Dell Mini 9 OS X Discussion Discussion for installing and setting up Mac OS X on the Dell Mini and Vostro A90

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ubuntufanXD ubuntufanXD is offline
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Join Date: Dec 2008
Default added a new partition and now os x won't boot - 11-17-2009, 04:05 AM

So I have 10.5.7 installed on a 250 gig external drive and all has been peachy for months but yesterday I decided I wanted a separate partition for backups so this is what I did:

Original scheme GUID:
1) os x on 60 gig hfs+
128mb of empty space dont know how it got there
2) 190gb of FAT storage

new scheme
1) os x unchanged
2) moved fat storage to the left and shrunk it to 130 gb
3) new fat partition that would be used for clonezilla

now i get the No Operating System Found message

i tried disk repair on another macbook and it didn't find any problems and read all the partitions fine
ubuntu reads it fine
windows xp however will not read either fat partitions which is unfortunate

any ideas?
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nobo_mini nobo_mini is offline
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Default 11-17-2009, 04:11 PM

Did the FAT partition in the original configuration ever work? You can't shrink a FAT partition in Disk Utility, only HFS partitions can be shrunk.

Thing is, I don't know how this could work, since the partition scheme is for the disk, not per partition. So, if you want bootable, it's GUID. If you want FAT, Master Boot Record.

Can see where you might have set the partition map as GUID, making the FAT portion(s) unusable. Don't see how that would have toasted the OSX boot partition. Unless you used the "# of partitions" drop-down list under "Volume Scheme" to create a third partition: that would have erased all the partitions, toasting your OSX.

Any files/data on the OSX partition? Can the other Mac(s) actually pull up any of the files there?

Mini 9 | OS X 10.6.7 | 2GB | 16GB STEC | .3Mp | No BT |
BIOS A05 | USB Legacy: ON | USB Wake: OFF | Bluetooth: OFF | NBI .8.4 RC1.1 (20100616212351)
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87vert 87vert is offline
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Location: Pittsburgh, PA
Default 11-18-2009, 01:33 AM

can you boot into safe mode using the NBI or Dellefi boot disk? from there you should be able to reinstall the bootloader.

Mini 9 | 2gb RAM | 16GB SSD / 8GB SDHC | OS X 10.6.3 Snow Leopard | NBI 0.8.4RC1
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ubuntufanXD ubuntufanXD is offline
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Join Date: Dec 2008
Default 11-19-2009, 04:52 AM

The first time I formatted the disk it was in the mac installer and I used GUID. I created two partitions: one for osx and a FAT partition for multi os storage. This worked just fine. The problem arose when I used gparted (Gnome Partition Manager for ubuntu) to shrink the existing partition. The really weird part is that all the files are still there and intact and can be accessed via ubuntu or another mac.

I will try using dellefi from a usb stick.

Thank you both for replying.
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ian ian is offline
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Join Date: Jan 2009
Default 11-22-2009, 09:42 PM

Maybe when you used gparted, it modified the partition map and that's messed up the bootloader somehow?

One time, I installed Chameleon manually on USB stick, then converted a FAT32 partition to ext3 using gparted. Then the USB stick didn't boot up Chameleon any more. I reinstalled the Chameleon boot file into the device (the boot0 file) and everything was working again.

Not sure how that helps you out though?
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