Change Serial Number Mac Os X

Check the serial number in about us in VM. If it is not there or it is 0. Then below solution will definitely fix your problem.VirtualBox does not by default make a serial number available to OS X guests. Of course OS X runs just fine inside VirtualBox running on a Mac even in that case. But due to the serial number being “0” the App Store and Server applications will not work.The solution is to determine the serial number of the real Mac by opening About This Mac or running System Information. It is an alphanumeric string.
On my Mac Pro 5,1 it begins with a letter and is 11 characters long.In Terminal run the following command substituting the name of your VirtualBox virtual machine and your serial number (all one line): VBoxManage setextradata “” VBoxInternal/Devices/efi/0/Config/DmiSystemSerial ““Make sure you remove the quotes while entering the above command.Starting up the machine after this change will then present a serial number that matches the base system and applications will function correctly.This was tested on a Mac Pro 5,1 running 10.10.5 with VirtualBox 5.0.14. The guest was 10.11.3.

I was in the exact same situation. These machines are from IBM employee inventory and are classified 'IBM Certified Pre owned equipment'.
The model according to my purchase order was TAPPN9W6L. When my machine arrived I came to this blog looking for advice on my next step(s), as yes, these machines are being firesold with no operating system. I subsequently took mine to an Apple store (My first time to 'make a reservation' on the Apple Store home page, using the 'genius bar' option) where they completely reloaded Snow Leopard 10.7 for free, and then upgraded to 10.8 Mountain Lion for $20. It took almost two hours but it could not have been easier from a user effort standpoint.Try to return the Snow Leopard OS you bought and go to an Apple Store.
Not sure if this thread is still alive, but for future reference.If you have the machine handy, 'ds store's answer is the best. But if you can't get the serial number (prior to purchase, for example), I found that it's still possible to narrow it down with the information that IBM's website does give you. For example, I'm looking at a similar MBP being sold by IBM. Their website is pretty cryptic, but given what they do tell you (Core i5, 15', 2.53 GHz) and the list of past MBPs at everymac.com. It turns out there is only one laptop that matches those three specs. The MacBook I bought thru IBM was in incredible shape when I received it.

Looked brand new. The genius bar took very good care of me.
The laptop has work perfectly since. Not a single issue.I must note: I bought Snow leopard to install online or at the store for $19.99. Therefore, I was not charged for my stop at the genius bar, as I had a 'software' problem, I could not install it. Not sure if there will be $charge in other scenarios. It was well worth the $20. And i will say again, the MacBook was in execellent condition at a steal price.Good Luck!
Just a note - IBM is not refurbishing them. In my case, the MacBook was part of a numer of MacBooks they bought for a school and allowed the students to use them for a period of time.
At the end of the period of time, IBM receives them back and sells them. They wipe the drives clean with an IBM 'process' to remove all disk content. They do not have the 'rights' to reload the OS, hence they sell them completely wiped. They leave the process to the new owner. Only issue is, they do not provide any guidance to reloading the OS. The MacBook I bought thru IBM was in incredible shape when I received it. Looked brand new.
Mac Os Change Keyboard
The genius bar took very good care of me. The laptop has work perfectly since. Not a single issue.I must note: I bought Snow leopard to install online or at the store for $19.99. Therefore, I was not charged for my stop at the genius bar, as I had a 'software' problem, I could not install it. Not sure if there will be $charge in other scenarios. It was well worth the $20. And i will say again, the MacBook was in execellent condition at a steal price.Good Luck!
Apple MacBook Pro (9W6L) Slightly blemished TAPPN9W6LYour price$637.50.IBM Web Price$850.00.Sale!Free Extended Warranty - LaptopsSale!Free wireless mouse with laptop purchaseIn stock.Used Laptop (Refurb)Intel® Core™ i5—540M 2.53 GHzNo operating system4096MB/8192MBBuilt-in Camera500GB15.4' WXGACD-RW/DVD-RW ComboNoneGigabit EthernetNone802.11 a/g/n Wifi wireless and bluetoothNone3 months limitedIf you know an IBM employee, they are allowed to send you the link to get on the Employee Store. Once on the site, you will get the employee 25% discount off of the web price, free shipping plus extension of the warranty to one year (up from 3 months). The info above was cut / pasted off of the site about 10 minutes ago - they also have the 8GB version of the same laptop for $711.75 ('prices do not include tax; sales can only be made within the United States').I Googled the specs provided and according to a couple of web sites, these models translate into the following 'Apple-speak' identifiers:Mid-2010 15' - MC372LL/A -They're a pretty good deal if you don't mind the hassle of reloading the operating system. Apple Footer.This site contains user submitted content, comments and opinions and is for informational purposes only. Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Apple can therefore provide no guarantee as to the efficacy of any proposed solutions on the community forums. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the.