disk utility: problem with resizing a partition

Question

Level 1

0 points

disk utility: problem with resizing a partition

while trying to resize partition on my external drive with disk utility I get a message:

Partition failed with the error:
Filesystem resize support required, such as HFS+ with Journaling enabled

Disk format is Mac OS Extended (Journaled) - isn`t it HFS+? Then, what am I doing wrong? It is important to me not to loose my data

macbook cd 2.0, Mac OS X (10.5)

Posted on Oct 27, 2007 5:53 PM

Reply

Answer 1

Oct 27, 2007 5:55 PM in response to mosiejczuk

Are you sure the partition your trying to create is in HFS+ format? Check this please, or post a logfile from Disk Utility so we know exactly whats going on.

Reply

Answer 2

macjack

Level 10

111,168 points

Oct 27, 2007 5:59 PM in response to mosiejczuk

You can't use disk utility to re-size a partition "on the fly". You need to erase the entire disk to re-format.

-mj
macjack@gmail.com

Reply

Answer 3

Oct 27, 2007 6:08 PM in response to mosiejczuk

What is the partition map/table? System Preferences > Partition > Options > Select appropriate one. I have found that the master boot record prevents repartitoning/multiple partitions. If you plan on usining this with PPC as well as Macintel computers choose the Apple partition map and if you need a boot-able HDD for the Macbook choose GUIDE.

Sweet Polly

Reply

Answer 4

mosiejczuk Author

Level 1

0 points

Oct 27, 2007 6:09 PM in response to Dion Rodrigues

here is my disk utility log:

2007-10-28 02:07:23 +0100: Disk Utility started.

2007-10-28 02:07:56 +0100: Preparing to partition disk: “WDC WD20 00JB-00KFA0 Media”
2007-10-28 02:07:56 +0100: Partition Scheme: Apple Partition Map
2007-10-28 02:07:56 +0100: Mac OS 9 Disk Drivers installed
2007-10-28 02:07:56 +0100: 1 volume will be created
2007-10-28 02:07:56 +0100:
2007-10-28 02:07:56 +0100: Partition 1
2007-10-28 02:07:56 +0100: Name : “wojtkowe”
2007-10-28 02:07:56 +0100: Size : 136,2 GB
2007-10-28 02:07:56 +0100: Filesystem : Mac OS Extended (Journaled)
2007-10-28 02:07:56 +0100: Do not erase contents
2007-10-28 02:07:56 +0100:
2007-10-28 02:07:56 +0100: Modifying partition map.
2007-10-28 02:07:56 +0100: Partition failed for disk WDC WD20 00JB-00KFA0 Media Filesystem resize support required, such as HFS+ with Journaling enabled.
2007-10-28 02:07:56 +0100: Partition complete.
2007-10-28 02:07:56 +0100:
2007-10-28 02:07:58 +0100: Error with partition: Filesystem resize support required, such as HFS+ with Journaling enabled.

Reply

Answer 5

macjack

Level 10

111,168 points

Oct 27, 2007 6:18 PM in response to sweetpollypurebred

sweetpollypurebred wrote:
What is the partition map/table? System Preferences > Partition > Options > Select appropriate one.

I think you meant Disk Utility >> Choose uppermost icon, entire disk and choose partition tab.
Hover you mouse over for a few seconds for the Tool Tip.

-mj
macjack@gmail.com

Reply

Answer 6

mosiejczuk Author

Level 1

0 points

Oct 27, 2007 6:25 PM in response to sweetpollypurebred

it is "Apple Partition Map" - but please note that it`s an external drive, I don`t need to use it as boot

Reply

Answer 7

Oct 27, 2007 6:32 PM in response to macjack

Yes. Disk Utility. Sorry. But I meant to select the option button at the bottom center of the partition sheet. A drop down sheet appears with three choices. My situation was that even though the partition format indicated HFS+ it was not as Master Boot Record was the partition scheme.

Thanks,
Sweet Polly

Reply

Answer 8

macjack

Level 10

111,168 points

Oct 27, 2007 6:34 PM in response to mosiejczuk

APM disks are bootable.

-mj
macjack@gmail.com

Reply

Answer 9

MaplePub

Level 1

5 points

Oct 27, 2007 6:42 PM in response to macjack

+macjack wrote:+
+You can't use disk utility to re-size a partition "on the fly". You need to erase the entire disk to re-format.+

Actually, Leopard IS supposed to let you partition on the fly without reformatting. That is one of its touted features.

Reply

Answer 10

macjack

Level 10

111,168 points

Oct 27, 2007 7:46 PM in response to MaplePub

Well, shut my mouth 😉

-mj
macjack@gmail.com

Reply

Answer 11

mosiejczuk Author

Level 1

0 points

Oct 28, 2007 2:50 AM in response to macjack

It`s not really helpfull...
I`m trying to resize a HLF+ partition, but then Disk Utility tells me it has to be HLF+ and reports an error. Can I do anything with it?

Reply

Answer 12

Oct 28, 2007 6:18 AM in response to macjack

APM disks can boot a PPC only. In order to boot an intel it needs to be GUIDE. The drawback of this is that it can only be accessed from a PPC through IP over FireWire (networked) and not as an external or Target Disk Mode as a PPC will produce an error warning that there are no volumes it can read.

I was able to get around this by formatting twice. Once to make it an Apple Partition Map (volumes current) and the second time to actually partition the HDD into volumes/sizes. It was always reverting to Master Boot when I tried to format and partition the volumes in one shot as whenever I changed or split the volume after selecting APM I found it had reverted back to Master when I went back to Options to check. I got the same error DU says it Apple Partition Map but the options sheet still says MBR. They start at different points of the disk and this is causing this error.

If you are trying to resize an existing volume without erasing it you would have to use a third party utility.

Sweet Polly

Reply

Answer 13

macjack

Level 10

111,168 points

Oct 28, 2007 8:56 AM in response to MaplePub

{quote:title=MaplePub wrote:}
Actually, Leopard IS supposed to let you partition on the fly without reformatting. That is one of its touted features.

Well, I've been looking and can't find a way. Can you point me to a reference on how? All I've found is this support topic.

-mj

Reply

Answer 14

Oct 30, 2007 10:22 AM in response to mosiejczuk

I'm getting this same problem. External drive, HFS+Journaled, Apple Partition Map.

According to Disk Utility Help, this should be possible.

Reply

Answer 15

nerowolfe

Level 6

13,090 points

Oct 30, 2007 10:41 AM in response to macjack

macjack wrote:
APM disks are bootable.

-mj
macjack@gmail.com

There is a caveat here:
IMPORTANT: While Intel-based Macintosh computers can boot from GPT and APM, Apple only supports booting Mac OS X on these machines from GPT. Apple's GUI tools, like the Installer, will prevent you installing Mac OS X for an Intel-based Mac on non-GPT disks.

http://developer.apple.com/technotes/tn2006/tn2166.html

Also be very wary about using wikipedia for anything technical. Always use a reliable source and, if possible verify it.

Message was edited by: nerowolfe

Reply