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OS X - Operating System General OS operation information and support

drive upgrade - partitioning error


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dannnnn

 
Member Since: Jan 24, 2010
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hi there,

i have a current model macbook pro 13.3" running osx 10.6.2. it is my first mac and it is a great machine! however the standard 250gb hard drive is a little on the small side for me, so i purchased a 500gb hard drive as an upgrade.

to get my data from the old 250gb drive to the new 500gb drive i used a borrowed diskjockey pro which copies the data across sector by sector to make an exact image - very easy! after using this tool i installed the 500gb hard drive and the machine booted up first time and works just like it did before.

unfortunately, when i try to create a new partition in OSX's disk utility to take advantage of the extra space i get an error. it says 'partition failed with the error: the chosen file size is not valid for the chosen filesystem'. if i try to resize the existing partition to use up all of the available space i get a different error. it says 'partition failed with the error: mediakit reports partition (map) too small'.

so at the moment i can't figure out a way of using the extra 250gb of space!

it seems that this might be because of the way i copied the drive - because it copied everything off the 250gb drive sector by sector the partition table on the 500gb drive must think it is a 250gb drive?? indeed in the support section of the diskjockey website they say that it can be a problem and they offer a pretty straightforward method for fixing this with a windows machine... but nothing for a mac. grr, frustrating! but so easy to fix on a windows machine.

sooooo.. can anyone help me please?? how do i fix up the partition table on this mac!?
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6string

 
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I don't know about disk jockey.... but I suggest going again, but this time using CCC Carbon Copy Cloner - Home or SuperDuper SuperDuper! to copy your drive.
Then booting from the external HD with the clone, use whichever of those apps you used to clone back.

When I say going again, I mean cloning from the original drive.
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dannnnn

 
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...i don't have an external hard drive :/ it's essentially a software issue, so i'd rather not buy extra hardware and pull my macbook apart again to fix something that takes 30secs in windows!
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6string

 
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I don't know how you got to where you did with the way you did it.... and what takes 30 seconds in "Windows" is another crash.
It's not a software issue anymore.... you have no external drive with a backup (safeguard), so it is a user issue now!
Any means of fixing your partition table (without a backup) is a risk of losing all it's contents if anything goes wrong.
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6string

 
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http://www.diskology.com/support.html
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bobtomay

 
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Using a duplicator that is designed for use with NTFS and their own support still only mentioning a MS operating system that is now two back, their own faq is at least 5 yrs old and they only tested it with XP. I can only wish you good luck at finding someone that has used it successfully with HFS.

Your best bet is as 6string has recommended. It can be done for approx $20 with any number of kits similar to this. Great tool to have in your arsenal.

And like 6string, I must strongly encourage you to set up a bootable backup device. From one that works on others crashed computers from time to time, I find it unreasonable that anyone would be averse to having their data backed up.

I cannot be held responsible for the things that come out of my mouth.
In the Windows world, most everything folks don't understand is called a virus.
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dannnnn

 
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no need to preach to me about backups, i use online backups if all you are using as a backup is an external hard drive then i think it is you that should be worried! what if you drop it? if your house burns down?

saying that the device is designed for NTFS is completely wrong - it copies the data sector by sector, so it doesn't even read the file system!

and yup, it is still a software issue!! possibly the most frustrating thing about switching from a PC to a mac is that things work differently and you have to re-learn new ways of doing the same task! especially when people tell you that it's not possible!

is it possible to boot from a windows install cd on a mac?? maybe i could boot into a windows install environment and use windows to fix the problem?
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dannnnn

 
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hmm, tried booting from windows cd.. windows didn't like that, so it didnt help!

so is there any way to fix a partition table on a mac?
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Quote:
Originally Posted by dannnnn View Post
hmm, tried booting from windows cd.. windows didn't like that, so it didnt help!

so is there any way to fix a partition table on a mac?
No way at all if you keep refusing to accept good advice.

Regards.
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dtravis7

 
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It's too bad that Disk Jockey only made the partition the size of the old drive and does not offer a way to use the whole space as one partition on the destination drive.
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dannnnn

 
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firstly, you haven't given me any advice.. so i'm not sure why you felt you needed to contribute. secondly, the only advice in this thread has been to make backups.. and i already do that.
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dtravis7

 
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Apple - Support - Discussions - Partition Resizing ...

Maybe something here might help but read it carefully, the 3rd post in the thread looks like it might help. I have never tried anything they suggest so be careful.
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dannnnn

 
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yea dtravis it is the best thing and the most annoying thing about the device! you are guaranteed a perfect copy.. 250gb partition table and all! haha
i just didn't realise it'd be such a PITA to fix a partition table with a mac
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dannnnn

 
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thanks for the link!
i tried what it suggested, which was using diskutil in terminal.. this is what i get doesn't work

Code:
trout:~ dan$ diskutil resizeVolume disk0s2 100%
Started partitioning on disk0s2 big hard drive
Verifying disk
Resizing
Error: -9939: The partition cannot be resized.
it's not looking that good lord help anyone who gets a corrupt partition table on a mac and doesn't have excellent backups!
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dtravis7

 
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If in OSX if you right click on the hard drive and click on Get Info what does it show?
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