Boot with software RAID0

Hi Everybody,
is it possible to boot my Mac Pro with two SSDs that are in a software RAID 0 array?
The specs of the SSDs are: write 285MB/s, read 275MB/s. Would there be any increase in speed, or is the software RAID limited to some amount?
cheers, Mike

Your Mac Pro uses a chipset that is limited to 1GB/sec and even one 3Gbps interface (300MB) can only use about 250MB/sec
But... yes it works and you should see an improvement.
Some people put SSDs in optical drive bay (lower) so that they can use the other bays.
http://macperformanceguide.com/SSD-RealWorld-SevereDuty.html

Similar Messages

IMac won't boot with install CD with gray screen

A couple of weeks ago I turned on my computer and couldn't get past the gray screen (with no Apple logo). I couldn't boot in safe mode, and had to boot with software install disc. I recently had to unplug my computer for a move and when I turned it on I had the same problem. Unfortunately after resetting PRAM nothing happened, and I couldn't boot in safe mode. Then I tried booting with disc pressing C during startup, and it sounded like the disc was reading ( I could hear it spinning), but I still had nothing but a gray screen. Also tried booting with recovery disc that comes with Apple Protect Plan and couldn't get past gray screen. After I leave the computer on for a couple of hours I get the folder with question mark flashing. Can anyone help?

den.thed,
Thanks. I tried the sleep method, but if I were listening to music through my Apple TV or was watching multiple movies, the IMac would shut down or go to sleep after 3 hours and sometimes that became a real bother. I have a HD with just my music from ITunes on it and then I have a new 1 TB HD that I have nothing but movies on it. Those are the 2 I want to leave on at all times, but the machine would freeze if I had both plugged in. Thanks!

HDD Software RAID0 with WDC WD2500JS

Hi all
Since my Quad was factory fitted with a WD2500JS Desktop class HDD, i bought a second one of that type, initially for backup purpose.
Now i want to configure them for software RAID0 (since i got another FW800 drive for backup) and read about WD's built-in error recovery functions.
http://wdc.custhelp.com/cgi-bin/wdc.cfg/php/enduser/stdadp.php?p_faqid=1397&p_created=1131638613&p_sid=NpquRgji&p_lva=&p_sp=cF9zcmNoPTE mcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9NSZwX3Byb2RzPTAmcF9jYXRzPTAmcF9wdj0 mcF9jdj0mcF9zZWFyY2hfdHlwZT1hbnN3ZXJzLnNlYXJjaF9mbmwmcF9wYWdlPTEmcF9zZWFyY2hfdGV 4dD1UTEVS&p_li=&ptopview=1
It says the HDD can drop from an hardware array because of a timeout for error recovery the drive takes, and i wonder if the same could happen to the software RAID?
My last experience with apple s/w RAID in a G4 DA was not doubled performance only equal - because both HDDs were on a sinle channel -
but in the Quad this should gain well, if both SATA channels are independent, are they?
I sure will try this...
btw. does the s/w stripe divide two parallel write requests to each one of the HDDs (like h/w does)?
I'd like to forget about all this low-end stuff, if someone could point me to a PCIex SCSI (-RAID) hostadapter for G5 or a reasonable SATA one.
thx
Link
G4 (DA) & G5 Quad Mac OS X (10.4.7)

Might want to find a way to shorten the url so it is a "tiny url" or bracket it.
TLER has been discussed. Is only implemented on reads, and not an issue that I have ever seen or heard, despite the "warning" message... in fact, WD has had trouble with true 'hardware RAID' and issued firmware updates to correct problem back first of the year.
There are external eSATA drive enclosures, PCIe controllers. Sonnet and others for controllers and cases - you can find excellent reviews and tests over on http://www.amug.com
And yes, your two internal SATA drives are on their own independent channel.
You will find stripped RAID using Apple s/w to be fine today, each file is segmented and written to the drives in the array. There is always some overhead but you should see nearly 2x in most applications.

Internal HFS software RAID0 causes native Windows 7 to BSOD

Hi, all!
I've got a late 2010 8 core Mac Pro, with 4x1TB drives installed internally.
Drive 1 has OSX (SL) and a Windows 7 partition, as created by Bootcamp Assistant.
Drives 2-4 are a software RAID0 stripe array formatted HFS for video media storage.
I also have a 2TB external Lacie FW800 drive that is partitioned half HFS for Time Machine, half ExFAT for interchange between the 2 OS's.
I also have Parallels Desktop installed.
I find that when I run Windows 7 through Parallels, everything seems fine. My OSX home folders & the external HFS partition appears in Windows. The stripe array doesn't, which is a pity, though i do see the drives in the Drive Management tool.
However, when I boot natively into Windows 7, I get a BSOD.
I've done a ton of research online but can't find any information at all!
Can anyone please help?
Regards,
Phil

You again!
I found out, after posting, what the BSOD actually said, as I figured it'd be important... But then I found that I couldn't edit my original post! Rubbish!
Anyway, it was a Cache Manager problem. Adding that to my Googlings led me to discover that the AppleHFS driver in Windows 7 doesn't like striped HFS RAID arrays. By renaming the AppleHFS.sys to AppleHFS-disabled.sys file in the \windows\system32\drivers folder, my machine doesn't crash anymore.
Of course, I can't access ANY HFS volumes now, which *****.
This appears to have been a problem since 2009, but Apple don't seem to want to fix it. I'm currently downloading a 10 day trial of an "HFS in Windows" driver from Paragon Software. I'll report back my findings...

Can I dual boot with MAC OS/X and Windows

What is the best way to configure a dual boot on my MAC Bookpro laptop? Also, can I dual boot Windows 8 and MAC OS?

The first alternative is a dual-boot arrangement between OS X and Windows provided with OS X.
Windows on Intel Macs
There are presently several alternatives for running Windows on Intel Macs.
   1. Install the Apple Boot Camp software. Purchase Windows
         XP w/Service Pak2, Vista, or Windows 7. For Boot Camp
         4.0 and above you can only use Windows 7 or later. Follow
         instructions in the Boot Camp documentation on
         installation of Boot Camp, creating Driver CD, and
         installing Windows. Boot Camp enables you to boot the
         computer into OS X or Windows.
     2. Parallels Desktop for Mac and Windows XP, Vista Business,
         Vista Ultimate, or Windows 7. Parallels is software
         virtualization that enables running Windows concurrently
         with OS X.
     3. VM Fusion and Windows XP, Vista Business, Vista Ultimate,
         or Windows 7. VM Fusion is software virtualization that
         enables running Windows concurrently with OS X.
     4. CrossOver which enables running many Windows
         applications without having to install Windows. The
         Windows applications can run concurrently with OS X.
     5. VirtualBox is an Open Source freeware virtual machine such
         as VM Fusion and Parallels that was developed by Solaris.
         It is not as fully developed for the Mac as Parallels and VM
         Fusion.
Note that VirtualBox, Parallels, and VM Fusion can also run other operating systems such as Linux, Unix, OS/2, Solaris, etc. There are performance differences between dual-boot systems and virtualization. The latter tend to be a little slower (not much) and do not provide the video performance of the dual-boot system. See MacTech Labs- Virtualization Benchmarks, January 2013 | MacTech for comparisons of Boot Camp, Parallels, and VM Fusion. Boot Camp is only available with Leopard or Snow Leopard. Except for Crossover and a couple of similar alternatives like DarWine you must have a valid installer disc for Windows.
You must also have an internal optical drive for installing Windows. Windows cannot be installed from an external optical drive.

Boot camp Software in vista x64

I am running vista x64 on a 1.1 Mac Pro. The OS runs just fine but I would like to have all of the boot camp software running. Is there anyway to do this?

If you have 10.5.6 DVD, you can install some non Apple Boot Camp drivers. You actually need the set that came with the 2008 Mac Pros.
OSSwitcher and TimeServices are the only real items I can think of you would not have.
Or wait for Windows 7 - you can download it today - and hope.

Missing Mac OS X Lion Boot Camp Software drivers

Dear Community,
Having just completed a smooth installation of Windows 7 on my 2011 Macbook Pro, I was quite surprised to see that the wireless and ethernet connections didn't work. The computer did not even find any possible connections and I'm missing Wireless Adaptor or any such sort of devices in the device manager.
Now, my first bet is that I'm missing a driver installation. So after having looked on the internet for some guidance on where to get the drivers, it comes down to me using the installation DVD that's included in the package in which the mac came. But no such DVD came with the package, since Apple has decided not to ship physical DVDs anymore.
So my question is, how do I get these drivers?
I see under //support.apple.com/kb/HT4818#12 that the Atheros 802.11 Wireless, Broadcom Wireless and Marvel Yukon Ethernet are all drivers included in the Mac OS X Lion Boot Camp Software, but then why don't I have them then?
Many thanks for the, hopeful, fine answers!
Best regards,
Tim

But everything else got installed and hardware abstraction, Boot Camp control panel and other drivers and services are now present and running?
surprised to see that the wireless and ethernet connections didn't work. The computer did not even find any possible connections and I'm missing Wireless Adaptor or any such sort of devices in the device manager.
Usually you need to establish a wired connection.
And it is a problem for some, definitely.
Boot Camp 4.01 or later will enable those devices but you may still need to find appropriate drivers too. I don't know why but audio and graphics are also issues that the user needs to attend to and is not 'spelled out' that you will need those as well.

Dv2941se hard disk no boot with error Err2Err3

On my dv2941se laptop with AMD 64 x2 TK-57,4096MB total Memory Bios versionF.26 Running Vista 64 bit home premium.
When I turn on to boot I get the HP screen with function keys and then goes to black screen with cursor in upper left corner. When boot with esc I get memory passed, System Bios shadowed, Videobios shadowed, ATAPI CD ROM: HL_DT_ST DVD RAM GSA-T2ON, Fixed disk 0 Samsung HM250JI, Mouse initialized, and then full black screen and Err2Err3 appears in upper left corner and that's as far as the show goes. Will not boot any further no matter how long it's on. Any key I touch will repeat this error. When I boot up with my backup CD to perform an image backup which has been done up to the point that I can't boot anymore shows on the hardware screen that my hard disk C: is full. The D: drive that has the rescue for Vista and the small X:sector for boot looks like the number of sectors has not changed. Since this is OEM Vista I have no way to access C; in order to do a file check, or reformat is out. I cannot copy my latest backup because all sectors are written and the backup bombs. Not that familiar with Vista, is there anything I can do from here? I have no idea what is on each of the included 17 "installation "disks or will the last link of emergency " restore to factory conditions" (last resort) even going to work or has my hard disk turned to toast? I was doing a Microsoft software update at the time that this happened. I am on landline so it takes hours to do an update and I just let it run overnight to load the upgrades if it is more than 5MB in size. Phone line will give me 1.96 KB/sec. Someone please let me know how deep a dilemma I am in and how to possibly dig myself free. Thanks in advance.

@elmozzar
Enter BIOS setup by tapping/holding the F10 key immediately after powering on the laptop.Use Diagnostics to test your hdd.
******Clicking the Thumbs-Up button is a way to say -Thanks!.******
**Click Accept as Solution on a Reply that solves your issue to help others**

I bought a new mac with software installed and my username will not update from another account?

I recently bought an new power mac with Logic Pro and Final Cut Pro Installed.
When I updated to the new OS X operating system, they need to be updated as well. And will no longer work.
But it says it is on another account. Not sure what account. How do I find out what account they are on? How or can I do I move them into my other account?
The Power Mac is registered to the account I am logged in on.

Before buying a second-hand computer, you should have run Apple Diagnostics or the Apple Hardware Test, whichever is applicable.
The first thing to do after buying the computer is to erase the internal drive and install a clean copy of OS X. You—not the original owner—must do that. Changes made by Apple over the years have made this seemingly straightforward task very complex.
How you go about it depends on the model, and on whether you already own another Mac. If you're not sure of the model, enter the serial number on this page. Then find the model on this page to see what OS version was originally installed.
It's unsafe, and may be unlawful, to use a computer with software installed by a previous owner.
1. If you don't own another Mac
a. If the machine shipped with OS X 10.4 or 10.5, you need a boxed and shrink-wrapped retail Snow Leopard (OS X 10.6) installation disc from the Apple Store or a reputable reseller—not from eBay or anything of the kind. If the machine is very old and has less than 1 GB of memory, you'll need to add more in order to install 10.6. Preferably, install as much memory as it can take, according to the technical specifications.
b. If the machine shipped with OS X 10.6, you need the installation media that came with it: gray installation discs, or a USB flash drive for a MacBook Air. You should have received the media from the original owner, but if you didn't, order replacements from Apple. A retail disc, or the gray discs from another model, will not work.
To start up from an optical disc or a flash drive, insert it, then restart the computer and hold down the C key at the startup chime. Release the key when you see the gray Apple logo on the screen.
c. If the machine shipped with OS X 10.7 or later, you don't need media. It should start up in Internet Recovery mode when you hold down the key combination option-command-R at the startup chime. Release the keys when you see a spinning globe.
d. Some 2010-2011 models shipped with OS X 10.6 and received a firmware update after 10.7 was released, enabling them to use Internet Recovery. If you have one of those models, you can't reinstall 10.6 even from the original media, and Internet Recovery will not work either without the original owner's Apple ID. In that case, contact Apple Support, or take the machine to an Apple Store or another authorized service provider to have the OS installed.
2. If you do own another Mac
If you already own another Mac that was upgraded in the App Store to the version of OS X that you want to install, and if the new Mac is compatible with it, then you can install it. Use Recovery Disk Assistant to prepare a USB device, then start up the new Mac from it by holding down the C key at the startup chime. Alternatively, if you have a Time Machine backup of OS X 10.7.3 or later on an external hard drive (not a Time Capsule or other network device), you can start from that by holding down the option key and selecting it from the row of icons that appears. Note that if your other Mac was never upgraded in the App Store, you can't use this method.
3. Partition and install OS X
a. If you see a lock screen when trying to start up from installation media or in Recovery mode, then a firmware password was set by the previous owner, or the machine was remotely locked via iCloud. You'll either have to contact the owner or take the machine to an Apple Store or another service provider to be unlocked. You may be asked for proof of ownership.
b. Launch Disk Utility and select the icon of the internal drive—not any of the volume icons nested beneath it. In the Partition tab, select the default options: a GUID partition table with one data volume in Mac OS Extended (Journaled) format. This operation will permanently remove all existing data on the drive.
c. An unusual problem may arise if all the following conditions apply:
          OS X 10.7 or later was installed by the previous owner
          The startup volume was encrypted with FileVault
          You're booted in Recovery mode (that is, not from a 10.6 installation disc)
In that case, you won't be able to unlock the volume or partition the drive without the FileVault password. Ask for guidance or see this discussion.
d. After partitioning, quit Disk Utility and run the OS X Installer. If you're installing a version of OS X acquired from the App Store, you will need the Apple ID and password that you used. When the installation is done, the system will automatically restart into the Setup Assistant, which will prompt you to transfer the data from another Mac, its backups, or from a Windows computer. If you have any data to transfer, this is usually the best time to do it.
e. Run Software Update and install all available system updates from Apple. To upgrade to a major version of OS X newer than 10.6, get it from the Mac App Store. Note that you can't keep an upgraded version that was installed by the original owner. He or she can't legally transfer it to you, and without the Apple ID you won't be able to update it in Software Update or reinstall, if that becomes necessary. The same goes for any App Store products that the previous owner installed—you have to repurchase them.
4. Other issues
a. If the original owner "accepted" the bundled iLife applications (iPhoto, iMovie, and Garage Band) in the App Store so that he or she could update them, then they're irrevocably linked to that Apple ID and you won't be able to download them without buying them. Reportedly, Mac App Store Customer Service has sometimes issued redemption codes for these apps to second owners who asked.
b. If the previous owner didn't deauthorize the computer in the iTunes Store under his Apple ID, you wont be able to authorize it immediately under your ID. In that case, you'll either have to wait up to 90 days or contact iTunes Support.
c. When trying to create a new iCloud account, you might get a failure message: "Account limit reached." Apple imposes a lifetime limit of three iCloud account setups per device. Erasing the device does not reset the limit. You can still use an iCloud account that was created on another device, but you won't be able to create a new one. Contact iCloud Support for more information. The setup limit doesn't apply to Apple ID accounts used for other services, such as the iTunes and Mac App Stores, or iMessage. You can create as many of those accounts as you like.

Can't Safe Boot with 10.6.2 and GTX 285

Can't safe boot with 10.6.2 and NVIDIA GTX 285 (2009 Mac Pro).
What the heck am I supposed to do, take out the graphics card every time I want to safe boot?!
Suggestions please!

No, I think what it is, is that the GTX 285 drivers somehow are being treated as 3rd party extensions not to be loaded on a safe boot, but the problem is that without those drivers, even if I switch my monitor over to my GT 120 card, it still won't boot. Ugh.
I am considering reinstalling 10.6 over on top of my current system, then putting the 10.6.2 on top of that. If I do this, do I risk losing any preferences or having to reinstall any 3rd-party software? At this point, I'll happily reinstall whatever it takes... I just didn't want to have to do a clean system where I have to track down every single bookmark file and saved preference for my main apps, but it could be this is now starting to take more time than it simply would have to do that from the get-go. Sigh.

Powermac G4 will not boot from CD with OS10 install BUT will boot with OS 9

I have a Powermac G4 which had been running OS 10.38 or 39. The system on start up would sound the tones, the grey screen with Apple logo displays and the rotating clock at the bottom of the screen ultimately freezes and nothing more happens.
I presume that the hard drive is either smoked or corrupted so I buy a replacement drive and Tiger, and go through the following steps:
I disconnect the old drive and try to boot my g4 with Tiger install disks. The start up freezes in the same way as with old disk.
I find my old Panther install disks and the system freezes in the same way.
I then use my 9.2 install disk and the system boots and I get cannot see my new drive.
I disconnect my new drive, reconnect my old drive and re-boot with 9.2 and find my old drive mounts. Big Smile but...
here is the question:
Since I apparently have a still functional drive, why won't my install CD for Panther or DVD for Tiger not boot this system???? I do have a panasonic DVD/CD writer which is aftermarket if that might be the issue. If so would re-installing the apple CD player make a difference?
(I have also zapped the PRAM)
I am on the way out to try and find a copy of disk warrior to try and salvage my old drive. All help would be appreciated.
PowerMac G4 Mac OS X (10.3.9)

I had a really weird problem that might be something like you're experiencing. I was trying to get Tiger onto a "Yikes" PCI G4, and it would not boot up with the Tiger disk.I did everything I could come up with, and no luck. I spent a good bit of time here and over at macosx.com, and no one could figure it out. I finally just re-installed 10.2.8 on a partition, and for some unknown reason, the computer booted with the Tiger disk, and I was able to install. I let the people on the boards know it, but didn't go back to tell them what happened the next day. When I tried to restart, it would only boot into OS9. If I tried to force Tiger (like by choosing it as start-up) it would go to a black screen. Anyway, it ended up no go. If you'd like to go through all the things I did, here's the link to that thread:
http://macosx.com/forums/mac-os-x-system-mac-software/272035-cant-install-tiger- g4-pci-yikes.html
I would still like to know if there's some reason some "Yikes" models just can't deal with Tiger.
iMac IC2D 2.16GHz. TiBook 1Ghz, Sawtooth w/1.2 GHz owc upgr Mac OS X (10.4.6) 60GB Video iPod, 1GB ipod Shuffle

Kernal Panic after Boot Camp Software update

Hey all here is my dilemma,
I have a MBP 15' 2.66GHZ i7 8GB Ram etc...
Few days ago my internal drive would not boot; So I went to the apple store and they 'determined' that it was the logic board through a very sketchy process of elimination. In the end my logic board was replaced.
On the next day I decide to finally set up boot camp (Big Mistake). Everything goes fine up until I decide to download - Boot Camp Software Update 3.2 for Windows 64 bit. After installation I was prompted to restart my computer after which it booted into Mac and Kernel panic ensued along with the gray screen.
Windows partition works fine, I was unable to boot from CD, tried PRAM reset, Could not safe boot. Target Disk mode formatting the hard disk and then reinstalling Mac OS was successful in reinstalling the OS, but it still does not boot.
Now I am stuck with Windows 7 working and Mac not booting stuck at apple no spinning wheel.
Please help, I really do not know what do to.

Bump

ESXi6.0 Host, WIndows 7, only boots with 1GB RAM

Hi gang,
I converted a physical Win7 machine for use on my ESXi 6.0 sever and it created the machine just fine. I added a second disk to the server and moved the VM files to that disk, removed it from the inventory, and then added it back. The VM was originally configured to use 4GB RAM. However, when I power on the machine, the console window stays black and Windows never boots. With some trial and error, the only way I was able to get the VM to power on and boot was if I changed its settings to only use 1GB RAM. There is 8GB RAM total in the ESXi host and the other VMs aren't using much, so there is plenty freely available. However it simply won't boot with more than 1GB configured.
Any ideas?
Thanks.

Well I deleted the VM and re-created it, and reloaded Windows and all my software, works fine now.
Thanks for all the help.

Cannot boot with new SSD

Installed new OWC 240G SSD in 2007 iMac. Started up with old HD in external case running OS 10.10.2. Initialized SSD with Disk Utilities, and it mounted on the desktop. Transferred contents from old HD to new SSD. Computer boots fine from old HD in external case, but does not boot with internal SSD. After displaying Apple symbol for a few seconds of the startup process, computer goes to a kernel panic and gets into a loop of retry message-Apple symbol-message-etc. The SSD shows on the desktop, but does not show as a startup disk in System Preferences pane. Disk Utilities shows drive is fine, but repair of permissions is grayed out. Window says permissions repair is only permitted on OS installed with an Apple installer. System folder on the SSD does not show the "blessed" symbol. Have tried recloning using Time Machine backup - same result. Installed eDrive on SSD with TechToolsPro, and can start up in eDrive thru TTP window, thus verifying all cabling. After booting with original internal HD installed in external case, SSD will show on desktop, but will disappear in a few minutes after a message says it was improperly ejected. Suggestions? Is there a way to access OS 10 software purchased and downloaded from Apple site?

Many possibilities here. Maybe a bad connection when you installed the drive. Maybe a bad drive. Maybe a bad SATA cable.
How did you format the drive? Should be Mac OS Extended Journaled. When you boot into the recovery drive, access disk utility from there and see if you can access the drive.
I have the same drive as you. What I did is use Disk Utility from the recovery drive of TM. I first re-formatted the SSD drive. Then I used Disk Utility to restore the whole drive of my original to the new SSD drive.
You can still download the Yosemite installer from the App Store in your purchases providing you downloaded it from the App Store already.

Mac Boot with Nano attached

Whenever my Nano is attached to my G4 Titanium the computer starts in open firmware, and I have to type mac-boot to boot up. Without the Nano attached it starts up just fine.
Any solutions?
I just got the Nano for Christmas.... It's a second generation.

My harddrive is selected as the Start-up disk, and the iPod doesn't even show up. It's not showing up on my desktop either, just in iTunes. I'm not keen on attaching a hub, since that would require buying one and I shouldn't have to buy a hub for my computer to start up properly....
I suspect that the problem lies with software for a 1st generation iPod I had before replacing it with the Nano this Christmas. I can't update using Software Updater, because I ignored all those updates that didn't apply to my 1st gen iPod, and now "Reset Ignored Updates" is greyed out. I already tried deleting the preferences but it's still greyed out....
The mystery grows thicker.....

Boot with software RAID0

Similar Messages

Maybe you are looking for