Changing ZFS options on boot drive before install

Hello,
I would like to install Solaris on a new server but I am hoping that it's possible to set up ZFS on the boot drive (which happens to be an SSD), modify some of the options and then have Solaris install onto this.
In particular, I would like to change the number of copies to 2. It's my understanding that if this is changed after install, it only affects newly written data. Unfortunately I cannot fit anymore drives into this machine, otherwise I could add a mirror instead.
I could install Solaris, modify the options and reinstall and select the existing partitions, but the installer indicates that this will be wiped (I assume reformatting and losing my changes).
Is it possible? I was planning on using the Live USB installer but perhaps I'd need to use an alternate install. I've been doing a bit of searching but not having much luck.
Alternatively, is there a way to modify the option and have ZFS duplicate the blocks for existing data?
Thanks for any help
David

HI David,
You can set ZFS pool or file system options during an AI install but I don't think there is a way to set copies=2 for existing data after the root pool data is written. Some options can be set after the data is written but this isn't one of them.
I have set pool options during an AI install and the syntax should be similar for a file system option. The syntax placement is a little tricky.
A non-redundant root pool on a server with copies=2 doesn't provide real redundancy for your data. The copies=2 option is suggested for
one-disk laptops, where there is no other option. I wouldn't depend on copies=2 to protect your data on a server. Yes, it might help in some
cases, but if the disk fails, then copies=2 is unlikely to help. Please consider a mirrored root pool for your server.
Thanks, Cindy

Similar Messages

I have seen so much response about the Mountain Lion update slowing down computers. I am updating from Mac OS x 10.6.8. What can I do to ensure the upgrade will go fine? Do I unplug my external hard drive before installing, or keep it plugged in?

I have seen so much response about the Mountain Lion update slowing down computers. I am updating from Mac OS x 10.6.8. What can I do to ensure the upgrade will go fine? Do I unplug my external hard drive before installing, or keep it plugged in?
Also, I have the 08 version of iWork. Will this cause problems for the update? Can I update this AFTER I update the processor?

Welcome to Apple Support Communities
There's no reason to think that Mountain Lion will slow down your Mac. Just make a backup of your data before upgrading with Time Machine > http://support.apple.com/kb/HT1427
Also, check that your apps are compatible > http://www.roaringapps.com Upgrade them to a compatible version or delete them before upgrading.
The external drive won't make the OS X Mountain Lion installer fail, but it's better to unplug it during the upgrade.
iWork '08 is compatible with Mountain Lion. iWork '09 includes OS X Mountain Lion features and can be purchased at the Mac App Store.
To upgrade to OS X Mountain Lion, I recommend at least 4 GB of RAM. You can check how much memory you have in Apple menu > About this Mac

Setting up an external drive before installing Leopard

I have just purchased a new MacBook and a stand alone version of Leopard to put on my iBook. I have an OWC external drive as well. I want to set up the external so that I can have a bootable copy of Tiger and OS9 (my kids need OS9 to run some of their games) The external is configured as MacOS extended right now with no partitions. I am guessing that I should partition this drive with four partitions? One for Tiger, one for OS9, one for Time Machine, and one for other data, music, movies, documents, etc. My question is what would be good sizes for these partitions? Also if I use Carbon Copy to clone my existing OS, is the clone bootable or do I have to do something else to make it bootable? Will it save all my current files too?
I have been reading the discussions group for several hours trying to figure out what steps to take to install Leopard on my iBook so it has the least amount of problems and this is what I have come up with.
1. repair permissions, run Apple Hardware Test, back up my current OS and any other documents, files, etc. using Carbon Copy
2. Install Leopard using Archive and Install option, with save network preferences box checked.
3. repair permissions again after install
4. enjoy Leopard, (hopefully)
Have I left anything out?
thanks in advance for everyone's help.
Jennifer

I believe you can have OS 9 on the same partition as Tiger, and use "classic" to run the kid's games under Tiger. That will prevent you from wasting disk space with to many partitions. I would definitely recommend putting Time Machine on its own dedicated partition as you indicated.
OS 9 can be installed on a single gigabyte. I'd not install OS X on less than 10GB (this would be for Tiger...and I'm assuming it wont be heavily used beyond running the OS 9 games in classic mode). I'd then put as much as you think you can into the Time Machine volume....as a rule of thumb, having the TM volume be double your Leopard installation is plenty, but it really depends on your uses (file size, frequency of creation/editing, etc).
The clone will be bootable if you restore it to a working partition. As a clone, it will "clone" everything on your drive...files and system...everything.
Those install steps seem right to me. The only thing I'd suggest is to give Leopard a "break-in" period where you set up all the system preferences the way you want and let it run (boot it up and shut it down a few times). Run all the applicaitons that came with it (textedit, photobooth, etc) and see if then open and behave corretly. Then move on to third-party applications you've installed and be sure they work as well. When all that's done and things seem to be ok, migrate your files back to the drive if it's needed, though in the archive and install there's teh option to preserve user data, and this will do the copying for you.
One potential problem is if programs behave funky and settings dont get saved, etc., you might have corrupt preference files, in which case try removing the preference files from your ~/Library/Preferences/ folder for the affected applications.
Hope it goes well!

Cant see the boot drive when installing, what to do?

Trying to install windows 7 on my MacBookPro 15” late 2013
Using a SDcard and Boot disk
Using Bootcamp Setup Assistant to create a partition and a boot disk via a 64 Win7 installer ISO file
Everything looks fine, it copys everything to the SDCard, formats it to Fat, copying drivers and all, reboots but when the install screen comes up, it says that it cant find any bootable disk
Have done it three times now; with different ISOs, but cant get it to see the installer, any tricks?
Thanks

One option is to download the drivers on the SDCard and just put the Windows ISO on the 4GB USB. If you are installing Windows 8.I have two separate disks of roughly 4GB each for 32-bit and 64-bit. I have created iso from the 64-bit disk on my desktop and can have Bootcamp drivers (~950MB) and the ISO fit on a 4GB USB.
Also, after Windows install, you have read-only access to the OSX HFS+ partition, so you can copy Bootcamp drivers directly from the OSX side to the Windows Documents folder and install Bootcamp drivers, without needing the SDCard.

Installing New Boot Drive ?

Sorry to double post but, had this in the wrong section.
Hello, fellow G4'ers.
Mine is G4 MDD 867 Dual CPU and has a giga 1.4 CPU upgrade, 1.75 GB RAM.
ATI 9600 Mac OS X (10.4.11). 400W PS
Still runs well enough for my purposes.. besides drives are pretty cheap these days, so why not.
I Have 3 drives total now. 2 are Internal, 1 is External (FW400).
1 - (original) Boot drive 60 gig (20 GB avail.)
2 - Maxtor 200 gig with 2 partitions,
a) 40 GB partition w/ 40 GB avail. and
b) 160 GB partition w/ 90 GB avail.
I also have a 250 gig FireWire External (bootable) drive that has a cloned, used CarbonCopyCloner,
backup of the main boot drive and still has ~ 180 GB avail.
I only want to replace the original (aging) boot drive BEFORE it goes bad.
I read somewhere here that a separate partition for the system alone, could b a good idea. can anyone confirm this for me ?
I got and installed the 2nd drive myself (Maxtor 200 GB), so I think I can do this.
I need to be sure, as to a plan of attack here (software-wise), and appreciate any input as to a good way to do this.
I'm sure there are a few ways it can be done.
My best guess's are;
1-get the new ATA drive (500 gig drives can be had for under $100) Any hot tips here ???.
(How's this sound "500GB Western Digital Caviar SE16 7200rpm 8.9ms 16MB Cache UltraDMA 100/ATA 5 HD" ?????
2-Check and be sure a good bootable backup of boot drive exists on the External drive.
3-Shut down and physically install the new drive, discard old drive, plugging it into the same place the old one was in. (I guess this is right, but not real sure about this, any jumpers to move/check ??? , ) any other possibilities here ?
Now the variables/my best guesses :
4.a ) Power On, Startup use the (C key), and boot with my Tiger Install disk, and install a fresh Tiger OSX 10.4.xxx system onto the new drive.
QUESTION; Not real sure how to get this updated to 10.4.11 yet, but I think there's a "Combo" that will bring it right up to 10.4.11, but I'll need my internet connection for that.
Perhaps boot with the clone/external and download the update file to disk and install it that way ??? Definitely need some help with this .
4.b ) I could just copy/Clone in reverse from External to the new drive (I should think a clean install would be better here as to not keep any system flaws from my existing system, including that messy stuff that the latest security updates introduced. But, this could work, right ? Perhaps not ? I think I would really like to have a New Clean system as the Original HD may be weak/flawed.
4c ) Perhaps there's a function in Disk Utility that can help with doing all this, Restore? Archive ? whatever ?
OK. That's about where I am here. I'm not really a noobey, but I just never had to do all of this and want to be sure of a good plan before I get started, and don't want to overlook anything.
Thanks very much

Good News here, just to finish up.
I Got a FW external. Cloned boot drive to it (CCC 3.1.2). Did a archive & install on the external clone with Tiger DVD, and updated it to 10.4.11 + all misc updates. Fixed permissions between all phases. Deleted previous sys folder. Rebuild & optimize w/DiskWarrior. Pull old boot drive, install new WD 320 GB, connections were all "Cable-select", no master/slave stuff. Started up with tiger DVD and formated the seen new drive. Booted from external, cloned clean, archived/new SYS to new boot drive. Done.
Only a few small probs. with prefs. here and there, but all back and running fast & smooth and now I even have a regular backup plan to the external.

New boot drive question

I'm looking to replace my 250G boot drive with a 1T; Can I use SuperDuper or CCC to move the OS and applications to a FW drive & boot from that? I'm confused about starting up after replacing the boot drive. Thanks for any confidence you can give me

Hi. You can clone your current boot drive to an external FireWire drive and then boot from it - and then install the new internal drive, and clone the system from the FW drive back to the new internal drive. Or install a new system on the internal, if required.
You should make sure that any other FireWire devices are disconnected during cloning. You should also run Disk Utility > Verify Disk and Repair Permissions on the internal before you clone.
You should check that the boot from the FireWire works a few times.
You can select the boot drive before you Shutdown in System Preferences > Startup Disc - or boot holding down the Option(alt) key and select the Startup drive from those offered. Patience may be required, as it's a bit slow to find the boot drives sometimes.
Good Luck.

Messed up boot drive, how to fix it?

I accidentally changed permissions on the boot drive to "no access" (applied to all enclosed items), everything froze, had to shut down from the power button, and now my Mac won't start (gets stuck at the grey apple screen with the spinning wheel).
I tried to use the SL install CD to repair permissions, etc., but nothing seems to help.
I'm ready to reinstall the OS but want to do it in a way that will preserve all my applications installations and preferences. I noticed there is no option for Archive&Install on the SL CD, so how do I do this?
Thanks for your help!
PS. I have back-ups of all user files but not for apps or system files. I can however boot up from a USB drive and access the internal disk to copy files if necessary.

kaymanjr wrote:
I accidentally changed permissions on the boot drive to "no access" (applied to all enclosed items),
you completely hosed your system by doing this. reinstall snow leopard on top of your current install. this will preserve your user data and applications. and in the future NEVER EVER use apply to enclosed items" on ANY system created folders, your startup drive and the TM drive. use it on folders you make yourself only.
everything froze, had to shut down from the power button, and now my Mac won't start (gets stuck at the grey apple screen with the spinning wheel).
I tried to use the SL install CD to repair permissions, etc., but nothing seems to help.
I'm ready to reinstall the OS but want to do it in a way that will preserve all my applications installations and preferences. I noticed there is no option for Archive&Install on the SL CD, so how do I do this?
Thanks for your help!
PS. I have back-ups of all user files but not for apps or system files. I can however boot up from a USB drive and access the internal disk to copy files if necessary.
you should do regular full backups of everything. use Time machine or one of many 3rd party backup tools
http://discussions.apple.com/thread.jspa?messageID=7495315#7495315
Message was edited by: V.K.

SSD Boot Drive for Mac Pro

Apologies in advance, I’m really not great with this sort ofstuff.
Basically, what I would like to do is add an SSD to my MacPro and use that as my boot drive. Ihave a 1TB HDD which is currently doing everything but I’d like to use thispurely to store music, videos etc.
As well as booting to Lion, I’d also like to use the SSD torun Windows 7 with VMware Fusion – presume this doesn’t cause any problems?
The plan would be to have the system software andapplications on the SSD and everything else on the HDD. Only thing I’m not sure of is where the homedirectory should go?
Does this all sound like a realistic goal? Also, will this be an relatively straightforward process? Migration Assistant?
Thanks.

So in effect, lets just say your SSD drive fails. As you are currently setup, can you boot from your secondary drive to your backed up OSX, or do you have to have restore that backup image to a new hard drive?
My whole rational of keeping the home dir separate (disk) from the boot dir is that I can switch among any number of boot drives any time I want to. For example, as a hypothetical case*, I use 10.6.5, and I want to update to 10.6.6, 10.6.7, or 10.6.8, I just do it to my ssd. Now I can still boot from my 10.6.5 backup, say for the sake of comparison to some weird behavior I see on the update, without a blink of the eye. I'm still using my same (common) home dir because it is not involved with the update. If I want to go "back" I can restore the ssd from my 10.6.5 backup.
Of course I would actually do it the other way and boot and update from the backup leaving the ssd alone (don't want to write to it any more than I have to). Only if I was satisfied with the new OS on the backup would I then update my ssd.
The point of all this is keeping the home dir off the boot dir allows you to "flit", "jump", switch, whatever, to different OSs (or backups of the same OS) at will. Your home dir is none the wiser unless the OS dramatically changes or screws things up (so that's why this technique may or may not work across major OS revisions -- Snow Leopard to Lion for example, but its great with a single OS sequence).
While everyone always debates the pros and cons of keeping the home dir separate from the boot dir, what always seems to get lost or not mentioned is the benefit of being able to switch among the OSs when they are separate.
So all of this was a long way of answering your question -- no you don't have to backup to the original boot drive before using it. Just boot from the backup. Your home dir couldn't care less.
* For me going to 10.6.6, .7., .8 is hypothetical since I use 10.6.5 and have no current plans of updating beyond that (can you say "app store"? -- don't want it my machine -- and I won't debate any comments on this -- its my personal decision. And besides this is off topic.).

Wireless Driver Not Installing

Hey guys,
i have a Dell 14R (n4110), i upgraded to win 8 and after a week my wireless driver just disappeared and couldnt reinstall. I downgraded to win 7pro and had the same prob. Then i reinstalled win 7 home premium (which originally came with my laptop) and i'm
still having the same prob, i tried all the drivers for my model on Dell's site. Please assist, thanks!.
Regards,
Jevon.

1.Reinstall driver from Dell support page
http://www.dell.com/support/drivers/us/en/19/Product/inspiron-14r-n4110
2. You may need to uninstall driver before installing new one. Follow the procedures here
http://www.thewindowsclub.com/uninstall-disable-roll-back-update-drivers-windows
3. Do not use optional drivers that comes with Windows Update
4. For troubleshooting see into Device manager and Event logs and share your findings
Regards
Milos

RE: (forte-users) Changing replication options in Fscript? -Tric k

There was one attribute of a service object you couldn't change in fscript..
I think it was whether the service was replicated at all or not (not the
same as setting rep count to 1!).
As Clint would say, "improvise.."
We exported the project containing the service object and snipped out the
part pertaining to the service object in to a little export file.
Then in an fscript script you can branch/checkout the service object and
import the snipped out export file to change the replicated yes/no flag.
Then do whatever other fscript commands make sense.. We tended to leave the
system baseline with the "true" replication flags and let developers run
this little script (only branching the services) to de-replicate all the
replicated services prior to trying to run from their workspace, etc.
Worked like a charm.
-Greg
-----Original Message-----
From: Taras Katkov
To: [email protected]
Sent: 12/1/99 2:57 PM
Subject: Re: (forte-users) Changing replication options in Fscript?
"setappcompcompiled", "setPARTrepcount" can be used in fscript during
application build.
I mean PERIOD!
Taras Katkov
f.e.
FindAppComp AppNAme_PartXX
SetAppCompCompiled MyNode 1
SetPartRepCount MyNode YY
SetPartArgs MyNode \"Whatever\"
SetPartThreadPkg MyNode DCE
commit
[email protected] wrote:
>
Yes through escript one can achieve changing the properties but onecannot
do it when one is partitioning the app where the router gets createdand
assigned ( which is fscript) and the single threadedness of thepartition
takes effect ( for loadbalancing ) except from the partitioningworkshop
(GUI) itself.
-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Wednesday, December 01, 1999 3:39 PM
To: [email protected]; [email protected];
[email protected]
Subject: RE: (forte-users) Changing replication options in Fscript?
Yes you can do it, but you actually do it in EScript not FScript lookfor
the following types of command "assignappcomp", "unassignappcomp",
"setappcompcompiled", "setrepcount", "findagent", "findsubagent",
"findparent" etc.. So start with your EScript manual.
Happy scripting.
-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Wednesday, December 01, 1999 1:36 PM
To: [email protected]; [email protected]
Subject: RE: (forte-users) Changing replication options in Fscript?
no it is not. One can compiling properties but not replicationproperties
through Fscript.
-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Wednesday, December 01, 1999 3:24 PM
To: [email protected]
Subject: (forte-users) Changing replication options in Fscript?
Before making a distribution, we modify replication options on some ofour
service objects from within the Partition Workshop (to get rid of the
router partition on some of our applications). Does anyone know ifit is
possible to do this in Fscript? Thanks for your help.
For the archives, go to: http://lists.sageit.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in anew
email the word: 'Unsubscribe' to: [email protected]
For the archives, go to: http://lists.sageit.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in anew
email the word: 'Unsubscribe' to: [email protected]
For the archives, go to: http://lists.sageit.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in anew
email the word: 'Unsubscribe' to: [email protected]
For the archives, go to: http://lists.sageit.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in a
new
email the word: 'Unsubscribe' to: [email protected]

You can set the the number of replicas through fscript BUT the service
object in that partition has to be marked for LOADBALANCE. I didn't find a
fscript command to do that (that was what mnasser was trying to tell you).
But you can get around it by exporting the plan that has the service object
and look for the string LoadBalance = FALSE, then change it to LoadBalance =
TRUE. Import back the plan and you should be fine.
Norocel Popa
-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Wednesday, December 01, 1999 8:28 PM
To: [email protected]; [email protected]
Subject: RE: (forte-users) Changing replication options in Fscript? -
Tric k
There was one attribute of a service object you couldn't change in fscript..
I think it was whether the service was replicated at all or not (not the
same as setting rep count to 1!).
As Clint would say, "improvise.."
We exported the project containing the service object and snipped out the
part pertaining to the service object in to a little export file.
Then in an fscript script you can branch/checkout the service object and
import the snipped out export file to change the replicated yes/no flag.
Then do whatever other fscript commands make sense.. We tended to leave the
system baseline with the "true" replication flags and let developers run
this little script (only branching the services) to de-replicate all the
replicated services prior to trying to run from their workspace, etc.
Worked like a charm.
-Greg
-----Original Message-----
From: Taras Katkov
To: [email protected]
Sent: 12/1/99 2:57 PM
Subject: Re: (forte-users) Changing replication options in Fscript?
"setappcompcompiled", "setPARTrepcount" can be used in fscript during
application build.
I mean PERIOD!
Taras Katkov
f.e.
FindAppComp AppNAme_PartXX
SetAppCompCompiled MyNode 1
SetPartRepCount MyNode YY
SetPartArgs MyNode \"Whatever\"
SetPartThreadPkg MyNode DCE
commit
[email protected] wrote:
>
Yes through escript one can achieve changing the properties but onecannot
do it when one is partitioning the app where the router gets createdand
assigned ( which is fscript) and the single threadedness of thepartition
takes effect ( for loadbalancing ) except from the partitioningworkshop
(GUI) itself.
-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Wednesday, December 01, 1999 3:39 PM
To: [email protected]; [email protected];
[email protected]
Subject: RE: (forte-users) Changing replication options in Fscript?
Yes you can do it, but you actually do it in EScript not FScript lookfor
the following types of command "assignappcomp", "unassignappcomp",
"setappcompcompiled", "setrepcount", "findagent", "findsubagent",
"findparent" etc.. So start with your EScript manual.
Happy scripting.
-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Wednesday, December 01, 1999 1:36 PM
To: [email protected]; [email protected]
Subject: RE: (forte-users) Changing replication options in Fscript?
no it is not. One can compiling properties but not replicationproperties
through Fscript.
-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Wednesday, December 01, 1999 3:24 PM
To: [email protected]
Subject: (forte-users) Changing replication options in Fscript?
Before making a distribution, we modify replication options on some ofour
service objects from within the Partition Workshop (to get rid of the
router partition on some of our applications). Does anyone know ifit is
possible to do this in Fscript? Thanks for your help.
For the archives, go to: http://lists.sageit.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in anew
email the word: 'Unsubscribe' to: [email protected]
For the archives, go to: http://lists.sageit.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in anew
email the word: 'Unsubscribe' to: [email protected]
For the archives, go to: http://lists.sageit.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in anew
email the word: 'Unsubscribe' to: [email protected]
For the archives, go to: http://lists.sageit.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in a
new
email the word: 'Unsubscribe' to: [email protected]
For the archives, go to: http://lists.sageit.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in a new
email the word: 'Unsubscribe' to: [email protected]

What directory are the RPM files in before installing Oracle?

Hello
I am getting ready to install Oracle9i and one of the RPM files is missing so I downloaded it and will copy it to CD then to the hard drive. The question is:
1) After I copy the RPM file to CD what directory do I copy the RPM file onto on the hard drive before installing Oracle?
2) What directory are the other RPM files to be installed in before installing Oracle in?

There is no specific directory for RPM packages (in case we don't talking about builded rpm packages from src.rpm packages).
You can copy RPM package to and install from any directory. After succesfull installation you can delete it.
Example:
cd /tmp
[ivan@ivan ~]$ cd /tmp/
[ivan@ivan tmp]$ wget -q http://sunsite.mff.cuni.cz/pub/fedora/6/i386/os/Fedora/RPMS/zsh-4.2.6-1.i386.rpm
[ivan@ivan tmp]$ su
Password:
[root@ivan tmp]# rpm -ivh zsh-4.2.6-1.i386.rpm
Preparing... ########################################### [100%]
1:zsh ########################################### [100%]
[root@ivan tmp]# rm -f zsh-4.2.6-1.i386.rpm
[root@ivan tmp]# rpm -qa|grep zsh
zsh-4.2.6-1

Satellite Pro M70: Shoudl I uninstall old drivers before installing the new?

I downloaded the "INF update utility", chipset software for my Sat Pro M70 for windows vista, but am not sure if I have to uninstall the old driver before installing the new one.

You do not have to uninstall the old one.

I have a Mac Pro with four hard drives. I currently have Lion installed on one hard drive. I want to have the option to boot from either Lion or Snow Leopard. How can I do this?

I have a Mac Pro with four hard drives. I currently have Lion installed on one hard drive. I want to have the option to boot from either Lion or Snow Leopard. How can I do this?

It's best to install Snow Leopard on one of the three remain drives without an Operating System.
You can then install the applications you need from the original media. Create a User Account using Setup Assistant.
Do you want to migrate User Accounts from the OSX LIon boot drive, or are you keeping the User Accounts separate?
Dual-booting just requires holding the option key during startup and selecting either Lion or Snow Leopard.

My C drive is 19.5 GB. xp sp3 took 5.05 GB.Firefox also installed here . There's no room for new downloaded files.So I changed the save to option in another drive. Still when downloading large files 'low disk space' message shown.

suppose I want to download a 4 or 5 GB file,in C:/ there is usually 2 or 3 GB left.So I changed the directory of saved files to E:/.Still low space problem occurs and the newly downloaded file is not saved.A low disk space message is shown.Why is this showing?How to resolve this?

in options under the "general" tab change the download folder,if that does not help change the option to "ask every time".I recommended to use DAP to download your files its great and accelerates your speed quite a lot.
link: www.speedbit.com

Cannot boot either from install disk or hard drive

I have done a number of searches, and I have not found a problem precisely like the one I am encountering.
Earlier today, my MacBook (running Leopard 10.5.3) failed to wake properly from sleep. After I attempted to reboot the machine using the power button, I encountered a black box with the following message: "You need to restart your computer. Hold down the Power button for several seconds or press the Restart button."
I have tried all of the usual fixes (e.g., zapping PRAM, removing all power sources, holding down the shift key), and nothing has worked. What puzzles me most of all is that, although the DVD drive is clearly working, I am unable to boot from the install disk.
I would add that, when I old down the option (Alt) key while booting, I am able to see all three of the available options for rebooting. This seems to suggest that the computer is still able to detect my hard drive as well as my DVD drive. Why, then, does nothing allow me to get past the black box with its cryptic (and rather unhelpful) message?
Out of desperation, I unsuccessfully tried to use the option of rebooting from my boot camp partition. I then received a message that might provide a clue. "Windows could not start because the following file is missing or corrupt: system 32\hal.dll" Does this suggest anything to anyone?
If I continue to be unable to get past the black screen over the course of the weekend, I will take my computer in for service on Monday. But it would be nice to come up with some sort of solution before then.

Let me add a quick update to my original posting.
I finally managed to run Apple's hardware tests on my machine. According to the tests, there is absolutely nothing wrong with my hardware. But the fact remains that I still cannot manage to boot into OSX--even using my original installation disk.
As I mentioned in my original post, I am able to get part way into the version of Windows XP that is installed on my boot camp partition. However, I am a little nervous about pursuing the possibility of repairing my XP installation. I am afraid that, by doing this, I may inadvertently damage my OSX partition.
Any and all advice would be greatly appreciated. In particular, I would like to know whether there is perhaps some secret way of forcing a MacBook to boot from the installation disk. Is there anything that one can do when holding down the "C" key does not work?

Changing ZFS options on boot drive before install

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