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166 views

How do I roll back from Yosemite to Mountain Lion without Internet Recovery after erasing my hard disk?

I erased my MacBook Air hard drive - which came with Yosemite OS X - because I wanted to roll back to Mountain Lion (OS X 10.8), since Yosemite was giving me problems with my files from the previous ...
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1answer
25 views

Can I run a disc image of a cloned Tiger or Leopard PPC drive on a modern Intel Mac via virtualization software?

I have a PowerMac G5 PPC running Tiger and an old, white, Santa Rosa MacBook running Leopard. If I create cloned disc images of these OS drives, will I be able to run them in VMWare ...
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1answer
87 views

Time Machine Changed My External Hard Drive's to MBR and now I can't access it!

On Yosemite, I was using Bootcamp to install Windows on a part of my internal hard drive. When, bootcamp was finished (before booting into Windows), Time Machine popped up and asked me if I wanted to ...
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1answer
213 views

Why is a hard drive not readable anymore after removing it from the Mac?

I have a mid 2010 27" iMac. Until this evening it had an SSD (primary drive with OS X Mavericks installation on it) and a HDD as second drive. The HDD is a Western Digital I built into the iMac in ...
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807 views

How to fix broken GPT, GUID and unmountable and without type volumes?

I have Macbook pro with mavericks and 512GB SSD i accidentally deleted a partition and suddenly my mac could not boot any more and after i tried to do something with disk utility this is gpt -r show ...
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24 views

GUID partition scheme

If I try to change a partition scheme of a 4 partition HDD from Apple to GUID, iPartition warns me that 'system partition' will be erased. What does that mean? Thanks.
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0answers
18 views

Recovering reformatted partition

I have an external drive that had a single HFS+ partition (GPT). It was accidentally formatted. How can I recover the lost partition? I "know" the old partition map which (coincidentally?) is the same ...
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1answer
3k views

HD accidentally reformatted to MBR, how to get back to GUID?

So in trying to create an MBR partition of my hard drive which I could then use to boot a solaris-derivative OS using rEFIt, I messed up. Rather than a hard drive with a primary GUID partition map ...
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1answer
2k views

When is the GUID partition table (GPT) preferred over Apple partition map (APM) for external drives?

I have seagate external portable hard-drive 1 TB, and I will be using with following Mac's. 13" White MacBook (Intel Core 2 Duo) running Snow Leopard 13" MacBook Air (Intel Core i5) running Lion iMac ...