Making an alternate boot disk & make it to boot while primary fails

Dear all,
Its a new query from me which i hope a chhallenging task for the new comers and a general forum for the experts and specialists.
I am having a intel pc where i loaded Solaris 10 os for x86 in a 40 gb hdd as a primary master c0d0s2.
now i am having one more 40 Gb hdd which i want my system to boot from this when my primary fails. c1d0s2
How to make it possible
Regds
Suseendran .A
919213540324

Also -- PRAM zap didn't impact the situation; the Mac still shuts down instantly and completely, approximately 15 seconds after the boot icon appears and spokes start rotating.
Next, in a few days: a reinstall of the System on that drive, using archive option.
However, if someone still has any "outside the box" suggestions on what might be wrong / fixable, I'd certaintly like to avoid the System reinstall if possible.
A reminder that I did a full reinstall of the Combo Updater for 10.5.8 a couple of days ago to attempt to repair/replace any corrupted system components, but that had no impact on the problem (didn't really expect any, but it's sometimes worth a try).
Note that my original update to 10.5.8 (with the Combo) was a long time ago, and there were no problems with booting or other behavior at that time. This is a recent development, with no discernible cause or event that might have led to it.

Similar Messages

HP Pavilion g6-2330dx. "No Boot Device. Insert boot disk and press any key" Memory test failed

Hi. So I am trying to help a friend with her laptop. It's a HP Pavilion g6-2330dx.
Product #: D1C01UA#ABA
Serial #: [Personal Information Removed]
Windows 8
ADATA 4GB RAM
Toshiba 640GB HDD from the looks of it.
The laptop is unable to boot into Windows, so I suspect the hard drive. But I ran the hard drive test and it passed all the tests. The SMART test and both the short and long test. I ran the tests multiple times and it passed each time. I tried reseating the hard drive and still no go. I also removed the HDD and connected it to my desktop PC to see if it detects and it did. Ran the Windows 7 own HDD test and it passed.
Currently, there doesnt seem to be any operating system at all on the HDD. When I check, there is a C: drive of ~90GB partition that is ~90GB free, but inside there are Windows files/folders. There is also a D: drive Recovery partition that says ~26GB with only ~2GB free, but when I go inside there's only ~350MB worth of data.
So then I ran the memory test (in BIOS) and it failed immediately. I reseated the RAM module. I tried the other slot. It still failed. So is it safe to say the memory is the cause of this problem?
Pressing the F11 key that is supposed to take me to the System Recovery only leads me back to the black screen with "No Boot Device. Insert boot disk and press any key"
I even tried to install Windows 7 to see if it'll work. I was able to get the laptop to boot/read off the Windows 7. But when I click to install, it asks for a boot device driver or something like that.
My friend doesn't have the recovery disk either. I guess she lost it.
Anyway, is it as simple as replacing the memory or could it actually be the HDD (even though it passes)?
EDIT: This is what the System Log in BIOS says
0021           Time: 10/13/2014
03F0           Time: 10/13/2014
03F0           Time: 10/13/2014
The date was the first time I ran the tests. I havent received those numbers (error codes?) since.
EDIT: Just for kicks, I ran Memtest 2.11 just now (forgot I had the disc) and it immediately went red with thousands of errors, hah.

Hi bghs,
Welcome to the HP Forums!
It is a fantastic place to find answers and information.
For you to have the best experience in the HP forum I would like to direct your attention to the HP Forums Guide Learn How to Post and More
I understand that you were unable to boot into Windows, and you suspected the hard drive and tested it, but it passed both short and long test. With that being said and the fact that it also passed leads me to believe the hard drive is fine.
You tested the memory and it failed. You tried reseating and swapping slots but they still failed the test.
I would test each card individual with the memtest to determine if it is just one or both cards that have an issue.
When you installed it in another computer, you did see the recovery partition. Once the memory issue is resolved, if you are still unable to boot into Windows, I suggest you do a recovery with the minimized image.   Here is a link to Performing an HP System Recovery (Windows 8) to assist you with that process.
I hope this helps.
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

Best Practice??? Change from internal boot disk to external disk

I have a mini running 10.5.6 server and it currently boots off it's internal disk. I was hoping to get some feedback/input from others on a good process to convert the system from it's internal boot disk to an external boot disk (firewire).
I wanted minimum downtime during the conversion and I of course, want a complete snapshot on the new boot disk. Lastly, I do not have a local keyboard and console on the system although I could connect one if it seemed to be much easier that way.
In general, I am thinking of the following:
1) Boot into the Leopard Server CD.
2) Use diskutility to Restore from the internal boot disk to the new external boot disk.
3) Choose the new boot disk as the startup disk.
4) Reboot onto new disk.
Is diskutility the best bet?? Meaning will it work this way if the drives are different sizes??
Should I try to clone the disk from the internal boot disk (assuming I shutoff services first) using SuperDuper or Carbon Copy Cloner?? But I believe they do not copy over all logfiles, etc..
Or does anyone have a quick overview of a methodology which they have done in the past or just are suggesting might be a better process than the ones I described??
In Summary:
1) From the CD, clone using diskutil and change boot disk
2) From the running OS, clone using SuperDuper or CCC and than reboot onto new disk
3) Something else??
Thank you in advance.

For cloning the machine you have the approach fine. Disk Utility is fine and booting from the CD is the best method. Simply use the restore method.
But why on earth would you want to boot from an external Firewire drive? First, there is the issue of speed. You have a mini, let's assume it is a one generation back Intel. It has an internal SATA drive on a 1.5 Gbps connection. You want to move that to a 400 Mbps Firewire bus? Next, beyond the speed issues, you have a persistence issue. You are taking the boot volume and moving into to a transitory bus. One of Firewire's greatest strengths is easy connection/disconnection. Persistence is not a strong point.
Next, if your plan is to move the boot volume to some form of a Firewire RAID, then you are even penalizing yourself more. The mini has one FireWire port. If you are using two devices and creating a mirror RAID, then you need to daisy chain. Talk about points of failure, asynchronous startup time, bus blocking, etc. Not wise.
Plus, I can not count how many external firewire devices have burnt up in the effort to have small footprints. Lacie and the "let's put a drive in a metal case with no fan" approach = melted drive. Western Digital and Lacie with the "let's make a completely un-reusable external power brick that either breaks in a small breeze or falls out when the heavy guy walks by the server" approach.
If you are looking at a Firewire RAID enclosure, then you are missing the objective of speed as you are limited by the 400 bus. It is nice to say that you have a four drive SATA 2 RAID case running a RAID 5, but you are defeating the purpose of why you bought the raid. The RAID 5 can provide an exponential increase in I/O performance. But that goes out the window because of the slow bus.
If your argument is that "this is a server and my bottleneck is Ethernet," that too does not hold up. You are likely running on a gigabyte network.
For system details check out http://developer.apple.com/documentation/HardwareDrivers/Conceptual/Macmini_0602 /Articles/architecture.html.
Take this with a grain of salt. You caught me on a grumpy day as yesterday I dealt with a melted external firewire drive.
My advice is buy real server class hardware. What is you objective? Drive redundancy? Capacity? A mini is a great dev server. Not a production server. This is your data. Presumably the data that makes your business function. Don't trust it to a single platter. And don't trust it to a consumer level, disposable system. I am not trying to malign the mini. It is a fine machine for its role. Its role however is not to be a production file server. Now as a web server, we are talking a different situation.
Ok, I am rambling. Hope this helps in some way.

How can I partition, clone the boot disk, no cd?

How am I going to partition my boot disk? I only have the OS that came on the hard drive, no cd.
Tried start up c key on tiger 10.4 but it did not start from that cd where I thought perhaps I could administer this partitioning.
And further, how can I clone once done, no cd.

Let me see if I have this straight:
You want to partition your boot disk. That's it right?
All you need to do is clone your boot drive to another partition, disk, external, etc. You can use either superduper! (recommended), carbon copy cloner, or even just use osx disk utility.
http://www.shirt-pocket.com/SuperDuper/SuperDuperDescription.html
http://www.macupdate.com/info.php/id/7032/carbon-copy-cloner
Once you clone your boot drive, make sure it boots up first. Then if everything is good, re-partition the boot disk (erase) into however many partitions you need in Disk utility.
Then boot up from your clone you just made, open for example superduper, and clone back to your new partitioned drive. Bootup from the new partition drive, and you are set.
You don't need the CD to partition or even clone using DU.

Mac Classic secret boot disk?

Hello,
Is there a secret boot disk in the ROM of Mac Classic?
I've pressed Command-Option-X-O and got a message "Welcome to macintosh", but in English!(I have a Russian system 7).Then my mac booted up the System 6.0.1(It looks very cool!) very fast.
I've rebooted my Mac Classic and repeated this, but it's booted System 7.1 and just shown me an icon of the diskette with a label "Boot Disk".
I've set this diskette in the Boot Disk control panel and booted System 6.0.1 normally.
Note:Can I Add the Russian Language or the Russian fonts to this System 6.0.1?

Is there a secret boot disk in the ROM of Mac Classic?
Yes.
Can I Add the Russian Language or the Russian fonts to this System 6.0.1?
No. It is hardcoded and cannot be changed.
(38784)

Unable to Log and Capture AND make FCP a boot disk

I am unable to go into Log and Capture mode in FCP 4. I can capture from firewire using I movie just fine so I know the sytem works. The minute I open Log and Capture from within FCP (with the JVC Mini-DV camera hooked up thru Firewire), it crashes. Help. I upgraded from FCP 3 to FCP 4 a couple years ago and it hasn't worked right since. Would re-installing the FCP 4 upgrade work? Also, my system works very sluggish. Please explain to me how I would make the veersion of FCP 4 my boot disk. I realize that I can't have the FCP 4 application and the media on the same drive but is there a way to partition one of my drives and make FCP one of the startup disks? Hope this isn't too confusing. Thanks.

First off, FCP 4 was darn unstable. FCP 4.5 is a free upgrade and is STILL the most stable version out there. FCP 5 is getting there.
Secondly, try:
Shane's Stock Tip Mantra: If the program was working fine, and now isn't, or just isn't working the way it should, the first things to do are:
1) Trash your FCP preferences. Download the appropriate version of FCP Rescue at http://fcprescue.andersholck.com/ and run it.
2) Open the Disk Utility and Repair Permissions.
As for partitioning the hard drive, that isn't necessary. Hasn't been since FCP 3.
Shane

Is there any way to make a snow leopard partition on an early 2011 MacBook Pro that was upgraded to Lion, without the original boot disk?

So I have an early 2011 MacBook pro, I believe it shipped with snow leopard originally, as I purchased and upgraded to Lion fairly early on. I am trying to make a partition right now and have it run snow leopard so I can use programs that have PowerPC.
I should note, I replaced both the RAM and the harddrive in my Macbook pro. I changed from 4 GB of ram (that came shipped) to 8 GB of ram from a 3rd party, that I installed on my own months ago, have registered in the computer and have been working fine for quite some time now.
Also I should note I replaced my harddrive. I went from what ever the standard 500 GB harddrive that shipped with 15 inch early 2011 MB pro's. I now have a 3rd party SSD that's 240GB's that I also installed on my own, (at the same time as the RAM---Black friday items) The harddrive has been working just fine since then.
In installing the harddrive I borrowed a friends external harddrive and used a program called carbon copy cloner to get everything over to the SSD.
Now here is my issue. I have ordered the Snow Leopard (10.6.3) install disks from apple, I have created a partition on my SSD for snow leopard, but when I try to select the install disc for snow leopard at boot I get three beeps.
I know this issue has been posted elsewere but it said answered and the answer is no longer available. I also am unsure if any of the RAM or Harddrive swapping could have been causing the issue. I have the old harddrive and RAM still, but unfortunatley have no external harddrive anymore or money to afford one.
Is there any way I can install a partition that runs snow leopard on my early 2011 MB pro with what I have (new SSD, New RAM, Current version Lion running, no external drive, lack of original snow leopard disks [I lost them ] and the general 10.6.3 snow leopard boot disks).
Let me know If there is anything I can do. I'm a now broke college student so i'd like to spend as little $$$$ as possible
*PS I should also note the DVD drive is working fine, it reads the disk, the disk is brand new, it plays DVD's fine and has never had any issues in the years i've used it for similar tasks*
sorry for the long drawn out post, I just wanted to include as much as possible from what I've seen other people have issues with

BrettGoudy wrote:
...Is there any way I can install a partition that runs snow leopard on my early 2011 MB pro with what I have (new SSD, New RAM, Current version Lion running, no external drive, lack of original snow leopard disks [I lost them ] and the general 10.6.3 snow leopard boot disks)...
As the last post suggests, call Apple and order a replacement original disc for about $17. They will ask you the model and serial numbers.
Your retail version of Snow Leopard OS 10.6.3 will not work on that Mac as it requires a minimum of OS X 10.6.7 to boot and operate.
Another alternative is to again borrow another Mac to install your retail Snow Leopard into an external HD or partition, upgrade it to 10.6.8 and then clone it back to a partition on your MBP.

How do I make a boot disk?

How do I make a boot disk in OSX 10.4 something and have some tools like Disk Warrior on it? I found one program at versiontracker that does this but it doesn't work in .4, oh well ...... or I can just wait for several days til my DiskWarrior CD comes in the mail ....... but who can be without their computer that long in today's day and age? yup, you guessed it, my powerbook won't start up and I've tried lots so far ...... hoping dw will do the trick.

http://www.macosg.com/group/viewtopic.php?t=13956
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How to make boot disk for MacBook Pro with Mavericks pre-installed

Hi -
I recently bought a new 15" MacBook Pro with Retina Display, which came pre-installed with Mavericks (10.9.0). I want to make a bootable USB disk of the system software, and have successfly used DiskMaker X (formerly Lion DiskMaker) to make the USB boot disks for Lion and Mountain Lion. In those cases, however, I was running earlier versions of the OSX, and downloaded the new OSX version -- Lion and Mountain Lion -- from the App Store in order to make to make the disk. In this case, however, Mavericks was pre-installed, and I was unable to download it from the App Store (an alert said that it couldn't be installed on this computer... presumably because it was already installed). I would apprecite any suggestions as to how I can create the boot disk without the ability to download Mavericks. Thanks very much for any help anyone can provide.
Shelly

Open App Store and locate the full installer download file (5.29 GBs) for 10.9.1. Download to your computer.
Make Your Own Mavericks, Mountain/Lion Installer
After downloading the installer you must first save the Install Mac OS X application. After the installer downloads DO NOT click on the Install button. Go to your Applications folder and make a copy of the installer. Move the copy into your Downloads folder. Now you can click on the Install button. You must do this because the installer deletes itself automatically when it finishes installing.
2. Get a USB flash drive that is at least 8 GBs. Prep this flash drive as follows:
Open Disk Utility in your Utilities folder.
After DU loads select your flash drive (this is the entry with the mfgr.'s ID and size) from the leftside list. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
Select the volume you just created (this is the sub-entry under the drive entry) from the left side list.
Click on the Erase tab in the DU main window.
Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
Click on the Erase button. The format process can take up to an hour depending upon the flash drive size.
3. Use DiskMaker X to put your installer clone onto the USB flash drive.
Make your own Mavericks flash drive installer using the Mavericks tool:
You can also create a Mavericks flash drive installer via the Terminal. Mavericks has its own built-in installer maker you use via the Terminal:
You will need a freshly partitioned and formatted USB flash drive with at least 8GBs. Leave the name of the flash drive at the system default, "Untitled." Do not change this name. Open the Terminal in the Utilities folder. Copy this command line after the prompt in the Terminal's window:
sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ Mavericks.app --nointeraction
Press RETURN. Enter your admin password when prompted. It will not be echoed to the screen so be careful to enter it correctly. Press RETURN, again.
Wait for the process to complete which will take quite some time.

How I make a boot disk

Hello.
I'm an absolut Linux beginner and I tried to install archlinux on an external HDD, because my internal windows drives are dynamic logical Volumes and this doesn't work with Linux.
After the installation from the CD I noticed that I cannopt boot from USB HDD because of the BIOS.
How I make a boot disk (floppy) now ? The wiki guide doesn't help because if I boot from the installation CD I don't have the command fdformat and the command pacman - S grub works neither.
Can you help?
Best Regards
BX-8017
Excuse by bad language please, I'm not english!

Ok,
I found a grub boot disk on the net, it was a super grub boot disk. I deleted nearly all files and just copied my files from /boot/grub in the grub directory of the floppy disk. I used the windows tool "explore2fs" to get acces to my boot partition with the grub directory.
Her is my menu.lst:
# (0) Arch Linux
title Arch Linux
root (hd2,0)
kernel /vmlinuz26 root=/dev/sdc1 ro vga=773
initrd /kernel26.img
# (1) Arch Linux
title Arch Linux Fallback
root (hd2,0)
kernel /vmlinuz26 root=/dev/sdc1 ro vga=773
initrd /kernel26-fallback.img
# (1) Windows
title Windows XP
rootnoverify (hd0,0)
makeactive
chainloader +1
It doesn't work, because the hd 2,0 is not found from grub. (Selected disk does not exist)
It seams that grub is not recognizing my usb hdd at start up ?!?! but this cannot be, because during the installation process it is.
Many Thanks
BX-8017
PS The possibility to boot Arch with the Windows Bootmanager is interesting. Maybe we can discuss this later.....
Last edited by BX-8017 (2007-07-18 15:36:57)

Can I Make a Leopard Boot disk with my Free Agent Desk 1.5TB External Hard Drive?

Can I Make a Leopard Boot disk with my Free Agent Desk 1.5TB External Hard Drive? Using my Power Mac G5 Dual 2.0Gig original computer?

Only if it is a FireWire interface. The G5's won't boot to a USB 2.0 drive.

Help me make a boot disk

hi, i have tried all sorts of ways to make a boot disk with a working Disk warrior, i have tried bootcd( but doesnot work on 10.4) i have tried CLoneX, but it wont load Disk warrior, i have even created a disk image of my mac os X up grade disk and then put diskm warrior on it, (just drag and drop form the orginal disk image) , but itg wont load, at the moment, i am tring to use my mac os X install disk.....any tips would be great
i am trying to repair my catalog file , whihc apparently has an illegal name..... alos ii need to fix my 250gb hard drive that crashed, and now my computer wont even reconize,,,,,,,now, i have at my disposale aa 10gb hard drive and a 20 gib drive, i have installeed mac os x on the 10 gb, but it wont boot form it ( it is in a fire wire enclousre)...... my other 20 gb is crashed, and i cant mount it, in order to format it....... HElp plz
all3 haard drives are western digital,, and the enclousre is a A-Power.....here is a link to some info on the enclouure..... http://www.geeks.com/details.asp?invtid=AP35-C&cat=CAS
Help me plz
also any tools besides disk warrior would be a great help, because when the device is connected and i try to run diskwarrior, it just freezzes......

Hello,
I am following the video Alsoft recommends in order to create an emergency disk.
http://www.macworld.com/quicktime/webbungalow12-01.mov
It is very helpful. I only purchased Disk Warrior a few days ago.
I am trying to install from the download I received. My CD will arrive in the mail at some point
I can only get so far. As it is installing to the emergency disk it stops with an error message:
An error occurred while trying to complete the installation. Installation was canceled, leaving your dis untouched.
Any idea what am I doing wrong?????
Thank you

Making Bootcamp Volume Default Boot Disk

I have just created a Bootcamp Partition on one of my Volumes. When I use it, I want to make this partition my default boot volume so that if I am doing Windows Installs that require Windows to do an automatic reboot, it will boot back into Windows not my normal MacOS X system. This means that an Option Boot will not be adequate since that just overrides the Boot Volume for THIS boot but not for the next boot (or reboot). To make it permanent, I must use the Startup Disk preference to select the volume. This is where I am running in problems. I have 4 separate boot partitions and used a barebones 10.6.1 partition to do the creation of the Bootcamp Partition. When I boot into that partition (or do an Option Boot) I see the Bootcamp volume for selection. If I boot into any other MacOS X partition (including a 2nd MacOS 10.6.1 one) or my normal 10.5.8 Partition (which I plan to clone copy into the barebones partition after erasing it and upgrade to 10.6.1) I do not see the Windows volume in the Startup Disk menu (although the disk is on my Desktops so it is being seen as a normal disk).
How, if possible do I make the Bootcamp Volume available to ALL my Boot Partitions for selection via their Startup Disk Preference. I am holding off on doing the Clone and Upgrade due to my fear that once I do it there will be no way to select the Bootcamp volume via Startup Disk and thus I will need to hold Option every time I boot or Windows reboots. I know that I could Option Boot to get to Windows and then use the Bootcamp Menu to select the bootcamp partition as default and then reboot to make it permanent) but I would rather not have to go through this hassle.
Thank you.

Yes I did the Bootcamp install under Windows (by using the MacOS X DVD).
As I stated, the ability to set Windows as the default Boot Volume works with the MacOS X Partition that I used to do the Boot Camp Assistant execution and the Windows Partition itself (ie: When running Windows). I can also do an Option Boot to boot into Windows (but that does not make it the default volume).
My problem is that aside from the partition that I was booted into when I ran Boot Camp Assistant, I have OTHER MacOS System Partitions that I boot and none of them see the Bootcamp Partition in their Startup Disk Menu (only the one that created the Bootcamp Partition). While I know that I can Option Boot into Windows, set the partition as default, and the reboot to make it take, I would like to avoid the need to do that useless 2nd boot just to set the default boot volume.

Make a USB boot disk to restore OS AND files

I use Time Machine faithfully. I've installed OS 10.6 on a thumb drive for emergencies to restore files etc. when i've errantly thrown them away, and always thought I could somehow use it to restore my system in the event of a really big problem (never had to really test it out for real...until last night!)
I discovered that just having a boot disk isn't enough. I still needed to boot from the original CD, go to "Utilities", then "Restore from Backup". So much for all my planning.
Isn't there a way to include that essential feature on my USB boot disk?

All you need is a external powered USB drive and free Carbon Copy Cloner.
http://www.bombich.com/
You can hold option and boot from the clone, make a backup or reverse clone when you want, total access to the clone from another Mac.
You don't need TimeGizmo or a USB thumb drive or cd's that scratch. Your not a newbie that deletes files by accident.
And if you are there is free software for that here:
http://www.cleverfiles.com/pro.html
(no comp ever)

How do I make a boot disk for my new iMac?

How do I make a boot disk for my new iMac?

Make Your Own Mavericks, Mountain/Lion Installer
After downloading the installer you must first save the Install Mac OS X application. After the installer downloads DO NOT click on the Install button. Go to your Applications folder and make a copy of the installer. Move the copy into your Downloads folder. Now you can click on the Install button. You must do this because the installer deletes itself automatically when it finishes installing.
   2. Get a USB flash drive that is at least 8 GBs. Prep this flash drive as follows:
Open Disk Utility in your Utilities folder.
After DU loads select your flash drive (this is the entry with the mfgr.'s ID and size) from the leftside list. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
Select the volume you just created (this is the sub-entry under the drive entry) from the left side list.
Click on the Erase tab in the DU main window.
Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
Click on the Erase button. The format process can take up to an hour depending upon the flash drive size.
Use DiskMaker X to put your installer clone onto the USB flash drive.
Make your own Mavericks flash drive installer using the Mavericks tool:
You can also create a Mavericks flash drive installer via the Terminal. Mavericks has its own built-in installer maker you use via the Terminal:
You will need a freshly partitioned and formatted USB flash drive with at least 8GBs. Leave the name of the flash drive at the system default, "Untitled." Do not change this name. Open the Terminal in the Utilities folder. Copy this entire command line after the prompt in the Terminal's window:
     sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume
     /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ Mavericks.app --nointeraction
Press RETURN. Enter your admin password when prompted. It will not be echoed to the screen so be careful to enter it correctly. Press RETURN, again. Wait for the process to complete which will take quite some time.

Making an alternate boot disk & make it to boot while primary fails

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