilkins P9 Signature Headphones
- Tech Armor FlexProtect and Shock Flex for iPhone 7/7 Plus
- SwitchEasy Flash and Fleur for iPhone 7/7 Plus
- Blue Microphones Raspberry Mobile Microphone
- Incipio Haven for iPhone 7 and Reprieve Sport for iPhone 7 Plus
- Mophie Hold Force Magnetic Case System for iPhone 7
- Speck Presidio and Tech21 Evo Tactical for iPhone 7
- Belkin Lightning Audio + Charge Rockstar
- Instant Expert: Secrets & Features of watchOS 3
- Instant Expert: Secrets & Features of tvOS 10
- Instant Expert: Secrets & Features of iOS 10
- Inside the betas: iOS 10 Photos gets Advanced Computer Vision
- Inside the betas: iOS 10 Music app delivers ‘clarity and simplicity’
- Inside the betas: iOS 10 Maps gets a major redesign
- Inside the betas: iOS 10 shakes up the user experience
- Inside the betas: watchOS 3 promises a real speed boost
- Inside the betas: A sneak peek at what’s new in tvOS 10
- Filling the Gap: A look at third-party HomeKit apps