Partition Lacie drive without erasing exisiting data/memory

I have a Lacie 500G external drive. Currently the drive is not partitioned, and has around 250G of free memory and the other 250G taken up with various files. I want to partition around 200G of the drive to dedicate to my Time Machine back-up.

Unfortunately when I use disc utility to partition the Lacie, it will erase the entire drive prior to partitioning. Is there any way to partition the drive without erasing my existing data on the drive? Any suggestions or help would be greatly appreciated.

G5 Dual 2.0, Mac OS X (10.5), ACD 23"/Lacie Ext Hard Drive 500G/HP Color Laser Jet 2550L/5th Gen 60G ipod

Posted on Nov 7, 2007 4:14 PM

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10 replies

Nov 7, 2007 4:35 PM in response to Roger Barton

How is your Lacie drive formatted.

In Disk Utility, under Leopard, you should be able create a new partition without erasing the whole drive.

In the Partition Tab, first you resize the current partition to a smaller size by dragging the little hash marks in the bottom right corner to be smaller. then you hit the + sign to add a new partition.

But this can only work with certain format schemes (HFS+, etc).

Nov 7, 2007 7:08 PM in response to Roger Barton

If this helps, here is the info on my Lacie drive:

Name : LaCie SA
Type : Disk

Partition Map Scheme : Apple Partition Map
Disk Identifier : disk2
Media Name : ST350063 0AS Media
Media Type : Generic
Connection Bus : FireWire
Connection ID : 58629752701034107
Device Tree : fw/node@d04b730f039e7b/sbp-2@c000/@0:0
Writable : Yes
Ejectable : Yes
Mac OS 9 Drivers Installed : Yes
Location : External
Total Capacity : 465.8 GB (500,107,862,016 Bytes)
S.M.A.R.T. Status : Not Supported
Disk Number : 2
Partition Number : 0

It is formatted in Mac OS X Extended (Journaled)

Nov 8, 2007 10:49 AM in response to Roger Barton

My only advice is to be very careful. I wanted to partition my Lacie drive so that Time Machine would have its own volume. I believed everything I was told by disk utility (that no data would be erased) and went ahead - and lost it all. Thankfully what I lost was not critical to me, but nevertheless it was a real pain. I've no real idea what happened, and whether I did something I shouldn't have. But I don't think I did. I followed the instructions on screen, which were reassuring.

So - back up your data before you do anything.

Nov 13, 2007 1:31 PM in response to gnawbone

you have to select a disk, and not one of the volumes on the disk.

so if you look on the left side of the disk utility window, you will see something like:
"93.2 GB ST910021AS Media"
and then under that you will see: "Macintosh HD"

You need to select the first one to see the Partition Tab. If a Hard Disk has more than one partition, you will se multiple items under the top level.

Short answer: its a hierarchical menu and you need to be selected on the top level.

Nov 13, 2007 1:39 PM in response to Roger Barton

Roger:

Are you still having problems? I have been away for awhile.

Based on what you posted, you should be able to partition the drive. But since it is not working... After backing up the data on it, you may need to wipe the drive and start over. Make sure you erase the whole drive, not a volume on the drive. Basically click on the top level for the drive (on the left of disk util window), then goto the erase tab. In the Erase Tab, Choose Ma OS extended (Journaled), give it a name, then click on the Security Options button, and choose zero out data.

Once you have completely erased the drive, then try to partition it.

hope this helps.

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Partition Lacie drive without erasing exisiting data/memory

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