Cannot Mount/Delete Microsoft Reserved Partition

Discussion in 'Mac Basics and Help' started by tcheck, Jan 17, 2009.

  1. tcheck macrumors newbie

    Joined:
    Jan 17, 2009
    #1
    Hey there,
    I can be smart in some aspects of computers, but horribly stupid in others. Right now I am in one of those stupid phases.

    Okay so let's start at the beginning: I have Windows 7 and Mac OS X installed on my computer. I was feeling rebellious, so I decided to try and install Ubuntu. I created a partition for it, got an installation disk, and restarted the computer. When restarting, I pressed the C key (obviously) and installed Ubuntu on my computer. All was working well, and then I decided to restart the computer. When I held the option key down to boot from my Ubuntu partition, I couldn't! I loaded up Mac OS X and went to Disk Utility. There, I saw my partitions: Windows HD, Macintosh HD, and Disk0s3 (Ubuntu HD). Disk0s3 was grayed out, and when I tried to mount it, I got this error message: "The disk “disk0s3” could not be mounted. Try running First Aid on the disk and then retry mounting." Of course, when I tried running First Aid, I learned that I couldn't (grayed out). I also tried erasing the partition, and even repartitioning the disk using a Windows 7 setup disk, but none of that worked. The partition type is Microsoft Reserved. I am completely and totally stuck. I have been searching the internet for an answer for upwards of 5 hours, and have found nothing comprehensible to me. Any help at all on getting this damn partition deleted would be immensely appreciated.

    Oh, I called Apple Care, and they were unhelpful, simply stating that I need to clear the drive and start over. That's not really an option, so I am hoping someone out here can help.
     
  2. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #2
    They may be right.

    Do you get an error when you try to format the Ubuntu partition? In what way did it not work?

    You could also try reformatting with the Ubuntu disk.
     
  3. tcheck thread starter macrumors newbie

    Joined:
    Jan 17, 2009
    #3
    Hello,
    Actually, after posting this, I followed the instructions at http://mindbat.com/?p=30 and was able to successfully triple boot my computer. As for removing a partition, it seems that I can successfully do that now, too!
     
  4. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #4
    Well, cool. :) I've never bothered to triple-boot, personally. I just virtualize Ubuntu (and Ubuntu Server) because I don't use them seriously enough to need to dedicate a bunch of time and system resources to the task.
     

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