BrunoBraga Posted June 13, 2011 Share Posted June 13, 2011 Hello guys, iam new here and i have a problem that is starting to annoy me. So..i want to make a tripleboot :iatkos + windows7+ linux. So i installed iatkos first. It worked fine. Then i tried to install windows. I installed macosx on a partition and left the rest of the HD for windows. When i get to the part of windows 7 installation where i have to choose the partition, i partitionate the rest of the space for windows..but for my surprise...it wont partitionate and when i try to install windows on the hd remaining space, i cant. It returns a error saying: cant install windows on a GPT partition. Oh well. Lets google..and i find..install windows first and then macosx. Well i did that. I installed windows7, i reserved some space for macosx..then i star macosx. I go to the disk utility to format the partition to install iatkos. When o choose the partition i got from windows 7 partition system, i cant install. It returns a error saying: cant change the partition map . My question is...how the hell am i supposed to install both. People..iam new here as i said..and forgiveme if iam beeing noob. Hope you can help me guys Link to comment https://www.insanelymac.com/forum/topic/259218-tripleboot/ Share on other sites More sharing options...
srs5694 Posted June 18, 2011 Share Posted June 18, 2011 This is an old problem. Basically, Windows will only install to a disk that uses so-called Master Boot Record (MBR) partitions on BIOS-based computers, whereas OS X wants to install on (note: "install on;" when running it's more flexible) a disk using the completely different GUID Partition Table (GPT) system. There are three traditional solutions, but a fourth is becoming increasingly workable: Use a hybrid MBR, which is a dangerous and ugly hack that enables MBR and GPT to co-exist (sort-of) on a single disk. Apple uses this on real Macs, and it's a popular choice in the Hackintosh community. I've encountered and heard of too many problems with it to recommend it, though. Install Windows under MBR, then install OS X to a different disk (even a USB flash drive) using GPT, then use Carbon Copy Cloner or some other utility to copy the installation to the MBR disk. This is more work than using a hybrid MBR, but it's safer. Use a hacked installation utility to enable installation directly to an MBR disk. Such utilities exist and are fairly common, but I don't happen to have a URL handy. The newest option is to use UEFI DUET to make your PC look like it's got UEFI firmware. Windows will install to a GPT disk when the computer uses UEFI, so the combination of UEFI DUET and a standard Hackintosh boot loader for OS X should work fine. UEFI DUET is a pretty "bleeding-edge" tool right now, though. You can read about its use here; but for your use, you'd probably want to use GRUB Legacy or GRUB 2 as the MBR-resident boot loader rather than the SYSLINUX that the page describes. Note that some PCs, including many of the latest ones, have UEFI firmware built in and so don't need the DUET software; you'd just need to adjust a firmware option to enable UEFI booting support. Overall, a hybrid MBR is the easiest but most dangerous option. Either of the options to install to an MBR disk is fairly safe and simple, particularly starting from your current situation. UEFI DUET is worth considering if you're into pushing the envelope or if you have a compelling reason to use GPT rather than MBR (such as a 3TB boot disk, for which MBR is inadequate). If you've got a motherboard with built-in UEFI support, I'd recommend using that for your Windows installation; but I'm not sure how this would impact your OS X installation. Link to comment https://www.insanelymac.com/forum/topic/259218-tripleboot/#findComment-1699756 Share on other sites More sharing options...
BrunoBraga Posted June 18, 2011 Author Share Posted June 18, 2011 This is an old problem. Basically, Windows will only install to a disk that uses so-called Master Boot Record (MBR) partitions on BIOS-based computers, whereas OS X wants to install on (note: "install on;" when running it's more flexible) a disk using the completely different GUID Partition Table (GPT) system. There are three traditional solutions, but a fourth is becoming increasingly workable: Use a hybrid MBR, which is a dangerous and ugly hack that enables MBR and GPT to co-exist (sort-of) on a single disk. Apple uses this on real Macs, and it's a popular choice in the Hackintosh community. I've encountered and heard of too many problems with it to recommend it, though. Install Windows under MBR, then install OS X to a different disk (even a USB flash drive) using GPT, then use Carbon Copy Cloner or some other utility to copy the installation to the MBR disk. This is more work than using a hybrid MBR, but it's safer. Use a hacked installation utility to enable installation directly to an MBR disk. Such utilities exist and are fairly common, but I don't happen to have a URL handy. The newest option is to use UEFI DUET to make your PC look like it's got UEFI firmware. Windows will install to a GPT disk when the computer uses UEFI, so the combination of UEFI DUET and a standard Hackintosh boot loader for OS X should work fine. UEFI DUET is a pretty "bleeding-edge" tool right now, though. You can read about its use here; but for your use, you'd probably want to use GRUB Legacy or GRUB 2 as the MBR-resident boot loader rather than the SYSLINUX that the page describes. Note that some PCs, including many of the latest ones, have UEFI firmware built in and so don't need the DUET software; you'd just need to adjust a firmware option to enable UEFI booting support. Overall, a hybrid MBR is the easiest but most dangerous option. Either of the options to install to an MBR disk is fairly safe and simple, particularly starting from your current situation. UEFI DUET is worth considering if you're into pushing the envelope or if you have a compelling reason to use GPT rather than MBR (such as a 3TB boot disk, for which MBR is inadequate). If you've got a motherboard with built-in UEFI support, I'd recommend using that for your Windows installation; but I'm not sure how this would impact your OS X installation. Hello srs5694. Thanks in advance. There is something i couldnt figure it out yet. I have seen tons os posts about this tribleboot thing. I have seen many people with problems about it...but i cant seem to find nobody with this kind of problem...which is strange. I mean...iatkos works perfectly on my machine, the only problem is what i mentioned. For some people this is the real problem...they cant put iatkos to work. I have done a trick at some days ago. I got gparted from linux and i formated the partitions...one of them..hfs+ for iatkos. After all, the damn OS wouldns accept it. I have a 1 TB hard disk (WD). YEah, i thought about to putting it to work with mac OSX...but i would have to format it,and i dont want that. Iam not considering, taking a second HD. I have seen the article about the last solution and it looks like it messes with bios. I really dont want to fry the pc. Is there another simple alternative?, besides the first that as you said is quiet problematic. Iam asking that because..though iam experient...iam not that experient Link to comment https://www.insanelymac.com/forum/topic/259218-tripleboot/#findComment-1699860 Share on other sites More sharing options...
srs5694 Posted June 20, 2011 Share Posted June 20, 2011 The UEFI DUET method does not mess with your BIOS; the UEFI DUET software runs as a normal application, loaded from hard disk, and it doesn't modify your BIOS in any way. OS X can be fussy about its install partition. Most importantly, it likes to see a gap of 128 MiB after (and maybe before) that partition. If that gap isn't present, it won't install to it. The installer also wants the partition to have its journal enabled, which IIRC GParted doesn't do by default (I don't think there's an option to do so, either). For these reasons, using GParted to prepare a partition for OS X installation is definitely not the way to go. If you must prepare the partition in Linux, be sure to leave those 128 MiB gaps and then use mkfs.hfsplus to create the filesystem. That tool has an option (-J) that creates a journal, which should make it more to the OS X installer's liking. Link to comment https://www.insanelymac.com/forum/topic/259218-tripleboot/#findComment-1700877 Share on other sites More sharing options...
BrunoBraga Posted June 24, 2011 Author Share Posted June 24, 2011 Hi again...Sorry for the answer delay. So...i made some searches and i read that website about uefi duet and as far as i can tell..it might work or not which is expectable but not wanted. I read the old post again and i saw a solution that surprised me. I could install iatkos on a pen and then put it on a partition by windows..but some problems might arise. How am i supposed to load the OS then? Since its put on a windows partition will it work or will it crash?...i think you can understand my point of view since this solution is classic, kinda original but very farfetched. This is my computer. http://h10025.www1.hp.com/ewfrf/wc/documen...l&site=null Apreciate the help Link to comment https://www.insanelymac.com/forum/topic/259218-tripleboot/#findComment-1702691 Share on other sites More sharing options...
BrunoBraga Posted June 24, 2011 Author Share Posted June 24, 2011 so. I have decided to buy a small external hd. Iam getting really tired of trying. This wont work on the same hd. So tell me guys..how big should be the hd? Is it worth it?is it going to run to slow? What is the probability of working? Thanks in advance Link to comment https://www.insanelymac.com/forum/topic/259218-tripleboot/#findComment-1702826 Share on other sites More sharing options...
3.14r2 Posted June 24, 2011 Share Posted June 24, 2011 An USB HDD usually works. A 120-160 min drive should be OK. It will be slower then an internal drive in any case. Probably it won't be easy to work with (regarding speed). Link to comment https://www.insanelymac.com/forum/topic/259218-tripleboot/#findComment-1702840 Share on other sites More sharing options...
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