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I know this problem's thread are available but mine is different. I have two HDD installed. I have already installed ubuntu in /dev/sda1 and running fine. Now i install iMac in /dev/sba1 and that also running fine.

Problem is when i need to run mac then i need to select mac hdd as first boot from bios and same when need to boot on ubuntu.

I tried to add mac in grub (from ubuntu) but it did not work(latter i find the information that mac does not use MBR technique). Now i am trying to boot ubuntu from mac HDD.

From existing solution in internet they asked to create an empty partition and install ubuntu there. But i can do this. I have already installed ubuntu.

How to solve this problem? I need help. Thanks in advance.

Note: I have installed refit in mac. But does not show anything at start up.

My HDD partition table: [Information from mac terminal]

/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *74.5 Gi    disk0
   1:                  Apple_HFS MAC                     18.3 Gi    disk0s1
   2:               Windows_NTFS MOVIES                  28.3 Gi    disk0s2
   3:               Windows_NTFS ANY                     27.9 Gi    disk0s3
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *232.9 Gi   disk1
   1:                      Linux                         10.5 Gi    disk1s3
   2:               Windows_NTFS Windows7                19.5 Gi    disk1s1
   3:               Windows_NTFS EXTRA                   62.0 Gi    disk1s5
   4:               Windows_NTFS ENTERTAIN               62.0 Gi    disk1s6
   5:               Windows_NTFS SOFT&GAME               62.0 Gi    disk1s7
   6:               Windows_NTFS EDUCATION               16.9 Gi    disk1s8
/dev/disk2
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     Apple_partition_scheme                        *20.0 Mi    disk2
   1:        Apple_partition_map                         31.5 Ki    disk2s1
   2

:                  Apple_HFS rEFIt                   20.0 Mi    disk2s2

I am not sure what is /dev/disk2. First two disk(disk0 and disk1) are real.

1 Answer 1

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I use iBoot from tonymacx86.com. It is built on the Chameleon (or more recently Chimera) bootloader. It performs the same task as grub, but it is designed to work with OSX. It is also UEFI capable if your motherboard supports it.

Register at this forum: http://www.tonymacx86.com/
Then download this installer in OSX: http://www.tonymacx86.com/C:Dq-OCPpT/Chimera-1.7.0.zip

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  • i did. But it slow down the mac, hang mouse and keyboard and no boot
    – shantanu
    Jan 12, 2012 at 12:01
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    There's no way that Chameleon by itself would slow down the mac, as it is a bootloader. However OSX is funny about how it loads kernel drivers. What you should do is determine which kext OSX needs to boot and put them in /Extra so that Chameleon will load them at boot.
    – Huckle
    Jan 15, 2012 at 18:04
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    The easiest way to do this is to run the MultiBeast utility. Use this link for Lion: tonymacx86.com/C:Dq-OCPpT/MultiBeast-4.2.1.zip and this link for everything else: tonymacx86.com/C:Dq-OCPpT/MultiBeast-3.10.1.zip Read through this thread to see good basic MultiBeast setups: tonymacx86.com/viewtopic.php?f=7&t=10172
    – Huckle
    Jan 15, 2012 at 18:11

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