Disk image on RAID 2 X 2TB

Hello
Does anyone know whether I can create 2 separate disk images on each of the slice of a 4TB hard drive?
When I create a 3TB disk image on a 4TB with 2 RAID slides, there are serious speed issues. Therefore am wondering whether I can create a:
1 TB Disk Image on one of the 2 TB Raid Slides, and one 1 TB Disk Image on the other slice?
I'd like one of the Disk Images to be encrypted as well.
if there is a way of targeting where the disk image goes it would be greatly appreciated.

starbux48 wrote:
I would like to upgrade finally to OS X Lion. Before I do that I would like to make an image backup using something like Super Duper to an external USB 2.0 disk drive. I would like this to be a bootable image. Can I do this?
Yes, although I recommend the more intelligent Carbon Copy Cloner over Superduper just for the fact that it was first, more powerful and donationware, SD might be eaiser and offer more handholding, it's part payware.
http://www.bombich.com/get_ready_for_lion.html
You can also make a Snow Leopard boot USB key and copies of your SL disk
http://www.maciverse.com/install-os-x-snow-leopard-from-usb-flash-drive.html
http://www.walterjessen.com/make-a-bootable-backup-snow-leopard-install-disc/
You can also make a Lion boot USB key, disks
http://eggfreckles.net/notes/burning-a-lion-boot-disc/
http://blog.gete.net/lion-diskmaker-us/
http://osxdaily.com/2011/07/08/make-a-bootable-mac-os-x-10-7-lion-installer-from -a-usb-flash-drive/
I really do not recommend pre-2011 Intel Mac's (unless they are powerful, 4GB of RAM) to upgrade to Lion, however with a bootable clone of 10.6 (which is what your asking for) would get your machine back on 10.6 eaiser than a total rebuild and reinstall of 10.6.
Also a LOT of third party programs and older printer/scanner drivers/software/hardware may not work with Lion neither.
I do recommend to backup data off the machine, a fresh install of 10.6 then upgrade to 10.7, then install Lion programs and then return files method over the upgrade over 10.6 method.
To boot from the Carbon Copy Clone, hold th option key and select the external drive to boot from.
Good Luck

Similar Messages

Problems with Disk Utility backup & restore via DMG disk images

I attempted to backup and restore a 2TB external raid storage device using the recommended Disk Utility procedure for 10.6.6. One of the HDDs in the raid enclosure had started to fail.
First step was to create a new image from the 2TB device. I accepted the defaults of compressed image format and no encryption. The image took about 15 hours to create, and when complete, I was left with 2 files:
OWC2TB.dmg (1.1TB)
OWC2TB.002.dmgpart (486GB).
To check the DMG I ran the Disk Utility "Verify Disk" on the DMG, and got the message "The volume OWC2TB appears to be OK". The DMG is described in DU as:
Description: Apple UDIF read-only compressed (zlib)
Connection Bus: Disk Image
Total Capacity: 2 TB
Disk Write Status: Read Only
Partition Map Scheme: No partition map
I then replaced the failing HDD in the enclosure, recreated a new 2TB filesystem on the device, and attempted to restore from the DMG image.
The first attempt was to use Disk Utility "Restore" function. I specified the DMG as the source and the new device as the destination, and chose "Erase Destination". This failed immediately with the error "Restore failure. Could not find any scan information. The source images needs to be imagescanned before it can be restored".
After researching this error I tried to correct it by selecting the DMG in Disk Utility and running Images => Scan Image for Restore. This failed immediately, complaining there was insufficient disk space. More research revealed it needed the same amount of spare space on the same disk to do an imagescan. So I had to free up an EXTRA 1.5TB of space in addition to the space the DMG consumed. Not very user friendly.
The next attempt to imagescan the DMG got further than the "insufficient space" error. It displayed "Scanning image OWC2TB.dmg, Block Checksum Partition #1". This ran for about 10 hours. At the end, it displayed a new error message "Unable to scan OWC2TB.dmg (internal error)".
Next I tried to mount the DMG and copy the files manually. My first attempt at this resulted in a "Verifying..." phase which looked like it will take about 10 hours, so I clicked "Skip". Soon after I got an error message "Unable to attach OWC2TB.dmg (no mountable file systems).". Now I am trying a mount with the Verify option...
Can anyone suggest what I can try next to restore the DMG?
I think the problem might be the fact the DMG is split in two parts, but the imagescan/restore software does not know how to read the second part? Is there a way to join these into a single DMG?

I attempted to backup and restore a 2TB external raid storage device using the recommended Disk Utility procedure for 10.6.6. One of the HDDs in the raid enclosure had started to fail.
First step was to create a new image from the 2TB device. I accepted the defaults of compressed image format and no encryption. The image took about 15 hours to create, and when complete, I was left with 2 files:
OWC2TB.dmg (1.1TB)
OWC2TB.002.dmgpart (486GB).
To check the DMG I ran the Disk Utility "Verify Disk" on the DMG, and got the message "The volume OWC2TB appears to be OK". The DMG is described in DU as:
Description: Apple UDIF read-only compressed (zlib)
Connection Bus: Disk Image
Total Capacity: 2 TB
Disk Write Status: Read Only
Partition Map Scheme: No partition map
I then replaced the failing HDD in the enclosure, recreated a new 2TB filesystem on the device, and attempted to restore from the DMG image.
The first attempt was to use Disk Utility "Restore" function. I specified the DMG as the source and the new device as the destination, and chose "Erase Destination". This failed immediately with the error "Restore failure. Could not find any scan information. The source images needs to be imagescanned before it can be restored".
After researching this error I tried to correct it by selecting the DMG in Disk Utility and running Images => Scan Image for Restore. This failed immediately, complaining there was insufficient disk space. More research revealed it needed the same amount of spare space on the same disk to do an imagescan. So I had to free up an EXTRA 1.5TB of space in addition to the space the DMG consumed. Not very user friendly.
The next attempt to imagescan the DMG got further than the "insufficient space" error. It displayed "Scanning image OWC2TB.dmg, Block Checksum Partition #1". This ran for about 10 hours. At the end, it displayed a new error message "Unable to scan OWC2TB.dmg (internal error)".
Next I tried to mount the DMG and copy the files manually. My first attempt at this resulted in a "Verifying..." phase which looked like it will take about 10 hours, so I clicked "Skip". Soon after I got an error message "Unable to attach OWC2TB.dmg (no mountable file systems).". Now I am trying a mount with the Verify option...
Can anyone suggest what I can try next to restore the DMG?
I think the problem might be the fact the DMG is split in two parts, but the imagescan/restore software does not know how to read the second part? Is there a way to join these into a single DMG?

Trying to create a password protected disk image in 10.8.4

Trying to create a password protected disk image in 10.8.4. I follow steps in Apple:Support but I get an error saying "Resource busy"?

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, or by corruption of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and Wi-Fi on certain iMacs. The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

Disk Image Setup on Time Capsule

I currently use my 2TB Time Capsule as a backup for one laptop and for my iTunes media files (which I periodically back up to an external hard drive manually). I'm planning on adding my wife's laptop's backups to the mix and would like to reserve room for the growing folder of music plus other data files. After some research, it appears that the best way to keep Time Machine from filling all available space with backups from our computers would be to use disk images. I'm considering two different tactics:
1. Create a disk image with a capacity of, say, 1TB to which I'd move the library (I'm assuming that Time Machine will respect the capacity even if the image isn't full, right?). The issue I have with this is that I don't want it to affect how iTunes accesses the files wirelessly. Is there a particular way I should create the disk image so that iTunes simply access the files as it does now (i.e., no encryptions, passwords, turning into sparsebundle files, etc.), but also maintains the capacity in such a way that the backups won't encroach?
2. Keep the library in its existing folder on the Time Capsule, but create a bunch of empty disk images that will keep the sparsebundle backups from encroaching. I could then delete the empty disk images as the need for room increases in the library.
Any thoughts on the best way to do this, or on showstoppers I haven't thought of? Assuming either approach works, I'm also looking for advice on format, partition, and image format specifications for setting up the disk image(s) in Disk Utility. I'm assuming I can avoid the encryption/password problems by simply leaving encryption marked "none."

daveb74 wrote:
if I were going to use one of these drives as my primary iTunes media location, I'd either have to leave it plugged into the TC all the time or manually attach it every time I wanted to access those files. The former seems like a bad idea
Not really. Running constantly is one of the least-stressful things that a disk drive can do, much easier on it than regular starting and stopping.
Do you know of any reason why the disk image idea wouldn't work, specifically?
I wouldn't put your iTunes files into a disk image unless you were sure you were only going to mount that disk image from one Mac at a time. I'd expect the mounting of a read-write disk image on multiple Macs to cause trouble.
Putting empty disk image files on the Time Capsule disk would accomplish what you're trying to do (reserve space so that Time Machine doesn't consume it all), but that requires a fair amount of management on your part to monitor the space usage.
If you decide to go with disk images, be sure that you don't use a "sparse" variety. You want the type that initially reserves the entire amount of requested disk space.

Disk Utility Error 61 when attempting to create disk image on external driv

I would like to make occasional archive backups of my three macintosh computers. I bought a new Western Digital 2TB drive for this purpose, and formatted it as Mac OS Extended. Trying to do a disk image backup using Disk Utility, I follow the directions:
- Startup from an install DVD.
- Start Disk Utilities and select "Restore"
- Drag "Macintosh HD" into the Source box
- Click on "New Image" and select compressed and 128-bit AES encryption
This leads to the error message: Unable to create "....." (error -61)
I have enocountered this problem both with my iMac G5 and a MacBook, both running Leopard.
Does anyone know what this error means, what I am doing wrong, and/or if there is another way to create disk image backups? Help!

1. For reasons I don't know disc images seem to become more fragile the larger they get. They also can be subject to file corruption that affects the entire disc image, whereas file corruption on a clone would only affect certain files.
2. You cannot put multiple clones on the same volume. Each clone must be on a separate volume, but you can have multiple volumes on a single drive simply by partitioning the drive accordingly. Of course you need a drive large enough to accommodate each clone. Each clone should be to a space equal to the capacity of the cloned drive.
3. I'm not a big fan of TM, although I must confess it has become more reliable since it's release, especially with Snow Leopard. However, there are many backup utilities that can create clones, perform incremental updates, and archive changed files. See the following:
Backup Software Recommendations
Carbon Copy Cloner
Data Backup
Deja Vu
Silver Keeper
MimMac
Retrospect
Super Flexible File Synchronizer
SuperDuper!
Synchronize Pro! X
Synk Pro
Synk Standard
Tri-Backup
Others may be found at VersionTracker or MacUpdate.
Visit The XLab FAQs and read the FAQ on backup and restore. Also read How to Back Up and Restore Your Files.

Even after resets get "The backup disk image "/Volumes/FreeAgent GoFlex Drive/MacBeth (2) 1.sparsebundle" could not be created (error 22)."

HELP! "The backup disk image “/Volumes/FreeAgent GoFlex Drive/MacBeth (2) 1.sparsebundle” could not be created (error 22)."
TC estimates over 750GB for full backup.
Late 2010 MBA is connected wirelessly to
802.11n (1st gen) TC that is connected via ethernet hub built into house to motorola router using charter.com for internet.
I have had same problem for over 150 days and multiple reboots, restarts in proper order, firmware updates, unplugs with 5min plus gaps, bypassing the tc and using external 500gb WD mybook via usb to time capsule, replacement of the WD mybook to new 2TB Free Agent GoFlex drive, etc, etc, etc! Note: I originally named my MBA hard drive MacBeth, but at some point months ago, it said backup already existed and system automatically created MacBeth (2), worked for a while, then stopped again, despite trying nearly daily.
I gave up and started using Carbon Copy Clone daily for just the 128gb on internal SSD of my late 2011 11" MacBook Air, but need to get past these time capsule errors to back up the external disk! Due to lack of space in MBA, I had long ago transferred both itunes and iphoto and all imovie/fcpx files to a 1tb external disk (WD Passport) that I keep in my bag with MBA. It is partitioned with 150gb for cloning the MBA, and over 750gb for media/itunes/iphoto/etc.
Also, I have endured months of "your hard drive is full" messages and system lockups, applying the solution given to me by genious bar (deleting all aol.com outboxes/recovered messages/spam/trash under library/mail/V2/Mailboxes folders, empty trash, restart....watch recovered hard drive space mysteriously shrink next couple days to zero.....repeat)
Due to lack of space, I had not been able to do javascript and other system updates. Yesterday, I noticed even safari bookmark bar had mysteriously emptied (not disappeared, I can hide and show the space where the bar used to be - it is just blank area with no data except for eyelass-book-topsites icons), so I transferred a few large quicktime movie files recorded with isight camera to the external disk, and freed up 20 gbs for the first time!
This got my hopes up yesterday because after I completed all system/software updates, suddenly the bookmark bar showed up and I was able to start the time capsule backup! It took overnight preparing for backup, but finally started and progressed to 12gb of the 100gb+ needed (i guess the update where it left off months ago for the estimated 750gb for the full backup?), then I put system to sleep and took it with me (thus leaving the wireless time capsule network as I do daily fully expecting it to continue when I returned home in the evening.) But alas, upon return, back to the "Time Machine could not complete backup, The backup disk image ".....sparsebundle" could not be created (error 22)" Ugh! More reboots, unplugs, 5min gaps....still Ugh!
So the problem continues...please help! Here are my settings:
About this mac:
Mac OS X V. 10.7.5
processor 1.6 ghz intel core 2 duo, memory 4 4g 1067 MHz DDR3
software up to date!
Airport Utility:
V 6.2 (620.33)
both internet globe and TC show green dots in graphic, however internet occasionally shows yellow then goes to green, but still gets error 22. Suddenly TC showed explanation mark and says lost connection and asked if I wanted to 'forget', gave same errors, then mysteriously went back to green, but still got error 22!.
Internet:
connection: connected, displays router address, 2 dns server, and domain name: charter.com
Time Capsule:
shows network, ip address, serial number, version 7.6.3, status: (green dot) Setup over WAN,
wireless clients: phones, macbooks (including this MBA), printers, wii
If you need other settings to help me, just ask! I have read a few of the other solutions in forums, but trying not to erase disks, especially since it worked for a minute yesterday!

To step sideways.. why not just use CCC to backup the 750GB of the hard disk to the TC.
You need to understand this is going to be a super slow process and each time you stop it.. it is going to give issues. CCC will at least do a more reliable job of it than TM.
I would also say.. this is going to be tough without ethernet. You need to understand the backup speed over wireless can be 10GB per hour.. that makes 75hrs to backup the disk. The air needs to run non-stop doing that.. without you touching it.
I would get another external drive.. plug that into the MBA and if you really want to use TM.. make a backup one to the other.. but CCC will again do a better job and work faster. It will be much faster than over wireless.
I am trying to think of ways around the issue of just speed.. but plainly you have lots of other issues.. being the simple unreliablity of the TM to identify the TC.
If you want to make this work.. give yourself a weekend.
Load 5.6 utility into the MBA..
http://support.apple.com/kb/DL1482
Take the TC back to 7.5.2 firmware. It is a really old version and latest firmware does it no good at all.
Wipe its hard disk using erase and start over.. give it new names for everything.
So call it TC
Set the wireless to 5ghz and name it TC5ghz
Use WPA2 Personal security. Use a 10 character passkey non dictionary.
At 5ghz you should get 2x the speed as at 2.4ghz but the air will need to be right next to the TC..
(alternatively buy the USB to ethernet cord apple have available.. it is $30 in the apple store and do it over pseudoethernet. http://store.apple.com/au/product/MC704ZM/A/apple-usb-ethernet-adapter That is the wrong store but you get the idea. )
WIth a fully clean system.. now do a full reset of TM.
See A4 http://pondini.org/TM/Troubleshooting.html
Direct the TM to back to the TC.. and make sure the external hard disk is not excluded.
Of course the TC has to be 1TB version to fit that much data.. goes without saying right.
Even over pseudo - ethernet this will take many hours.. and you basically have to leave it to work.. do not touch it.. make sure the MBA cannot sleep though.. turn off sleep.. beforehand.

Quicktime disables one of the disks in my RAID 5 array.

Hi,
I have just installed ver 7.2 of Quicktime and after I began playing a Quicktime movie file one of the disks on my RAID array came up as failed. I have managed to recover this problem, but is there anything I can do to stop this happening again???... (apart from going back to XP )
Cheers,
Mark.

I just had the same problem. This is the second time I'm having this issue, the first time was when I installed Quicktime the first time a couple months ago, I don't remember which version it was (cannot remember if it was during the installation of the first file I played). I lost one of my drive in my RAID 0 or 1 (mirroring), fortunately I was able to rebuilt the image.
The second was few minutes ago when I was trying to play the HD trailer of Rush Hour 3. But this time my computer could reboot, my 2 drives was marked as failed!!! I was really scared to lose my data. Fortunately when I went in the RAID controller setup, it was able to find one of my drive and now the second one is rebuilding. The first thing I did when I rebooted was to uninstall that crap of quicktime and will never install it again.
My config: Vista Ultimate 64, motherboard Asus P5B Deluxe with Intel Matrix Storage. Quicktime 7.2 updated few days ago.

Disk Images and External Drives - PLEASE HELP

Hi all,
I've got to a point where i can't afford to keep buying expensive drives to work form with Final Cut Pro X so decided to just work from several high spec drives and then back them up on other cheaper drives, reformat the high spec ones and start again.
Not really understanding how disk imaging works I hoped I could carbon copy mountable and read and writeable drives (in this case a thunderbolt lace SSD) on to a cheaper mass storage, wipe it and start again. I hoped it would then appear on the drives top level just as the drive appears on my desktop, and that I could access it if needed or port it back to a single drive at a later date? Is this possible? Can anyone help? So far everything I've tried has failed.
One thought I did have was to create several partitions on the cheaper mass drive and duplicate it on to there? But I can't find any help or instruction for this online and need to make sure its write before I go deleting old projects.
Attached are a picture of what I have (the disk image file) and what I was hoping to create (a mountable replica of a working drive on an external HD)
Any help greatly appreciated.
Robin

You can research the terms disk image and back up for several hours. That might not help.
None of the back up routines I am aware for for video and large media files use any compression or bundling systems like .dmg. I think your best bet is to make one-to-one copies of your files to your cheap drives. If you need the older projects, you copy them back to your working drives. That's pretty much how it's always been unless you are have a nice NAS RAID with mirroring to another rack of drives.
The problem with cheap mass storage is no that it's unreliable. It's just not QUITE as reliable as more expensive systems. Having a copy of your work on a disk that might or is likely to fail is almost the same as not having a backup at all. but there is a point of diminishing returns for all of us in this business. This trend toward 4k and 8k, and FCPX's inability to manage media efficiently, means we all must add TB of storage for every project. A friend of mine includes a couple of TB drives in his fees. The client pays for and gets the drives.

Time Machine placing multiple disk images on Desktop

Hi,
I have recently set-up a 2TB Time Capsule for one of my clients.
Each time Time Machine does an hourly backup - it places a Disk Image icon on the desktop called e.g.'Backup of Anya' - which is basically the sparse disk image mounting from the Time Capsule on the Desktop temporarily whilst TM backs up to it - the problem however is the disk image does not auto-unmount when completed ...
An hour later it will mount another Disk Image backup on the desktop - and so on and so on and so on ...
by the end of the day there are close to 10 unmounted Time Machine backup disks on the desktop - and subsequently in each machines 'Devices' panel in the Finder - all across the network ...
Does anyone know why or how this is happening?
It's my understanding the the image should automatically unmount when TM has completed its hourly backup.
I'm stumped ...
See sample screenshot from my client ... https://idisk.mac.com/macfinger/Public//image002.jpg
MACFINGER

Start with Pondini's Tips and FAQs at the top of this forum.

Since upgrading to Lion, my time machine backups are failing - error message: The backup disk image "/Volumes/Jackie Scanlon's Time Caps/Jacqueline Drabczynska's MacBook.sparsebundle" could not be accessed (error -1). Any ideas?

Since upgrading my Macbook to Lion, the time machine backups are failing - error message: "The backup disk image “/Volumes/Jackie Scanlon's Time Caps/Jacqueline Drabczynska’s MacBook.sparsebundle” could not be accessed (error -1)." I have rebooted the TIme Capsule and it worked OK, but don't want to do that every time. Any suggestions? Thanks

Any new info on this?
I had the exact same problem and went crazy and spent a hecka lot of time trying to deal with my brand new 2TB Time Capsule and almost brand new MacBook Pro. Then I thought I fixed it...and I tried SO MANY things, I don't really know what did it...except taking out any apostrophe's in names of stuff that Apple puts in there...BUT...now it's back.
Grrr...

The backup disk image"/Volumes/TimeMachine/Macintosh.sparsebundle" could not be created (error-2).

Time machine problem. Backups from my 1TB imac 2009, to a 6 TB RAID configured MyBook Live Duo (3TB+3TB) will not work over ethernet cable. I have 800GB on my 1TB internal drive, have tried the option, command p+r and it does not work. Still get two error messages.
the backup disk image"/Volumes/TimeMachine/Macintosh.sparsebundle" could not be accessed (error-1).
and
the backup disk image"/Volumes/TimeMachine/Macintosh.sparsebundle" could not be created (error-2).
Please help.

Welcome to the Apple Support Communities
See > http://pondini.org/TM/C17.html

The backup disk image "/volumes/data/GuisselleiMac.sparsebundle" could not be created error null

Hello...
I just got my first 2tb TimeCapsule (TC). Unfortunately, it is not backing up!! I keep on getting the message "the backup disk image "/volumes/data/GuisselleiMac.sparsebundle" could not be created (error (null))"
I've looked in many websites but can't find a solution... I've tried re-setting the TC to original settings, turning my Mac off and on, changing the name of my mac, changing the name of my mac on the network, nothing works!!!
My TC is connected with an ethernet cable to a linksys router wich is connected to the cable modem, so it is in bridge mode. I have not connected the TC to my mac, I don't think this is necessary..
Can someone help me please!!!

My TC is connected with an ethernet cable to a linksys router wich is connected to the cable modem, so it is in bridge mode. I have not connected the TC to my mac, I don't think this is necessary..
Your TC is not directly connected to the Mac and unfortunately it does seem to matter.
The reason the TC fails is not entirely clear but it has to do with Mavericks.
Let me recommend you test what happens with the TC reset and plugged directly into the Mac by ethernet.
You will need to run it in router mode. Ignore all the errors and see if it now works.
The other suggestion is to manually mount the TC hard disk
First of all find it in the network via network utility.
Run netstat and get the current routing table.
Locate your TC on it.. On mine above it shows as tcgen4.local
So in Finder top menu.. Go > Connect to Server.
Type in AFP://TCnetworkname.local (exactly as it appears in netstat)
Or use the IP address.. the problem is that in your setup it is probably not fixed.
The current IP can be found by pinging the name. So ping in a terminal or in network utility.
ping tcgen4
ping: cannot resolve tcgen4: Unknown host
Note how you must use the full domain.
ping tcgen4.local
PING tcgen4.local (192.168.2.201): 56 data bytes
64 bytes from 192.168.2.201: icmp_seq=0 ttl=255 time=4.160 ms
64 bytes from 192.168.2.201: icmp_seq=1 ttl=255 time=3.742 ms
64 bytes from 192.168.2.201: icmp_seq=2 ttl=255 time=3.332 ms
64 bytes from 192.168.2.201: icmp_seq=3 ttl=255 time=3.785 ms
^C
--- tcgen4.local ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 3.332/3.755/4.160/0.293 ms
So you have now established the IP..
And type that in.
AFP://192.168.2.201 (or whatever shows).
Once you have mounted the disk .. delete the old Time Machine setup as per A4 in Pondini.. and set up again.
It should work.. but I strongly recommend a direct link to the TC.

Cannot create disk image in Disk Utility

I am trying to create a disk image of my macbook pro hard drive to an external firewire drive. The image starts, then I get an error that says "unable to create disk image: Input/Output Error"
I've verified both disks and permissions, but the image creation still fails. I've never had this happen before, and can't find anything about it. Any ideas?
Thanks,
-Jason

Glynn;
You're a genius - THANK YOU!!!!
I just wanted to backup my HD before I upgraded to tiger again .. had my main HD go flakey on me and had to resort to my back up jaguar drive - You're a genius and this worked for me .. as I got the device busy message as well. I figured it was because I was on my start up drive, but didn't have the extra OS drive anymore to switch start up disks to do this.
Thanx so much for your answer!!!
Try this. Open disk utility and highlight your
MacintoshHD(the one you want to copy). In the
options inside the
window(FirstAid-Erase-RAID-Restore) choose restore.
For the source--The Top field--Drag the highlighted
MacintoshHD to the source field.
Destination Field--Drag the image of your lacie
drive(Thats also in the side bar below your
MacintoshHD) to the destination field. click
restore....
g4 Mac OS X (10.3.9)

Creating FAT32 Encrypted Disk Image

I have a 2TB WD external hard drive and am looking to have half of the space used in such a way that it is password-protected and also can be accessed by both Macs and PCs.
I have tried the following:
Disk Utility
New Blank Disk Image
Size: 1TB
Format: MS-DOS (FAT)
Encryption: 128-bit AES encryption
Partitions: Single partition - Apple Partition Map
Image Format: read/write disk image
Received this error message:
"Unable to create "testname.dmg." (File too large)
ALSO:
Disk Utility
New Blank Disk Image
Size: 1TB
Format: MS-DOS (FAT)
Encryption: 128-bit AES encryption
Partitions: Single partition - Apple Partition Map
Image Format: sparse disk image
Received this error message:
"Unable to create "testname.sparseimage." (Invalid argument)
Thank you. Any assistance would be greatly appreciated!
AppleCare was unable to provide a solution.

FAT file system has partition and file size limits, which apparently you exceeded. I think the file size limit for a FAT32 file system is (2^32) - 1 byte.
See here for more info.
http://lmgtfy.com/?q=FATFile+SizeLimit

Use disk image as time machine backup volume

I have a large RAID array attached directly to my Mac via firewire (so it is not a NAS). Can I create a disk image file within that larger array, then mount that image as a disk, then use that as my Time Machine target? I see lots of discussion of doing this for NAS, but I cannot get TM to recognize a mounted disk image file as a TM backup volume. FYI, the reason for this is that I want to create a sparse image that limits the amount of space that TM will take, without eating up my entire RAID array, which is huge. Also, by tricking it into thinking it is another volume, TM will still let me back up other stuff on the RAID array to TM.

Thank you,
It's interesting to me that it will work if mounted as an SMB volume (at least according to many other posts). While I agree with you that it won't work, as I have verified that, I wonder if it could work if enabled (similar to the ability to enable unsupported network volumes).
A follow-on question: I would really like to have TM back up FROM a mounted network share to my TM database. I have a network SMB share with a lot of my data on it. I currently have to rsync it to an external drive in order to get TM to back it up. TM is set to ignore network volumes volumes. Interestingly, the SMB shares appear to get mounted on /Volumes instead of /Network, but that is aside, as both directories are set to be ignored by default. Anyhow, is there a way to turn that feature off and allow certain network shares to be backed up (and similarly blocked from back-up in the same manner that I do everything else)? Again, lots of posts out there about backing up TO a network share, but none tell me how to back up from a mounted network share to TM.

Disk image on RAID 2 X 2TB

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