21 replies to this topic

[JrCs]

Hi,

here's an OSX port and enhancement i made to help creating hybrid MBR partitions on GPT drive.

Code came from project rEFit: http://refit.sourceforge.net/

The package below contain the gptsync command line tool for Mac OSX Leopard.

Source code is available here: https://github.com/JrCs/gptsync

You can download the package here:

Edit 31/12/12 version 0.3: gptsync-0.3.pkg

Old Versions:
Edit 02/08/09 version 0.2: gptsync-0.2.pkg.zip

JrCs

[tdtran1025]

Can u explain further.

[=SABER=]

http://netkas.org/?p=39

phnix had compiled 2 years ago.

[JrCs]

=SABER=, on Aug 1 2009, 06:22 AM, said:

http://netkas.org/?p=39

phnix had compiled 2 years ago.

Here it's an enhanced version. With selection of partition to add, to make active, etc....

[Ed_Saxman]

Your app was very useful for me!!

At least I have an GPT/MBR Triple Boot with OS X, win7 and Ubuntu 9.

Thank you!!

[saivert]

So you can't boot Windows from a GPT partition then? Windows 7 supports GPT.

[srs5694]

Windows 7 does support reading and writing GPT disks, but not booting from them, unless the computer uses EFI for firmware, rather than a BIOS. (I've corresponded with somebody who's used a post-BIOS EFI implementation to work around this limitation, but that's currently an awkward solution that doesn't work on all computers -- I couldn't get it to work myself, for instance.) So in a dual-boot environment with Windows and a need or desire to use GPT, you must have either multiple disks (at least one MBR for Windows to boot and at least one GPT) or a hybrid MBR configuration.

[caribouuu]

Whoa.  I just ran the installer and couldn't find anything having been installed.  I hope this isn't a trojan.

Where are the files it installed?

[Trauma!]

This is a command line tool caribouu...

It's absolutly not a trojan!

Open your terminal and type:

which gpsync

[Suzuka]

Rod Smith, on Oct 16 2009, 01:46 PM, said:

Windows 7 does support reading and writing GPT disks, but not booting from them, unless the computer uses EFI for firmware, rather than a BIOS. (I've corresponded with somebody who's used a post-BIOS EFI implementation to work around this limitation, but that's currently an awkward solution that doesn't work on all computers -- I couldn't get it to work myself, for instance.) So in a dual-boot environment with Windows and a need or desire to use GPT, you must have either multiple disks (at least one MBR for Windows to boot and at least one GPT) or a hybrid MBR configuration.

Er...then how did I install Windows 7 on my Hackintosh?

[srs5694]

Suzuka, on Dec 18 2009, 03:29 PM, said:

Er...then how did I install Windows 7 on my Hackintosh?

There are several possibilities:

• Your computer uses MBR rather than GPT
  
• Your computer uses a hybrid MBR (GPT+MBR) rather than a "pure" GPT
  
• Your computer has EFI-enabled firmware
  
• Possibly something else I'm forgetting

Without more details on your configuration, I can't narrow it down further than that; however, #2 seems to be quite common; many people run hybrid configurations and aren't even aware of it.

[sachink70]

how to use this zip pkg
please explain

what to type at terminal??

Trauma!, on Dec 19 2009, 01:53 AM, said:

This is a command line tool caribouu...

It's absolutly not a trojan!

Open your terminal and type:

which gpsync

[gcc1]

As a noob, especially when it comes to using command line, could someone provide a brief walk through on how to use this tool, (planning to use it for dual boot purposes).

Thanks.

[itry2hide]

looks like the command line installs as gptsync.  Now if I could figure out the switches.

[McDarling]

Just tried this. Attempting Linux install now.

[dabora]

Das sieht echt bescheuert aus und es muss doch eine Möglichkeit geben,  welche den größten Wert nimmt und das AR entsprechend


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[xbox361]

Fortunately, boot can be easily unset the same way you set it (using parted). But, when you do so, at least using the version of parted that comes with Ubuntu Gutsy, the msftres flag is set, and parted won't let you unset it no matter how many times you try. The main problem this caused for me was that the partitions marked as msftres would no longer be mounted automatically by OS X, so they didn't show up in the Finder, and they were grayed out in Disk Utility. diskutil list indeed showed their type as "Microsoft Reserved Data" or something to that effect. (I don't remember exactly, and I didn't feel like changing the type back just to do testing for this hint.)

[BugsB]

Usage: gptsync [OPTION]... DEVICE [PARTITION[+/-[TYPE]]] ...

gptsync fill hybrid MBR of GPT drive DEVICE.

Specified partitions will be a part of hybrid MBR. Up to 3 partitions are allowed.
+ means that partition is active (only one partition can be active).
TYPE is an MBR hexadecimal type (use -t option to list recognized types).

Valid options:
  -e, --empty             create an MBR containing only the EFI Protective partition
  -n, --nofill            don't try to protect unused partition
  -t, --types             list the MBR recognized type codes
  -h, --help              display this message and exit
  -V, --version           print version information and exit

examples:
sudo gptsync /dev/disk1 1 2+af
sudo gptsync /dev/disk1 2+

[asdfeas]

I just ran the installer and couldn't find anything having been installed,too. and don’t know why.anyone knows?
I’ll be appreciate for posting me.thanks.

[BugsB]

asdfeas, this is a COMMAND LINE utility = you have to run the commands (see given examples) in TERMINAL ......

Apart from that, I would love to get Grub4DOS going on a GPT partitioned drive - anybody know how to?