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Dual Boot from same HD?


pianoplayer
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I'm trying to dual boot SL and Win 7. I managed to get an SSD, so I want to install both SL and Win 7 on it. If I try Boot Camp, I get the boot rom error message. If I install Win 7 after I install SL, I cannot boot SL without another SL bootloader on a seperate HD, because Windows always boots itself. If I partition the disk using SL installer and then go to install Win 7, it gives me an error message. If I partition and install in Win 7 Installer then SL makes me format the drive to let me install. I also don't want to virtualize - I'm already doing that, and it's not working well. Any suggestions? :rolleyes:

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I got an SSD as well, but I decided to just boot it separately with ease. I thought about doing what you're doing, but after researching about SSDs. It's better just to boot Windows 7 on it cause osx doesn't support TRIM yet.

 

I'm curious to this answer though.

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I got an SSD as well, but I decided to just boot it separately with ease. I thought about doing what you're doing, but after researching about SSDs. It's better just to boot Windows 7 on it cause osx doesn't support TRIM yet.

 

I'm curious to this answer though.

 

What I think I'll do is just make a ~10 gig partition for Win 7 on my 1 TB hard drive and boot SL from the SSD or vice versa. That probably will be easier.

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Yes, it is possible. I am running one setup on it(500GB hdd, 80gb for Leo rest for windows 7). While installing snow Leo, create a new FAT partition to install windows 7 onto. Then while instaling windows, get into cmd and mark that partition as active. Then when you get to install windows, format that partition and select it in order to install it. Do not delete it and recreate it as it created some problems for me. Install windows on it and use easybcd to add mac osx as a boot option(Mac, genericx86).

 

Posted from iPod.

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pianoplayer:

 

I believe your config is a SSD HD and another 1TB HD. If this is the case, this is a problem for WINDOWS. You can NOT have 2 or more HDs when installing Windows, it says something about now having the necessary conditions or similar comment.

 

What to do? Disconnect the 1TB HD when installing Windows.

 

DraggyGarg explained how to partition your HD. Install Snow first. Get into Diskutil and partition de SSD in 2 or more. Do select GUID in Options. One partition is Mac Extended format and for Windows use FAT. Install Snow with your selected method and then a) disconnect the other HD if not already done and :) start windows installation, when selecting the partition Windows will complain about not having a NTFS partition, so select the FAT one, and in Drive Option Format it. Then it should work.

 

When finishing installing Windows, you can connect the other HD.

 

You will have to go thru a procedure to get the SSD Snow+W7 bootable. Search in Insanelymac for that process (involves activating Windows part, Repairing W7, and again activating Snow partition).

 

Hope it helps.

 

BTW, this problem I found out cause I have 4 HDs and was very surprised I could not install Vista, XP or W7 when the other drives where connected. It apparently has something to do with Windows booting several times during install. It needs to know exactly that it will boot from the installed disk, my guess.

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  • 1 month later...

You guys need to partition the HD to 2: OSX, Windows OS using "GParted Partition Manager" or any other partition software. Here's the link to: http://gparted.sourceforge.net/

 

1. Using Gparted Partition, create partition and format for Windows OS, OSX. Windows OS first.

2. Install Windows 7 in Windows OS partition. Verify installation by booting to Windows.

3. Install EasyBCD v2.0. Here's the link: http://neosmart.net/forums/showthread.php?t=642

4. Run EasyBCD and create a OSX boot.

5. Install OSX in OSX partition & format(GUID).

 

You should have a multi boot OS at this time.

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Use Disk Utility to create two partitions in GUID scheme. One for MacOS (MacOS Extended Journaled) and one for Windows 7 (MS-DOS or FAT32). Install MacOS first. After you make sure MacOS is working properly, install Windows 7. At this point is boots into Windows 7 but not MacOS. If you need standby and hibernating (Windows) leave the Windows partition active and install easyBCD. Create a new entry for MacOS, but it doesn't work properly. You have to edit it from a command prompt (see my other posts) so it loads the chain0 file. This file is part of any MacOS boot loader, so you simply copy it to a flash drive within MacOS, and then copy into the root of your Windows partition (usually C:\) when into Windows. This way you can select either MacOS or Windows 7 from Windows Boot Manager. The funny thing it that then you see Chameleon (or whatever you have installed) and you may select again, just in case you changed your mind and want to boot into Windows 7. If the Windows partition is active, Sleep doesn't work in MacOS, only restart and shutdown work.

 

If you need Sleep (MacOS) then you have to make the MacOS partition active and use Chameleon (or whatever) to select between Windows and MacOS, but then you will lose standby and hibernation (Windows). The only way to have both Sleep and standby/Hibernation working is to install on separate disks and make both partitions active. Then you may configure your boot priority settings in BIOS to either start with MacOS or with Windows and then select (assuming you have enabled the other OS selection with appropriate entries in the boot loader).

 

I hope that helps.

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