Disk Utility - minimum diskimage size

Folks;
Using Leopard's Disk Utility, I want to make a disk image for a particular file and size the image to be the minimum required for my ~6.5M file.
I create a new image (20M), because a 10M tells me that there is only 1.7M free and won't let me copy my file onto it. Then I resize the diskimage and the minimum I am offered is 16.9M.
What am I missing here?
Does a disk image ACTUALLY need 10M for its own usage?
Thanks for any help!
Steve

V.K. wrote:
it looks like DU will not allow you to create a partition smaller than one tenth of the disk size.
when i do it on a 200GB drive the smallest size it let's me make is 20Gb, and for a 500GB drive it's 50GB.
I guess that's a safeguard against creating too many partitions.
Message was edited by: V.K.
I thought so. Like most filesystems, all the information must be stored in the bootsector or whatever it's called with BSD, and the total number of files is related to the sizes and total numbers of partitions, so like FAT32 or even NTFS, HFS has it's practical and theoretical limits.
I believe HFS has two bootrecords or equivalents, one for backup and this adds to the storage space issue.
Going back to the old 1.44MB floppies, the unformatted size was over 1.7 MB and Norton and MS took advantage of that, but not all disk readers were happy with what they did. MS once shipped Windows on a set of 1.7 MB floppies. Of course this was BC (before CDs).

Similar Messages

Disk Utility - smallest partition size

I have new 500 GB external drive. Using Disk Utility I created GUID partition schema and created 4 partition - 3 x Mac OS Extended (Journaled) a 1 x FAT32 (initially with same size). Disk Utility doesn't let me resize 1st partion (the highest one) and 4th partition (the lowest one) smaller then cca. 50 GB (divider with 2 arrows changed to divider with 1 arrow). (I don't know if it's possible with other partitions to size them smaller then cca. 50 GB since I want them have large and I use disk already.) I didn't find anything about this in help, books or internet.
Is there limit in Disk Utility about minimum partition size? (It looks like cca. 10 % from drive size).

V.K. wrote:
it looks like DU will not allow you to create a partition smaller than one tenth of the disk size.
when i do it on a 200GB drive the smallest size it let's me make is 20Gb, and for a 500GB drive it's 50GB.
I guess that's a safeguard against creating too many partitions.
Message was edited by: V.K.
I thought so. Like most filesystems, all the information must be stored in the bootsector or whatever it's called with BSD, and the total number of files is related to the sizes and total numbers of partitions, so like FAT32 or even NTFS, HFS has it's practical and theoretical limits.
I believe HFS has two bootrecords or equivalents, one for backup and this adds to the storage space issue.
Going back to the old 1.44MB floppies, the unformatted size was over 1.7 MB and Norton and MS took advantage of that, but not all disk readers were happy with what they did. MS once shipped Windows on a set of 1.7 MB floppies. Of course this was BC (before CDs).

Disk Utility: Reporting wrong size for disk after a restore

First up, hardware is G4(PPC) running OS 10.4.11
I've just purchased and installed a new 500G drive for this old workhorse as an upgrade for the previous secondary drive. Set it up with a single partition, JHFS+. No problems so far. Went to copy the files from the old drive to this new one and thought, "Why don't I try that handly looking Restore button?". +Yeah, apparently a bad idea+. The old drive is 120GB. I set its (only) volume to be the source and my newly created partition to be the target; set it going and left it alone. All appeared to be well when I came back, until I checked the available space on the new drive.
Disk Utility now reports that this new, 500G drive has a Total Capacity of 128G (137,438,952,960 bytes).
*Remedies tried so far:*
- I've tried reformatting/partitioning, but wasn't able to convince it otherwise. Also tried it booting from an install DVD just in case that made a difference.
- I downloaded a utility from the drive manufacturer which I managed to get on to an ancient, dusty w2k box. Reformatted the drive with 2 NTFS partitions. This seemed to do the trick as they both mounted when I rebooted the Mac. However, when I went to reformat the volumes to JHFS I noticed that the total disk size was still being reported as 128G. Still, they reformatted fine and I transfered my data to them. On a reboot, though, the Mac decided that it didn't want to see the second partition and only shows me disk1s10, ignoring the second partition I set up.
- I have an identical, empty drive to the 500G. I thought I might be able to use the Restore "feature" to trick it back. Set up the second 500G in a firewire box, ran the restore from the empty volume to the screwed up one. No dice.
I thought that OS X ignored any sort of BIOS info on a drive and merely looked at the physical media. Is this correct? Does it store this gathered info in a file somewhere that I can delete?
*This is a call for help.*
I have no problems playing with the command line as root, if that's the sort of suggestions you've got. I just thought I'd ask here before I fdisk/dd etc from new500 to old500. Geometry of the new500 is 60801/255/63.

Thanks! That sounds like a good short term solution for a backup.
EDIT: Cross reference link for anyone who happens to google this thread with a similar problem:
http://discussions.apple.com/thread.jspa?messageID=7230072&tstart=0
Message was edited by: mr_lunch

Infinite restore loop AND disk utility lists HD size as 500GB

So, after reading everyone else's problem with the restore loop i have another kink to add to the mix. I am running software 1.2.1 in itunes 7.5 on a 5th gen 30GB ipod on a MacBook, and it is stuck in the restore loop. When I attempt to restore via iTunes, it says that iTunes can not restore the ipod becase it is busy. I have tried rewriting the disk via the Disk Utility but the DU lists the size of th disk as over 500GB. I had the iPod playing music and acting normal earlier this afternoon, this whole debacle started when i connected it to my computer for the first time in a few months to update the software. Any and all help would be appreciated.
I have tried alot of the other solutions listed elsewhere...but as far as i can find no one as had the wrong listed HD size problem.

Thanks for a quick reply <baltwo>. You’ve answered that it is not a fake message!
fyi: I thought that I would use my external Buffalo for two purposes; namely the smaller ExFAT partition for copying stuff to my win7 netbook. The larger partition was to be used as my imac image of SL. So this was my first attempt at using disk utility - the idea being to hold an image backup at another location. Plus I now have the Lion thumbdrive ready to upgrade from SL and so being cautious wanted to have a SL image backup
Anyway I followed the apple instructions using my mac 10.6.3 install DVD but it would appear from other discussions that <unable to scan (internal error)> is not unique to me.
I’ll get back to apple telephone support for further advice.
I would though be grateful for an “idiots’ guide to making an image backup of my internal HD that runs SL 10.6.8
eg should I have just one partition on the external USB drive? format it as Mac OS extended? create the image as compressed or read/write? Basically I’ll do whatever will work!!
thanks again

CD burning with disk utility - format and size for 800 MB - 90 minutes CD

Hi Support,
I'm trying to burn a CD with 800 MB (90 minutes) using disk utility. When I create a new empty image I can select the size. Unfortunately there is no option for a 90 minutes CD. When I create the image with 800 MB and I try to burn it, disk utility tells me that the image is too big. So my first question is what is the maximum size for such a CD?
Next question, which format should I use? When creating a new empty image, I have the options "Beschreibbares Image" and "Mitwachsendes Image" (I have a Germann OS). But I dont't have the option to create a "CD/DVD Master", which is availabe, when I create an image from a folder. What I have to do, is to convert the image afterwards to a "CD/DVD Master". This is very circumstantial.
So my questions are:
1. Is there an easier way o create an empty disk image for a CD/DVD?
2. Is the format "CD/DVD Master" required to burn a CD. It is also possible to burn images with other formats. What is the advantage/disadvantage of this format?
3. Which format is required to use the CD in a Windows computer or a standalone CD/DVD player? The volume format must probably "MS-DOS Filesystem" in this case?
4. Is it possible to burn multi session CD's in this case?
5. Is there a comprehensive documentation somewhere available for this burning issue on Mac? The help of disk utility is really not enough.
Thanks for answers and hints Thomas

Hi thmayr!
Although the original instructions were for a 700 MB disc, perhaps the article linked to below, could be helpful.
From "Macworld" Feb 2005 issue p.90 Link To Article. Scroll to the second tip on the page: "Unix Tip of the Month: Utilize Extra Space on CD-Rs".
Content:
Create a new folder in the Finder.
Drag everything you want to burn, up to 700 MB, into the folder.
Open Terminal and type cd ~/Desktop
Press the Enter key. This changes Terminal's active directory to your user's Desktop folder.
Type hdiutil makehybrid -o myburn.iso (There's a space after the o in iso, and myburn can be any name you choose) DON'T press Enter
Switch to the "Finder"
Drag & drop the folder you created onto the Terminal window. Terminal should fill in the full path to the folder.
Press Enter. Enter key will then execute the command.
What you have done is used the hdiutil Unix command to create a hybrid disk image named myburn.iso (you can choose whatever name you like, in place of myburn, but use iso for the extension.
You should see the message "Creating hybrid image" in your Terminal window, as well as an indication of the task's progress.
When finished, you should see a disk image called myburn.iso on your Desktop.
You can use Disk Utility to burn this image, or you can type
hdiutil burn ~/Desktop/myburn.iso in Terminal
Insert a blank CD-R when prompted, and then just wait until it's done.
ali b

Disk utility reporting wrong size drive

I have a Macbook 4,1 with an 120GB Hard drive. The hard drive has 3 partitions:
12GB Linux Partition
100GB OSX Partition
1GB Linux Swap Partition
It also has 7GB of Free Space at the end of the drive
Now I want to shrink the OSX Partition down to around 80GB (It has 30GB available space) so I have 27GB of Free space to create a Windows Partition. The problem is when I go into disk utility it reports the above partition structure but it also reports I have "100.3GB Free space" at the start of the drive. This is obviously incorrect. It seems harmless enough but the problem is it causes a "The chosen size is not valid for the chosen filesystem" error when I try to resize the OSX partition because the system adds up the size of all of the partitions, realises it's 220GB and so throws the error because it's above the 120GB Drive size. I can't seem to get it to realise that there is no free space at the start of the drive. I've tried using a couple of Linux partitioning programs like GParted and they recognise the correct partition structure but they had a couple of unrelated problems.
Does anyone have any ideas how I can get Disk Utility to sort itself out?

I do not think you can use DU for resizing if you used a linux disk utility before. I never could do that, but am ready to learn how to do that.

RAID Admin and Disk Utility show different sizes

Hello all,
I have tried searching through these forums for a resolution to this, but did not really find one. Here is my situation:
I have an XServe Dual G4 in a branch office. It has attached to it an XServe RAID. Last week, when I was down working in the office I added a new drive to the RAID. The lower channel on the RAID had 4 172GB drives in it, and I added a 5th and and told RAID admin to resize the RAID.
The next day, the RAID was finished resizing. RAID admin was reporting that the array was now 690GB. However, after rebooting the server and RAID multiple times, Disk Utility in OS X is still showing that the Volume on the RAID is only 517GB.
So, I have a couple of questions:
1. How is it possible that by adding a 172GB drive to a RAID 5 array that was about 520GB I ended up with an array that is 690 GB? That would imply that there is no parity (since 690 - 520 = 170 and the drive I added in was 172GB).
2. How do I get the server to see the additional space? The server is at the newest version of the OS and the RAID it as the newest version of the firmware.
Please help.
Mac OS X (10.4.8)

I've run into the same issue with a newer PPC XServe. However, after I tried to reformat, I still only show up with the orginal size, and not the new size, even after I restarted the server and XRAID.
Did you have any success with your reformat?

Disk Utility detects wrong size on my external FW disk...

I have a external firewire disk that I want to use with my macbook pro. It is a Maxtor Onetouch. It has previously been used with linux and had some ext3 and xfs partitions on it. Works like a charm on win/lin and is detected as a 250GB disk. But when I hook it up to my macbook Disk Util says it is 128GB only. I can create a 128GB partition on it.
I have 2 external disks. I have previously changed the HD inside both of those boxes without any problem on win/lin. The HD in question is a WD 250GB disk I just bought. I tried to put it in my Lacie FW enclosure only to see that it is still detected as an 128GB disk

Did you format it using the GUID partition map selection? AFAIK, MS-DOS and FAT-32 format might be causing your problem.

Disk utility shows incorrect size

When I open disk utility on my 2011 macbook air it shows that I have used 181gb with 68 free. But when I right click on my Macintosh HD and select Get info it shows that i have 215gb free and I've only used 34gb. *** is going on. My SSD should be 256 minus overhead/recovery. But these numbers are way off. And yes i have tried to reboot and clear my trash can/cache files.

I figured it out. It was the /.Mobilebackup folder that's taking up all the space. turned off localbackup and it wiped out the directory and cleared up the space. But i'm not sure if this is a good idea. It does give my all my space back in disk utility which is the same result as get info from my hd. These commands helped out a lot
df -H
sudo du -cxhd 1 /

Disk Utility buggy?

When I start Disk Utility (on Leopard), I get the following worrying messages:
<pre>EBMacPro:Contents eboily$ MacOS/Disk\ Utility
2007-11-03 09:52:33.655 Disk Utility[7896:10b] Error loading /Users/eboily/Library/Plug-ins/DiskImages/VirtualPCDiskImagePlugin.bundle/Conte nts/MacOS/VirtualPCDiskImagePlugin: dlopen(/Users/eboily/Library/Plug-ins/DiskImages/VirtualPCDiskImagePlugin.bundl e/Contents/MacOS/VirtualPCDiskImagePlugin, 262): no suitable image found. Did find:
/Users/eboily/Library/Plug-ins/DiskImages/VirtualPCDiskImagePlugin.bundle/Conte nts/MacOS/VirtualPCDiskImagePlugin: mach-o, but wrong architecture
2007-11-03 09:52:33.656 Disk Utility[7896:10b] Cannot find function pointer MacDiskImagePluginFactory for factory 4D08F98C-8968-11D6-8667-0003933E9206 in CFBundle/CFPlugIn 0x54ab60 </Users/eboily/Library/Plug-ins/DiskImages/VirtualPCDiskImagePlugin.bundle> (bundle, not loaded)
2007-11-03 09:52:33.664 Disk Utility[7896:10b] ********
2007-11-03 09:52:33.672 Disk Utility[7896:10b] Disk Utility started.
2007-11-03 09:52:33.851 Disk Utility[7896:10b] * CFMessagePort: bootstrap_register(): failed 1100 (0x44c) 'Permission denied', port = 0x6303, name = 'com.apple.DiskUtility.ServiceProvider'
See /usr/include/servers/bootstrap_defs.h for the error codes.</pre>
Then I select the option to write zeros on the disk, MacOS Extended Journaled and I launch the erase option:
<pre>2007-11-03 09:58:23.121 Disk Utility[7896:10b] Preparing to zero disk : âdisk2s1â
2007-11-03 09:58:23.122 Disk Utility[7896:10b] Passes : 0</pre>
I then hit skip (Read about my 9-hours long experience without skipping here), I get
<pre>2007-11-03 09:59:05.813 Disk Utility[7896:10b] Secure Erase skipped after calculatingâ¦.
0.0% complete.
2007-11-03 09:59:05.840 Disk Utility[7896:10b] Preparing to erase : âdisk2s1â
2007-11-03 09:59:05.840 Disk Utility[7896:10b] Partition Scheme: Master Boot Record
2007-11-03 09:59:05.841 Disk Utility[7896:10b] 1 volume will be erased
2007-11-03 09:59:05.841 Disk Utility[7896:10b] Name : âdisk2s1â
2007-11-03 09:59:05.842 Disk Utility[7896:10b] Size : 931,5 GB
2007-11-03 09:59:05.842 Disk Utility[7896:10b] Filesystem : Mac OS Extended (Journaled)
2007-11-03 09:59:05.868 Disk Utility[7896:10b] newfs_hfs: /dev/rdisk2s1: partition size not a multiple of 4K.
2007-11-03 09:59:05.875 DiskManagementTool[7897:10b] * Terminating app due to uncaught exception 'NSRangeException', reason: '[NOTE: this exception originated in the server.]
[NOTE: this exception originated in the server.]
[NOTE: this exception originated in the server.]
* -[NSCFString substringToIndex:]: Range or index out of bounds'
2007-11-03 09:59:05.877 DiskManagementTool[7897:10b] Stack: (
2498351723,
2516496539,
2498350481,
2487175270,
2487173129,
2498374346,
2498374450,
166599,
165830,
152358,
2487166563,
2497854334,
2497854776,
2487166389,
2487215828,
66120,
11390
2007-11-03 09:59:06.513 Disk Utility[7896:6377] DiskManagementTool has died. Disk Utility will need to be restarted.</pre>
Houston, we have a problem...
This happens on a very recent MacPro with plenty of memory, and the external hard drive is a My Book 1TB from Western Digital. Tried both interfaces, firewire or USB2 - same problem.
Apple, any idea? Will I be able to use my hard drive for time machine?
- Edouard

HL-DT-ST DVDRW GSA-S10N:
Firmware Revision: AP09
Interconnect: ATAPI
Burn Support: Yes (Apple Shipping Drive)
Cache: 2048 KB
Reads DVD: Yes
CD-Write: -R, -RW
DVD-Write: -R, -R DL, -RW, +R, +R DL, +RW
Write Strategies: CD-TAO, CD-SAO, CD-Raw, DVD-DAO
Media:
Type: DVD+R DL
ID: RITEK D01
Blank: Yes
Erasable: No
Overwritable: Yes
Appendable: Yes
Write Speeds: 2.4x
Disk Utility: Burn started, Mon Jan 28 19:53:05 2008
Disk Utility: Burning to DVD+R DL (RITEK D01) media with DAO strategy in HL-DT-ST DVDRW GSA-S10N AP09 via ATAPI.
Disk Utility: Requested burn speed was 47x, actual burn speed is 2.4x.
Disk Utility: Burn failed, Mon Jan 28 19:53:36 2008
Disk Utility: Burn sense: 3/0C/00 Medium Error, Write error
Disk Utility: Burn error: 0x8002006E The burn failed because of a medium write error.
Disk Utility: DVDRW GSA-S10N: SCSITask 86320.265625 CDB: Start/Stop Unit/Eject Media failed with service response = 1 (SERVICEDELIVERY_OR_TARGETFAILURE), status = 1 (TaskTimeoutOccurred)
Disk Utility: Retry #1
I am having this problem as well. Is there any way to get it resolved? This is a MacBook Pro 2.4 Ghz with a Santa Rosa chipset. I burned a DVD successfully almost a month ago:
Disk Utility: Burn started, Mon Dec 24 14:58:03 2007
Disk Utility: Burning to DVD+R DL (RITEK D01) media with DAO strategy in HL-DT-ST DVDRW GSA-S10N AP09 via ATAPI.
Disk Utility: Requested burn speed was 47x, actual burn speed is 2.4x.
Disk Utility: Burn finished, Mon Dec 24 15:39:16 2007
Disk Utility: Verify started, Mon Dec 24 15:39:16 2007
Disk Utility: Verify finished, Mon Dec 24 16:01:17 2007
Disk Utility: Burn started, Tue Dec 25 16:27:39 2007
Which is the same type of DL DVD. I am using Sony DL discs.

Finder reports all internal hard drives as zero kb, disk utility correct

After upgrading to 10.5.3 finder is reporting internal HD's as zero KB in size and will not allow files to be coppied to them. Very Bad. Disk utility reports proper size and utilization. Does anyone have suggestions of where to start. File permissions have been repaired, before and after OS upgrade. Upgrade done from download not software update.
Also USB subsystem appears to lock up occasionally disabling mouse and keyboard, both via ADC monitor and tower connections. Motherboard battery is depleted, though I thought this would only affect system time, could it be creating other issues?

I also just had this problem. jdisk reports 83gigs used of 300GBs, finder reports 299GBs used.

"media" in disk utility???

ive been having issues with internal SATA drives in all of my schools 15 macpro systems since running leopard through 10.6.7 for about a year. at least 1 out of each 3 internal SATA drives, excluding the system drive, will not mount and appear as, "media," in the disk utility. i have rearranged the slot order of the drives and that is a temporary fix with the drive not mounting again within a few days. however, i can pull that drive out and put it in one of our lacie 4tb external bays and they work like a charm, 6 months and still going. why would a drive fail in the macpro but perform flawlessly in an external case? what does it mean when a drive appears as,"media," and verify or repair fails plus the size no longer is registeted by disk utility?

the size no longer is registered by disk utility?
That is a very strong indicator of a drive that has failed. If the drive controller cannot reliably report the drive size/capacity, the drive may have died. Without the drive size/capacity, the drive cannot be repaired.
But reporting the size/capacity in an external enclose should be no different from the size/capacity reported in an internal drive bay. The only difference is the alignment of the connectors, which is strongly influenced by the sled.
Are you using the correct sleds? They changed with the 2009 model.
Are you meticulous about inserting them so that they are correctly captured in all the metal tangs inside the Mac? Being sloppy might **** the drive at an angle.
Are the kids pulling them out and playing catch with them? Stranger things have happened.

Disk Utility crashes attempting burn .iso

I'm a very new user of a PPC G4 that I came across and have no experience of these machines. It's running OS X 10.3.9. I've installed Ubuntu with dual boot on a separate drive OK but had to burn the Ubuntu .iso installation CD on a system running XP. Articles I've read tell me that Disk Utility should be able to do this by dragging the file name into the left pane and selecting Burn. This works OK with a .dmg file but when a .iso file is used (any .iso, not just Ubuntu) Disk Utility crashes with an unspecified Internal Error. The CD burned form the .dmg does not boot, so is of no use for installation purposes. Any help appreciated.
John

You may be able to use a simple Burn utility that makes
either CD or DVD media recordings on blank media for
use in either Mac &/or PC format. Not sure if one can
simply use a utility such as this:
• Burn - home:
http://burn-osx.sourceforge.net/Pages/English/home.html
• CharlesSoft - has an app called BootCD that may work:
http://www.charlessoft.com/
• How to create a Bootable CD in Mac OS X - FAQ:
http://www.index-site.com/bootcd.html
There are limitations and some restrictions, after a fashion,
that slow the idea of making a copy of a Mac OS install disc.
+(Copyrights, end-user-rules, conditions of use, etc will apply.)+
That is another matter; one method includes Disk Utility, &
for large size systems, a Dual-Layer DVD recorder is needed.
To make a workable copy of your non-Mac unix OS disc
and have it be a bootable copy. The format of the media
has to be correct. As does the method of copying an image.
Some kinds of items require making a Clone, not an Image.
There are some rules to make a copy of an OS disc bootable;
even so, the rules for a non-Mac system could be different.
Hopefully some ideas of how to accomplish the task can be found.
Good luck & happy computing!

Disk Utility -- Smallest (minimum) partition size

I viewed an earlier discussion on this topic that was answered incorrectly, but I couldn't add this information to it because it had already been archived. However, I was unable to find it anywhere else on the web, so I thought it important to get on the record.
Disk Utility in Leopard DOES enforce a minimum partition size. It is 1GB.
This is documented in the Apple Service Training course "Leopard Tools and Techniques."

V.K. wrote:
it looks like DU will not allow you to create a partition smaller than one tenth of the disk size.
when i do it on a 200GB drive the smallest size it let's me make is 20Gb, and for a 500GB drive it's 50GB.
I guess that's a safeguard against creating too many partitions.
Message was edited by: V.K.
I thought so. Like most filesystems, all the information must be stored in the bootsector or whatever it's called with BSD, and the total number of files is related to the sizes and total numbers of partitions, so like FAT32 or even NTFS, HFS has it's practical and theoretical limits.
I believe HFS has two bootrecords or equivalents, one for backup and this adds to the storage space issue.
Going back to the old 1.44MB floppies, the unformatted size was over 1.7 MB and Norton and MS took advantage of that, but not all disk readers were happy with what they did. MS once shipped Windows on a set of 1.7 MB floppies. Of course this was BC (before CDs).

Disk utility fails to resize portable drive partitions with error message "requested change in size is too small".

I am using a 1TB WD studio passport portable drive with my 2011 MacBook Pro. I have the portable drive partitioned into 4 volumes: 355 GB, 320 GB, 320 GB, & 4 GB. But Disk Utility won't allow me to split the third of those into 160 GB /160 GB. All volumes verify as seeming "to be okay". Seems if Disk Utility could create me a 4GB partition that 160 GB is plenty big enough, right? Something's not right; Can you help me with this please?

What is on those partitions and or the partition you want to split in two?
If you don't have any data on partitions or if you can save it someplace else for the time being then why not just Re-Partition the whole drive into the sizes you now want.

Disk Utility - minimum diskimage size

Similar Messages

Maybe you are looking for