Previous 1 83 84 85 86 87 Next 1,467 Replies Latest reply: Jun 20, 2015 10:52 AM by ManeeshAgarwal Go to original post Branched to a new discussion.
  • Loner T Level 6 Level 6 (8,915 points)

    Partition GUID type code for Bootcamp is

    EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

     

    More than 4 partitions are not supported.

     

    You can download gdisk (GPT fdisk) from Sourceforge http://sourceforge.net/projects/gptfdisk/ and use the following link for a gdisk tutorial - http://www.rodsbooks.com/gdisk/

     

    Please backup all your important data before you do anything to the disk.

  • RockOn_23 Level 1 Level 1 (0 points)

    Hi Christopher Murphy, Loner T and everybody else,

     

    I have a problem and maybe you can help me to solve it :-)

     

    -----

    Due to iOS programming I switch from an Windows machine to an Macbook Air mid 2013.

     

    - I want to use Mac OS X only for XCode etc

    - I will use approx. 90% of the time Windows 7 (due to MATLAB, ANSYS, etc.)

    - I need one partition (NTFS or exFAT) for file exchange between Mac OS X and Win 7

     

    Until now I did not manage to have an partition beside Mac OS X and Win 7 (installed via Boot Camp) at all, because Win 7 won't boot after creating an additional partition :-(

     

    What would be the most performant way respectively how to set this up?

    ----

    Can you maybe assitst me to install/create this three partitions without problems?

     

    thx and kr

    RockOn

  • Christopher Murphy Level 3 Level 3 (555 points)

    It's not possible because it's not three partitions, but five. The EFI System partition and Mac Recovery HD partitions are hidden. Only 4 partitions are possible with Apple's Boot Camp implemenation. You could delete the Mac Recovery HD partition, and then you'd have EFI System partition, Mac HD, Windows, and "Extra".

     

    But in any case you need software that can read/write either NTFS from OS X, or HFS+ from Windows for this "Extra" partition. Therefore I see no advantage for creating a separate partition. Just directly read/write to either the Mac HS or Windows partition.

  • turbostar Level 4 Level 4 (2,920 points)

    Hey Chris, when and how would you delete the recovery HD partition? For when, anytime before creating the 5th partition? How, as I think it requires a terminal command, right, or can I do it via disk utility?

     

    I would like to have a 'data' partition on larger SSDs so clean installing, in theory, would not require me to restore the data files.

  • Christopher Murphy Level 3 Level 3 (555 points)

    Well, actually I gave such an incomplete answer as to be misleading because it rapidly becomes so complicated what to do next that for the mortal user I'd say a "data" partition should be something they need to get straight out of their head entirely because it's not supported by Apple at all, or any of their utilities. They've created a very restrictive environment to make a complicated thing easy, and by easy they give you basically provide two paths when in fact they only intended to provide one. The other path is even permitting Disk Utility to work on a Boot Camp modified disk -that's when most people run into trouble.

     

    1. Find on the Internet how to enable Disk Utility debug mode, and in that debug menu how to reveal hidden partitions on the disk.

    2. Now you can delete Mac HD.

     

    ## What comes next, I'm actually not sure because I haven't tested it, and therefore what Boot Camp will tolerate or disallow.

     

    3. You probably want to use Boot Camp Assistant, to both create the Windows install media, and also do the initiatial resize of Mac HD, and create a FAT32 volume for Windows which will be named BOOTCAMP. If you try doing the next step before this one, I think Boot Camp Assistant won't proceed - but I haven't tried it.

     

    4. Use Disk Utility to split the BOOTCAMP partition into two: one for Windows one for Data. Both must be formatted as MSDOS (a weird way of saying FAT32).

     

    5. When you get to the Windows installer you must make sure you pick the right partition (it should be the 3rd one in this case; the 1st FAT32 partition), and reformat it as NTFS before installing Windows. There's some obscure way to get Windows to install on FAT32, and it's a bad idea, if the installer still allows this.

     

    6. After you get done with the Windows installation, you may want to reformat the 4th partition whatever volume format you want. I suggest NTFS or HFS+ first. Then FAT32. Then exFAT. NTFS/HFS+ are journaled file systems. FAT32 and exFAT are not. FAT32 has two FATs so repairs are fairly straightforward and tend to work. exFAT has one FAT and repairs are less successful.

     

    But really my main advise is that extra partitions are ill advised and antequated. Just pick a folder on either the OS X or Windows side of things, and get the software needed for one or both OS's to be able to read/write the other OS's file system.

     

    Or get an external drive and partition and format it however you want, as these limtations don't apply there like they do on boot drives.

  • Loner T Level 6 Level 6 (8,915 points)

    Another suggestion I would make, is to use virtualization software like VirtualBox, Parallels, or Fusion and share folders between the two OSes. If you need access to underlying hardware on the Mac for any purpose then VMs  do not solve that problem, but do help in lessening the aggravation of Bootcamp partition management, so that is a choice to be made.

     

    The NTFS driver in OSX is readonly, but can support read-write of NTFS, with a possible hack.

     

    http://www.cnet.com/news/how-to-manually-enable-ntfs-read-and-write-in-os-x/

     

    I have also used NTFS-3g (OpenSource version of Tuxera), which requires OSXFuse.

     

    http://www.macports.org/ports.php?by=name&substr=ntfs

  • RockOn_23 Level 1 Level 1 (0 points)

    Hi Christopher,

     

    thank you for your help! I try to go the the way you described in detail. I think in step 2 you mean "delete the Recovery HD"?! Am I right that I will be able to use this Internet recovery/install without the Recovery HD?

     

    thx

    RockOn

  • RockOn_23 Level 1 Level 1 (0 points)

    Hi Loner,

     

    thanks for the tip with enabling NTFS write!!!!!!

     

    kr

    RockOn

  • Christopher Murphy Level 3 Level 3 (555 points)

    Oops. Step 2 should be delete Recovery HD, not Mac HD.

  • Christopher Murphy Level 3 Level 3 (555 points)

    Yes, step 2 should be delete Recovery HD not Mac HD.

     

    If you delete Recovery HD, you will no longer be able to do an emergency boot from the drive, which also means you can't run Disk Utility to do any sort of repairs. Instead, you'll need to boot OS X over the Internet. If you option-key boot to get the boot manager, you'll see a way to connect to a network, and you'll be able to boot the computer from the network and there you'll have the option to use Disk Utility or reinstall the OS.

     

    The other thing you can't do without Recovery HD is encrypt the drive with FileVault 2.

  • KaiKaiser Level 1 Level 1 (0 points)

    https://discussions.apple.com/thread/6160951

     

    sorry for posting this here, the link goes to my problem. I could use some help and instructions on what to do, i don't know if the informations i gave there are sufficient to find out what the problem is. Just need some help guys. thanks in advance

  • Csound1 Level 8 Level 8 (43,320 points)

    Christopher Murphy wrote:

     

    Yes, step 2 should be delete Recovery HD not Mac HD.

     

    If you delete Recovery HD, you will no longer be able to do an emergency boot from the drive, which also means you can't run Disk Utility to do any sort of repairs. Instead, you'll need to boot OS X over the Internet. If you option-key boot to get the boot manager, you'll see a way to connect to a network, and you'll be able to boot the computer from the network and there you'll have the option to use Disk Utility or reinstall the OS.

     

    The other thing you can't do without Recovery HD is encrypt the drive with FileVault 2.

    A far more reliable approach is to place data partitions on an external drive, everyone co-exists happily that way.

  • habloc Level 1 Level 1 (0 points)

    I am new here and hope that anyone can give me some advice.

     

    Unfortunately it seems that I have lost my bootcamp partition, from where I need just one file urgently by updating to mavericks.

     

    I have read practically all former posts of this discussion and tried to fix my problem that is:

     

    1) After updating my macbook from 10.6 to 10.9 my bootcamp installation with windows 7 (x32) was not showing up at the boot options any more, but instead a new option (Restore 10.9.2) showed up. I have never changed partition values before (only bootcamp installation did).

     

    2) I tried to fix the problem with Disk Utilty (check, repair), but without success.

     

    3) I found this discussion and used fdisk to change the id of the bootcamp partiton to 07. After change fdisk reported the values below, the bootcamp boot option showed up again, but starting it, I got the message "Missing operating system".

    fdisk.jpg

     

    4) I used testdisk to find the correct start and end sectors of the original bootcamp partition or to get access to the badly needed file. Unfortunately that didn't work well:

    testdisk.jpg

     

    5) I looked at all the partitions, but only the one with the size of 196857856 sect. seemed to hold some folders resp. files, but not what I expected and hoped:

    users.jpg

     

    6) I have no more ideas how to continue to restore the original bootcamp partition or at least the file needed. I do not want to continue with gdisk and delete and rebuild an hybrid mbr partition, as I could not find the correct sector values (begin and end), in addition I fear that mavericks might already have overwritten some of the bootcamp data.

     

    Please help me with your judgement: Is there any hope? I would very much appreciate a reply.

  • Csound1 Level 8 Level 8 (43,320 points)

    Can you see the Windows partition when booted into OSX?

  • habloc Level 1 Level 1 (0 points)

    Thank you for looking at my problem.

    Unfortunately I cannot see the Windows partition in OSX. I would have tried to copy the needed file that way.

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