OS X :: Converting Existing Startup Disk To RAID?
Jul 23, 2010
Having had an issue with 2 powercuts in quick succession meaning my Mac Pro was unbootable I am looking into the software RAID built into Snow Leopard. I know it doesn't replace backups and I got my data back ok from backups. My system disk is a 1GB drive, could I purchase a 2nd identical drive and mirror across that without having to do a system re-install? What would happen to the Bootcamp partition which is also on the same drive. Taking my thoughts one step further, if I bought 3 more 1TB drives, could I create software mirror sets, and then stripe across those, which should give me some performance and reliability gains?
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Dec 24, 2010
I have a Mac Pro that I want to create a mirrored RAID set in.
I have a 1TB Hard Drive that is the main system drive.
I just added a 2nd 1TB Hard Drive that I wanted to use along with this first hard drive to create a mirrored RAID set.
I used the following document to help with the process:
[URL]
I have opened up Disk Utility and think I may know how to do this but a few things concern me.
First, it states that it will erase the contents of the drives it's using to mirror. I had the idea it would simply duplicate the data onto the other drive. Is it true that it will delete the data on the current drive?
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Dec 7, 2007
Thinking of using 500GB and 750GB internal drives for a raid 0 startup disc (software raid obviously)?
Information:
Dual 2.5 G5
Mac OS X (10.4.11)
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Apr 11, 2009
I have a HD in my Mac Pro that is about 80% filled. I wanted to add another HD and configure the 2 as a RAID, Can I do this without reformatting the existing drive, or loosing my 80% capacity data?
The first HD is a 1TB and im looking to add an identical HD to make a 2TB drive.
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Apr 18, 2008
[URL]
I have an existing striped raid 0 setup with 2 x 500 GB hard drives.
I just bought 2 more x 500 GB hard drives since i noticed HDD is a bottleneck for my 8 core system.
my question is, can i add the 2 harddrives to my existing raid 0 partition ? (so i have one raid partition of 2 TB )
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Feb 27, 2010
I already have a 2x 1tb RAID 0 drive (totaling 2tb). I butchered my old XP machine and ripped out its 1tb drive.My question is, can I add a that old XP 1tb to the exisiting RAID 0 combination?Before you say, I triple backup all my files which are mainly photos so I am aware of the dangers of RAID 0.
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Nov 23, 2007
Is it possible to add a new 1TB drive to an existing concatenated raid(1TB+1TB)? and is there raid capacity limit, or it's unlimited?
Information:
G5
Mac OS X (10.4.10)
Dual 2.5 GHz PPC
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Feb 17, 2009
I currently have a DSL internet connection (static IP if that matters), and my iMac is connected to the network via an Airport Extreme, but am switching to Comcast Cable for better speed/price.
I picked up the self-install kit from Comcast yesterday and find the included instructions pretty much worthless.
Due to where cable outlets are located, I hope to install the new cable modem in a different room than my computer. However, will I first need to have the computer hard-wired to the Airport to configure the connection? Or should I be able to configure it wirelessly?
If wirelessly, should it be as easy as turning off the computer and Airport, connecting coax from the wall to cable modem, ethernet cable to the Airport, and then powering everything on? Will the iMac instantly recognize the new connection and walk me through configuration?
I am going from a static IP w/ the DSL to, I assume, a dynamic IP with the Cable. Does this further complicate the install?
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May 20, 2009
I have a new Mac Pro Quad 2.93 with the Mac RAID card installed with four 1TB drives setup in a RAID 5 array. When creating the volumes in the RAID utility, you can not edit them, resize, etc. If one large volume is created in the RAID utility, you can then partition that one volume using the Apple Disk Utility, which then allows you to resize if needed.
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May 28, 2012
How do I clean my start up disk for more space? I have I cloud but don't really use it.
Info:
MacBook Pro, Mac OS X (10.7.4)
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Oct 4, 2006
I have a PowerMac G3 running OS X Server 10.4.7. There is an 80GB ATA boot hard drive and a SATA card and two 250GB SATA drives. One SATA drive is existing and has data on it; I just installed the second one because I want to mirror the 1st drive onto the 2nd one.My questions are: how do I do it? When I try to create a RAID set in the Disk Utility GUI, it says all data will be destroyed. I cancelled that.So I tried diskutil enableRAID mirror disk1, which told me I could only mirror volumes.The volume name is RAID, so I tried diskutil enableRAID mirror /Volumes/RAID which gave me an error "Error enabling disk to RAID Could not unmount disk (-10000)"
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Aug 30, 2014
I have two G-Raid Thunderbolt RAID disks. Each is set up as a RAID 1 stripe (2 disks into one volume). I have my system disk encrypted with filevault, and would like to enable full disk encryption for the external disks as well. I tried the "Right click on disk in finder, select encrypt" option, but after I enter my choice of PW, I just get the error:
"A partition, not a whole disk, is required for this operation." Is this possible? Preferably, without formatting my disks all over again and enabling the encrypted FS at that time?
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Jan 29, 2010
I have a 1/3 full external drive that is currently formatted for MAC OS External.
I want to partition the drive in half and use the 2nd partition for Windows FAT32.
However, when I try to do this with Disk Utility it does not give me the FAT32 option.
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Nov 28, 2009
i took a dvd of a sports game my friend shot. I used mac the ripper to rip it to my computer. I got the video_ts folder. I want to convert it to a disk image.How do i do that?What program will let me do that? (free i hope)
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Feb 13, 2006
Formatting my new HDD today... noticed the RAID option in disk utility and found myself wondering what it is, why it is, and, perhaps most importantly, can I use it? I get that its a bunch of HDD's linked up but is that better/different than my three FW HDD's daisy chained together?
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Jul 7, 2008
i would like to reserve my 4th bay for windows only drive and a software raid will be used for these.
what would you think is a better set-up,
3x internal drives (all of the same model, probably WD 640's) set in raid 0 (both serve as boot drive and scratch disk) occupying bays 1, 2, and 3. In this set-up, everything (DVD's, music, photos, final cut media) would be stored on this array.
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Feb 18, 2009
Yesterday I switched on my macbook (Leopard) and got the flashing question mark. Ran all the resets and booted with disk utility which encountered an 'Invalid B-tree Node' when attempting to repair the disk. Additionally, the SMART status was verified.
I ran DW 4 last night, and performed the hardware tests which reported that the disk was operating like normal. The majority of my media files and additional work is backed up to my Time Capsule but I still have a folder of papers that are relatively new, and wanted to retrieve. While DW managed to reconstruct the majority of my drive (there seemed to be 15g missing - but it's just music files) including this folder, it couldn't replace the disk, as it encountered 'Serious Disk Malfunctions'.
So, via the Disk Preview I want to transfer my saved folders to my TC, but I don't appear to be able to locate it (via ethernet) through DW - even if it's connected when I boot up in DW. So, first request is: Can I connect to my TC to transfer across in DW's preview?
Second is: What are my options if DW can't replace? Do I need to take it into Apple and get a new HD (it's out of warranty)? It's possibly worth noting that I'm a student and have absolutely no money - so cost effective options are a bonus!
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Jun 24, 2014
I get this question mark along with a folder when starting up. I tried holding down the option key when turning on the power and then I get an internet recovery along with a globe. I click on the arrow below it and it takes maybe 15 minutes to start up. Then i get this disk utilities screen. I'm now unable to do anything. When going into disk utility, disk 0 shows with Mac OS X base system underneath it. All the clickable buttons are faded out. Is there something wrong with the hardrive? and where could i get this fixed? There isn't a warranty on it.
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Feb 28, 2009
I'm trying to repair my hard drive. I restarted from the OS X Mac Mini install CD (holding down the letter C when I heard the chime), opened Disk Utility from the Utilities folder, selected my hard drive image, but the "verify disk" and "repair disk" options are grayed out. I'm at a loss as to how to proceed.
Information:
Mac Mini
Mac OS X (10.5.8)
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Jan 1, 2008
I have 2 internal Serial-ATA disks:
Both were checked (with Disk Utility and DiskWarrior) and are OK. But only one of the two disks shows in the Startup Disk list in System Preferences->Startup Disk.
PowerMac G5 / OS X (V.10.4.11)
3GB memory
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Jul 1, 2014
Every time I try to restart my computer on my Hard Drive I get this message "Startup disk could not gather enough information on the selected disk". As of right now I am running my whole computer off of a 16GB flash drive that is quickly running out of memory. How do I fix my Hard Drive without losing all 150GB worth of data. I am running off of OS X 10.6.8 and have another iMac that is working fine.
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Feb 22, 2010
I ran installer then went to disk utility and pushed disk repair. it ran and indicated in green that no repairs were necessary. i then went to startup disk and only the Diks and network startup showed up but no hard drive. i also open computer to make sure was not wet muddy due to leak in cooling system but all was dry
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Jun 7, 2012
I am getting this warning. Not sure what to do or how to do it. Couldn't find any information on freeing space without erasing important files.
Info:
Mac Mini, Mac OS X (10.5.6)
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Dec 9, 2009
I just got a 2nd caviar black 1tb and I'm goin to be setting up raid with another drive.. I have data on my current 1tb which is backed up with time machine. what do I have to do to get the drives workin in raid? I'm lookin to have a faster write speed since I need the raid setup. Since I will be using the 2 drives for my data and a photoshop scratch disk, should I create a partition for the scratch disk? I've seen some say yes.. Some that said no but without reason.What r the pros/cons to partitionin the drive?
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Jul 5, 2012
I have a Mac Mini that I plan to use as a simple file server with a 2TB external disk. I would like to be able to add future external disks to grow the original 2TB volume I create to 4TB, 6TB, etc. using RAID.
I know it is possible to add disks to a concatenated RAID set without destroying the data on the disks already in the set, but I cannot get Disk Utility to let me create a single-disk concatenated RAID set.
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Jul 11, 2010
I have a couple of questions regarding backing up my external drive. I've got a 2TB external drive with about 1.5TB of movies, Music etc. I've got another identical empty drive that I want to keep a backup of the first drive on. So my question is what is the best way of backing up this data? I thought of using disk utility(I'm running snow leopard 10.6.4 if that makes any difference) to created a mirrored RAID set. If I plug in the empty drive then create the RAID set will my first drive get wiped when the set is created? or with it leave the data on the first drive intact? Or should I just use something like crashplan to backup to the 2nd drive?
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Jun 20, 2012
I have just finished setting up my first Lion Server from scratch on a Mac Mini with dual 500GB Drives which I set up as RAID 1. I have the server exactly as I want it, and before the users start logging on and it gets all screwed up I would like to create a disk image of it so that I could reinstall if necessary w/o having to start from scratch.
Is the process of creating a disk image for a RAID 1 any different than that of a disk image from a single drive set up? Will Disk utility just see this as a single volume or will it want to create a disk image of the entire RAID? i.e will the disk image be 1 TB (500 GB x 2)? And when it comes to reimaging my RAID, will I just recreate a RAID 1 and be able to write to it from that disk image?
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Sep 10, 2009
Apparently, there are two ways to convert disk images in CDR format to ISO format:
1. Rename diskimage.cdr to diskimage.iso
Or
2. hdiutil makehybrid -iso -joliet -o diskimage.iso diskimage.cdr
The first method is really quick while the second method takes quite a long time. Do the two methods yield the same ISO file? In particular, I would like to convert a bootable CDR disk image to an ISO disk image.
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Jun 1, 2010
I've got an old powerbook g4 that I'm looking to sell, however before I do I want to clear everything off it. Unfortunately the disk drive is broken so I'm unable to erase disk using the installation disc which I know would be the easiest way... does anyone else know of an effective way to clear everything in this case? As I know that there will still be things left even after I've cleared all of my documents.
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May 16, 2007
I have a PowerMac G5 and need to purchase an internal RAID card to create a RAID 1 mirror of the system drive... one that will allow me create a Hardware RAID 1 mirror, not software RAID through OS X.
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