4
votes
1answer
17k views

How to upgrade Mac Pro 1.1 from OS X 10.6.8 to OS X 10.9 Mavericks?

Upgrading the Mac Pro 1.1 2006 in the standard way using the app store is not possible. This is caused by the lack of the 64 bit EFI bios. The hardware of the Mac Pro 1.1 is already complete 64bit ...
1
vote
1answer
83 views

Gray Progress Bar in Macbook Boot caused by Partition Fault

Here's my problem: When I try to load my Macbook it shows the gray progress bar. It takes a while to fill the whole progress and after it Macbook just shuts down. I tried to boot from a recovery ...
0
votes
1answer
107 views

Which bootloader to use when dual booting a Mac without OSX (Win/Ubuntu)

A while back I used Bootcamp to install Windows 8 on my 2011 27' iMac. Accidentally using the Windows installer I overwrote Windows onto my OSX partition. Now I would like to install Ubuntu on to my ...
1
vote
1answer
2k views

Removing the EFI partition from external HDD on OS X

After formatting an external hard drive with OS X's diskutil, the disk is automatically split into 2 partitions like so: Finished partitioning on disk1 /dev/disk1 #: TYPE ...
3
votes
1answer
1k views

What are the .efires files on OS X Lion's Recovery HD?

If you mount the Recovery HD that enables OS X Lion File Vault 2, Safari mode, and certain recovery options, you see several .efires files. What format are those and what do they contain?
1
vote
1answer
509 views

Does Mac OS X Lion / 10.7 support UEFI 2.0?

I've been hoping for a while that Mac would move to UEFI 2.0 from the older EFI 1.x spec (for many reasons, such as an ability to boot Windows natively on UEFI without running it under bios emulation, ...
1
vote
4answers
11k views

Is there a list of available boot-args for darwin / OS X

In OS X you can set boot parameters with nvram boot-args=[options] Where the options I know about -v (verbose) -x (safe mode) and arch=x86_64 (boot into 64 bit kernel on 64 bit capable machines). ...
1
vote
2answers
2k views

How to force Mac to into dirty shutdown state on every power off?

As Far as I can tell no one has actually solved this debacle. How do you get a mac mini to power on every time the UPS it is connected to restores power? It is easy enough to have the UPS communicate ...
2
votes
2answers
856 views

Unable to boot into Windows partitions on early-2008 MacBook Pro using Crucial M225 128gb SSD

I purchased a Crucial CT128M225 SSD on October 19th for my early-2008 17" MacBook Pro this week (Boot ROM: MBP41.00C1.B03). I'm currently running OSX 10.6.1. The Apple EFI 1.7 Firmware Updater says ...
12
votes
5answers
89k views

Can I delete the 'EFI System Partition' without harming other data on the drive?

I have three external HDDs in a USB enclosure. After a recent upgrade to Windows 7, during which these three drives were actually installed inside the PC tower, two of the three drives now have a ...
31
votes
2answers
95k views

How do I remove an EFI System partition from a drive in Windows 7?

I have an external HD which used to be my TimeMachine drive. I got a different drive for that, so I want the original drive back as an external on my Windows box, but it has this random 200 MB ...
1
vote
2answers
1k views

Snow Leopard 64 bits mode (EFI64 Firmware)

How do I get the EFI64 firmware on my iMac 20" (late 2006) with Intel Core 2 Duo?