EFI and GPT Partition Issues on Windows 7

[will_flp]

Hi mates...

 

I need some help, I followed the Mammoth guide for installing OSX and Windows7....

(http://www.insanelymac.com/forum/index.php?showtopic=221653)

 

First I tried in a external disk (Disk1 on the attached image) and everything was fine.

 

So, I decided to do it on my internal disk (Disk0), I did all the same, however I got the problem that Windows7 do not recognize the "Data" partition (please see the att image).

 

The structure I'm using is:

 

Cham (HFS+)

OSX (HFS+)

Windows7 (NTFS)

Data-Stuff (I have tried it all NTFS, FAT and HFS+)

 

So I plugged the external drive, then I realized Windows7 classifies the first partition of 200Mb in a different way, i.e., "GPT Protective Partition" and "EFI System Partition" (see the att image).

I have revised all the steps I did and for me it seems they were the same.

 

1. So, do you know what would be the possible difference on the installation process??

 

2. How can fix this problem of recognition of the "Data" partition??

 

Thanks a lot,

 

Will

[mulcyber]

I have some observations which may be useful.

http://www.insanelymac.com/forum/index.php...00#entry1627118

 

Posts 502, 503, and 504 describe Windows 7 as having a problem with hibernation,

unless Windows is booted from the same drive it is installed on. Earlier versions of

Windows had to be installed on the first drive, first partition, in order to multi-boot

standardly. I'm not sure if that is still true for Windows 7.

 

However, if Windows is installed to the MBR, there is a limit of four primary partitions

for that drive, unless you can hide partitions perhaps with a 3rd party bootloader.

 

About your data drive ... Again I'm not sure about Windows 7, but XP can't format a

drive as Fat32 larger than 32 GB, but it might work if you format it with Gparted. Also no

individual file can be larger than 4 GB using Fat32. I would try deleting the data partition

(after backup) and to use Administrative Tools -> Disk Management in Windows to format

it as NTFS; the deleted partition should detect now as "unallocated". I triple boot and I have

two internal drives, Windows on one, and SL and Linux on the other; for one thing it avoids

using gptsync for hybrid partition information. which is not totally reliable (Rod Smith) . I have a

2TB portable USB drive which is used for data and works with all Win7, SL and Pinguy, it's NTFS.