Currently Being ModeratedNov 13, 2011 10:37 AM (in response to nikserega)
You are dealing with an arithmetic issue. The 128 GB drive has 128,000,000,000 bytes which is a Base10 measure. The computer reports size using Base2 arithmetic. If you divide by 1024^3 (or as a rule of thumb multiply by .93) you will come close to that 121 GB number. So what you have is perfectly normal.
Currently Being ModeratedNov 13, 2011 10:47 AM (in response to Kappy)
Thanks, Kappy! But for me it is a little bit strange, because not long ago I have bought a 256GB SSD HDD for my MacBook Pro 13" and MacOS X shows 256 GB...
Currently Being ModeratedNov 13, 2011 10:57 AM (in response to nikserega)
If you are seeing that then there are probable reasons:
1. You aren't using the same application to display the information. Not all utilities are reporting drive data using Base10 conversion.
2. You are using a different version of OS X in each case. Lion is pretty consistent, though not completely. Snow Leopard on the other hand is much less consistent because the move from reporting drive data in Base2 to Base10 started in Snow Leopard.
3. The SSD actually has 256 GBs (1024^3 GB).
Currently Being ModeratedNov 13, 2011 1:22 PM (in response to Kappy)
Thank you, Kappy! I have found an article about capacity of SSD for MacBook Air and MacBook Pro: http://support.apple.com/kb/HT3127?viewlocale=en_US
But I am not agree with Apple. If you(Apple) know a real capacity of SSD - you have to write it in your specification. Do not lie to your customers...
Currently Being ModeratedNov 13, 2011 2:01 PM (in response to nikserega)
That is the real capacity. If you understand the meaning of "Base 2" and "Base 10" you'll understand they didn't lie. Especially considering this has been the standard in the computing community for more than 30 years.
Currently Being ModeratedNov 13, 2011 2:14 PM (in response to nikserega)
Currently Being ModeratedOct 14, 2012 8:36 AM (in response to Kappy)
Currently Being ModeratedOct 14, 2012 9:27 AM (in response to shamalk)
Multiply the figure shown in DU by 1.07 and that will be close to 128,000,000,000 figure.
You posted to a year old topic that is no longer active. You should have posted a new topic. Had I marked this topic as inactive for me I never would have received a notification.
Currently Being ModeratedOct 16, 2012 6:33 AM (in response to Kappy)
Thanks for the reply. Kappy