HP Disk Sanitizer won't boot

Recently downloaded & burned HP Disk Sanitizer to CD. When I tried to use it, it supposedly was on CD, but it wouldn't show any files. So, I downloaded it to a flash / thumb drive. Now I can see the files, but it won't boot either. I have an HP Envy dv7 with Windows 8.

Hello REPENT1...
If you are running HP's preinstalled WIndows 8, or if you installed it yourself with SecureBoot, you may need to go into BIOS and configure Legacy Boot mode.
I hope this helps!
DISCLAIMER: I am an HP employee, but I am not a spokesperson for HP.
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OS X Recover Disk Assistant won't boot from USB

I just replaced my hard drive in my iMac (2008). I'm trying to get the OS installed and I don't have both of my original install disks (I believe they were Leopard disks). When I purchased Lion I did create an install disk, however. I ignorantly tried to install Lion straight up from my disk onto the new hard drive. Now, it says there's a problem with the installation and to try and install again. The problem is the install disk just goes straight to that message and I can't use it to install. I tried to Erase the drive with Disk Utility and start over, but the install disk still goes straight to the "problem" message.
I read about the OS X Recover Disk Assistant tool and loaded that onto a USB memory stick, but it won't boot from it. I can use Disk Utility when I boot from my Lion install disk and the new hard drive shows up, the USB stick shows up, the install CD shows up, and then there's a grey line and under that with a globe icon that says disk3 and under that it says Max OS X Base System.
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IMac Disk Problems; Won't boot and other bizzare behaviour

Well I've been thru most that I can think of; My iMac won't boot. Problem with diskcorruption. fsck in single user won't fix, DiskWarrior stops at rebuilding directory, I have reset PRAM, booting to 10.3.6 stops at loading LoginWindow; DiskWarrior is been the only CD I've been able to boot with. I tried to boot with install Disks for 10.2 and 10.3 but as the boot starts these CDs get ejected. While in single user mode I can navigate around my filesystem except for my home directory; I get a disk error when I go there. Well it appears (1) to be a B-tree problem related to my home directory
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(4) think there's going to be any way to save my data?

You can reset the PMU yourself. Only press it once. That may help you bootup on your install disk.
As far as the corruption goes, If DiskWarrior can't fix it, nothing will. You'll have to Erase and Install. First see if the free demo of Data Rescue can see your stuff. If it can and it's important enough, you can buy the full version. You could also try hooking up another Mac in Target Disk Mode, and see if you can retrieve you stuff that way.
This is the best way to Erase and Install. First backup all your important stuff, if you can, as the following will erase everything on your drive; it will be unrecoverable. Put your install disk in your Mac and Restart while holding down the C key. In Tiger, When you get to the install screen, don't click install and go to the title bar at the top of the screen and click on Utilities (in earlier OS's click on the installer menu).
Click on Disk Utility and choose the hard drive you want your OS on. Then click on the Erase tab. In Tiger, click on the Security Options button near the bottom (it's similiar for Panther and Jaguar).
Once in there choose Zero Out Data (write zero's in earlier versions). This will map out any bad blocks on your drive and bring it back to almost new condition (providing there's nothing wrong mechanically with it, bad bearings, defective or damaged surface, etc.).
Once this is done, go back to the install screen and begin the "Erase and Install" installation. This will put a factory fresh system on a clean hard drive.
Cheers!
DALE

Cold Hard Disk - iPod won't boot with bad folder icon.

I have a 5G iPod, and after a couple months of use, I found that the iPod will start to refuse to boot if it's anything less than 60ºF. I use it a lot, and right now it's cold out, around 40ºF.
We're a poor little white family up in costal Maine where the temperatures are low in the winter, around 20-40ºF. When I drive around in my Jeep Grand Cherokee, I have the heat turned up so that I'm comfortably warm, but my iPod isn't. It will play music fine when it's warmer than room temperature, but I will notice when driving, sometimes the music will just stop -- I look at the iPod and notice that the whole thing is just frozen up - no controls work, the lock doesn't show/disappear when i turn on/off the hold switch, and when I reboot it it will show that silver apple, then light the screen with a grayscale image of a 'Folder with exclamation point' icon, seemingly not finding the iPod Operating System on its hard disk. The unit will refuse to work again unless i bring it to higher temperatures. When it does work, I have to keep it under my leg when I'm driving, and that sometimes doesn't work.
It will work fine indoors, unless it's been in my bedroom overnight, which gets down to 55-60º at night (i have a room thermometer in here), which is normal for us.
Also, if I hook up the iPod to my computer, even if I force it into Disk Mode (grayscale DO NOT DISCONNECT logo), the computer has a hard time mounting it.
I can't imagine that the hard disk wasn't designed to operate in such a normal temperature range for us distant poor Maine residents. There must be something wrong with it. Will I need to send it away?
--CLL
PowerBook G4 15" Mac OS X (10.4.5) circa Nov2005

It would apear the ipod's hdd just won't power up after it shuts down on a restart

Bootcamp volume selectable in Startup Disk but won't boot. Bootcamp not visible with Option Key

My bootcamp volume is selectable in Startup Disk System Preference, but Windows 7 will not boot stating no bootable volume. The Bootcamp volume does not appear when option key held down during startup. Windows 7 booted fine before I booted into MacOS. When I tried to reboot in Windows 7, that's when I received the non-bootable error. All looks fine on the Windows 7 volume.
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Thanks.

Well, want to rule out drive case,, as those do come up with EVERY new OS, just hit Lion 10.7 forum when it came out, or when 10.6.0 came out 3 yrs ago.
Maybe the power adapter is the weak link.
As I said, and goes back yrs, not a fan of FW/USB/eSATA case from major vendors (LaCie, WD, Seagate etc).
And you could try another case. Be sure to buy a case that lets you swap in your own hard drives though.
http://www.macsales.com/firewire - look for bare drive case "0" capacity hard drive

Leopard 10.5.8 won't boot

Here's is a mindbender for you to ponder:
Had a power outage.
My hopped up G4 tower with 2 - 200 GB EIDE drives on an EIDE PCI card. It crashed and one 200 GB EIDE drive didn't survive.
(Yes it was on a UPS but the UPS ran dry and the G4 crashed before it could be gently shutdown)
I removed the crashed drive and made sure the remain drive was jumpered as a single master drive.
It wouldn't boot. All I got was the gray screen (no logo no paddle wheels, no start-up gong)
I replaced the battery on the motherboard (commonly known as the PRAM battery)
It wouldn't boot but I heard the start-up gong.
I booted off the Leopard install DVD and ran Disk Utility repair disk and repair permissions. No problems were found.
It wouldn't boot. Still gonged though.
I installed Leopard onto an external firewire drive and connected it. Restarted holding down the option key to select a boot drive. Selected the Firewire drive.
It wouldn't boot - gray screen only (and the gong).
I installed Leopard onto the surviving drive and it appeared to install properly.
It wouldn't boot (get used to this result).
I erased the 200 GB drive and installed Leopard onto it.
It wouldn't boot.
I took my trusty PowerBook - booted it in target mode and then connected it to the G4 and booted off of it. Success! That worked. So I downloaded the Leopard Combo Updater and updated the Leopard on the 200 GB drive.
Tried to boot off the 200 GB drive.
It wouldn't boot - however now I have an Apple logo on the gray screen - still no paddle wheel though.
At this point I was reseating PCI boards, EIDE cables, and all that stuff. Yes, yes, I reset PRAM a few times and so forth.
It wouldn't boot.
I pulled 2 SCSI drives out of another G4 tower and installed them and "option-started" the G4, selected a SCSI drive to boot from and it booted off an old version of Tiger.
Once it booted, I could see the 200 GB EIDE drive and put files on it and everything! So, it's not like the drive is broken. I ran Disk Utility again just to be sure and it appears to be fine.
When I select it as the start-up disk, it won't boot.
I am seriously out of ideas. Do you have any?
Many thanks.

The "boot" drive is jumpered "Master" and connected on the end connector of the IDE ribbon?
Only the drive on the Master setting and connector is bootable with the Sonnet ATA/133 controller.
The latest firmware is 4.5.0:
http://www.sonnettech.com/support/kb/kb.php?cat=330&expand=_a3_a13_a2_b52_a1&act ion=b325#b325
Wonder if a firmware update is doable or would help....... such an old card in an OS way newer than the cards support level, always a scary thing to mess with......

Macbook flickering screen & freeze, then won't boot pass the apple logo

Hi Guys,
My macbook is driving me insane now. Just recently, my macbook has occasionally flickering screen and freezes after that. Yesterday, when I was watching youtube on fullscreen, it first has flickering screen, then freezes. So I hard booted it pressing the power button. Then, when I try to restart it, it won't boot pass the apple logo no matter what.
Here's my macbook spec
2007 Summer Macbook Pro 15"
Snow Leopard 10.6 OS X
I cracked my screen once, and got a replacement, don't know if that matters.
I've tried the following:
Safe mood reboot, the progress bar goes about half, then disappears and stalls again.
Booted in verbose mode but it gives a warning message:
'com.apple.driver. internalmodemsupport declares no kernel dependencies; using com.apple.kernal.6.0'.
Booted in Single user mood, and typed fsck for disk repair. After checking said the volume Macintosh HD appears to be ok. But still won't boot pass the apple logo after restart.
Boot with installation disk pressing C at startup. Success after a few try:
Opened Disk Utility and did disk repair (no problem found).
Reinstalled Snow Leopard OS X 10.6.
This time it booted with Finder and everything for a short while, then the screen flicker and freezes again (before I can backup anything!). Then, I can't reboot pass the apple logo again.
When I try to reinstall Leopard OS X 10.5 with installation disk, the macbook seems to try to read the disk, but won't boot. I've got a CD stuck in the optical drive now.
I've tried everything I can find online short of opening it up and send it into the oven for baking! I pray it's not a hardware problem, coz I'm no good at that. (QAQ~~~) Please help me!
Thank you very, very, very much!!!
ps. this is my first post. please let me know if I have missed anything.

starangelam wrote:
When I try to reinstall Leopard OS X 10.5 with installation disk, the macbook seems to try to read the disk, but won't boot. I've got a CD stuck in the optical drive now.
Reboot the machine holding the trackpad or left wired mouse button down, that shoudl force eject the 10.5 disk.
Reinstalled Snow Leopard OS X 10.6.
This time it booted with Finder and everything for a short while, then the screen flicker and freezes again (before I can backup anything!). Then, I can't reboot pass the apple logo again.
Ok, so your attempting data recovery efforts.
First get the 10.5 disk out of the machine, like above.
You can also boot into Single User mode, (command s at reboot) and enter
/usr/bin/drutil eject
then type
restart
Next hold c boot and use the 10.6 disk and create a data recovery drive here on a blank external drive, make sure you clean and polish the bottom of the 10.6 disk, if it's bad you will need to get a new one.
Create a data recovery, undelete boot drive
If your problems continue on this drive even with a clean or new 10.6 disk, it's likely a hardware issue with your Mac, not a issue with the drive.
I suspect a failing sector on your internal boot drive, you installed OS X right over the same spot perhaps, as you were obviously able to boot from the 10.6 disk to install it so it seems the hardware of the Mac appears to be working.
You might have other issues relateing to software perhaps, something your installing or running.
Step by Step to fix your Mac
Once you have gotten your files off the internal drive, you may want to look into doing a Zero Erase with Disk Utility before resintalling 10.6 again fresh install method.
Reducing bad sectors effect on hard drives
How to erase and install Snow Leopard 10.6
Look into making a bootable clone, it's easier to restore with and more options than Timemachine
Most commonly used backup methods explained

Power mac g5--won't boot, and I can't sleep

Hi all,
I'm hoping someone is awake and can help. My power mac g5, circa 2005, has always come with some problems, specifically, kernal panics. It's not bad RAM, but I have never tested the video card. Oddly enough, it seems to go down most often in the most in simple internet applications.
Today, it froze in Firefox and I cannot get it to reboot. It stalls/freezes in the gray apple screen. Called my IT friend, and he said to zap the PRAM. That brought it back up for a second, and then it froze again. I replaced the battery, no results.
I can't get it to boot in safe mode or even single-user- it freezes up as well. I certainly can't get it up long enough to load the boot disk.
It may be garbage...I can accept that...but it is holding hours of work. Will I be able to retrieve this??
Help
Message was edited by: nigelsupercat

Hi, I'm having same problem. G5 1.8 dual processor purchased March '05, won't boot. Not from cd either.
Took it to the apple geniuses and first was told it might be a bad board or processor and that I might as well just buy a new system. Well, I can't, because I still need to run some classic applications for business reasons, and because of that I'm stuck at Mac OS X 10.3.9. Anyway... I left my system with the apple geniuses and got a call 3 days later saying it was fixed @ no charge and that the 3rd party USB card was bad. They pulled it and said all was well.Great!, saving me $800 charge for a new board and over $430 for a new processor. So on the way home I buy a new USB hub get home start up and nothing! No change. Back to the Apple Store and after some testing this time I'm told it's definitely a bad hard drive. So, on the way home I buy a new hard drive. Get back, install the new HD and, you guessed it, can't format the disk, system won't boot from CD. BACK TO THE APPLE GENIUSES AGAIN! Now they tell me it's definitely the logic board. After 5 days I'm back where I started... except I have an old USB card that is most likely fine and new USB hub and a new HD I purchased because the Apple Geniuses told me they were bad! I asked them if they would apply a credit of some sort for the unnecessary purchases and my time (The closest Apple Store is 30 miles away), They politely said we appologize for the inconvenience, but no, we can't do that. I've been using Macs of all kinds since the early 1980's. And have never had one fail! Since I started looking into G5 problems, I've found many others with this startup issue. I feel there is a known issue with this series that apple is intentionally sweeping under the rug instead of issuing a recall or credit.

Cannot get MacPro to allow me to boot to an alternative boot disk. Can choose in control panel but will not use the disk to boot. Also won't boot using disk selected using option key

My primary boot disk is encrypted as is a secondary boot disk (backup) but I cannot boot using any other disk. System 10.8.5, MacPro 4.1.
All disks mount using primary boot disk. All disks check out as OK and I have repaired permissions.
When I choose in the control panel the Mac boots but will always use my original boot disk.
When I select the disk using the option key at startup, the boot process stalls with a grey screen and a spinning cursor.
Thanks,
Dave

Still trying to figure this out. I erased the drive, did a format using disk util and then re-installed the system but I still cannot get the disk used as a startup drive. I also tried an external firewire drive and it won't allow me to boot from it either.
I can choose it starting up with the option key but it just gives me a blue screen and the spinning cursor.
If I select it in the startup pref pane it boots into my other startup drive only.
DaveLon

Macintosh HD won't boot, but disk utility says "The volume Macintosh HD appears to be OK." How do I repair the hard drive?

I have a MacBook that needs its internal hard drive's Macintosh HD partition repaired, as the boot screen freezes on startup. I am running a separate, working mac OS from an external hard drive in order to run disk utility and repair the MacBook's internal OS. The issue is, it has dismounted the internal Macintosh HD partition, and won't remount. And in addition to that, the Verify Disk option returns with, "The volume Macintosh HD appears to be OK." I've run Verify Disk and Repair Disk a few times, all with that same result. And the internal OS still won't boot.
I have attempted to make a disk image of the internal Macintosh HD partition and save it to my external hard drive so I can wipe the internal hard drive clean and restore the image, but I receive errors when trying to create the disk image, and when trying to erase the hard drive (I know, I should try to erase the hard drive when I haven't made an image. When I tried to erase the hard drive, the image wasn't done and I thought it was. I got an error for erase, and I got an error for making the disk image) I have tried making a disk image multiple times and haven't been able to create one.
There is also a boot camp partition on the internal hard drive which is of no importance as to whether it stays or is erased.

Reinstall OS X without erasing the drive
Do the following:
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install the Combo Updater for the version you prefer from support.apple.com/downloads/.

DVD drive won't boot from Leopard or Tiger disks

Hi,
I have had some issues booting from the OS install disks with my DVD drive, is it the drive or is it the software?
Can this be fixed?
Thanks
Tom

There are known issues with some Leopard discs not booting, but if your Tiger disc won't boot either, I would say you probably have a defective optical drive.
-Bmer
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My 2006 iMac running Snow Leopard won't boot even after erasing and re-installing Snow Leopard (via my MacBookPro), either from the HD or DVD drive. Can't get it to run Hardware Test. Disk Utility says disk OK - files are there. What can I do?

My 2006 iMac running Snow Leopard won't boot even after erasing and re-installing Snow Leopard. I erased and re-installed by putting the iMac in Target Disk mode and usin my MacBookPro as the host. But after numerous attempts I still can't get it to boot either from the HD or DVD drive. I just get the white screen after the wheel stops spinning. I can't get it to run Hardware Test - just get the white screen. If I use Disk Utility via my MBP it says the disk appears OK. All the Snow Leopad files appear to have been installed. What can I do?

Hi-NRG Bwoy wrote:
I erased and re-installed by putting the iMac in Target Disk mode and using my MacBookPro as the host.
Reet the SMC and the PRAM
 Cheat sheet to help diagnose and fix your Mac
Perhaps you installed the wrong version OS X onto the iMac, you can't use the disk from another Mac.
clean the disk.
If it's not working then use this method to create a bootable 10.6 USB from the iMac machine specific 10.6 disk or the 10.6.3 retail disk on your other Mac, use it to boot the iMac with.
http://www.maciverse.com/install-os-x-snow-leopard-from-usb-flash-drive.html
How to erase and install Snow Leopard 10.6

Won't boot, seems disk is gone?

Okay, I was on my iMac and it was running really slow, so reset it (Apple > Reset). It then comes up with a broken folder or whatever, and won't boot. I put in the installation disk, checked the Disk Utility and the only thing there is the Mac OSX Install Disk. I'm assuming that's not a good thing.
I didn't delete any system files (I barely even go anywhere outside of my user files) so I really just don't know what's going on. I can't even get the CD out of the drive now (because clearly that's the only thing it will boot from), so can't try anything else. Any suggestions, or is it pretty safe to say that my Mac is effed? I've only had it 3 months...
Also, if it is screwed, is there ANY possible way that I can salvage anything from it? I have $12k+ music, tens of thousands of images and photoshop stuff dating back 3-4 years. I've got SOME of it backed up onto my MacBook, but the majority is on there.
Message was edited by: jason_guy13

Thanks rkaufmann87, I'll try that.
Okay, as soon as I got it working again I backed up some of the stuff that I hadn't already. It then started to run quite slow again, constantly jamming up. I don't know, but could this by ANYTHING to do with a virus? I started to scan but then it just jammed completely, I restarted it and then the same thing, nothing to be able to boot from. I did notice it was very hot on top, moreso than normal. I think I'm going to take it in for them to have a look at anyway (once I get it working again and do a full virus scan, if it'll last that long). I'll leave it for a little while, try turning it back on, try rkaufmann87's suggestion and then try go from there, see what happens.
My thing is, I've only had the thing for 3 months? Is it normal for it to just die that quickly?
I'll keep you guys posted, thanks for all the help so far. Much appreciated.

New HDD installed in PowerBook G3, won't boot from installation disk.

I just installed a new hard drive in my G3 Wallstreet and I can't get it to boot from the original Apple CD.
I've tried holding the C key as well as +⌥+⇧+⌫, but to no avail.
The CD tests fine in my old iMac G4, so maybe the culprit is the optical drive, but then again, I'm not so sure.
Is there a way to either boot my PowerBook or install OSX from my iMac G4?
Message was edited by: rick268 Also, I can boot into Open Firmware just fine.

Thanks for your help.
WeLoveMacs wanted $50, but I just scored an entire topcase on eBay for $15, shipped. We'll see what happens.
Allan Jones wrote:
I maintatined three Wallstreets for a friend for years. They stayed in regular service from new until he replaced them with MacBook Pros last summer!
In the years of keeping the old soldiers almost relavent, I ran into a "won't boot from a system disk" issue on two of them. In both cases, replacing a dead PRAM battery fixed the issue. Don't ask me why but that was the only thing that fixed them.
When I was supporting those, you could still get new Wallstreet batteries from Other World Computing. Today they no longer show them. I'm not sure where to steer your for a new one. USed batteries are like used chewing gum, IMHO.
You can try disconecting the wire from the PRAM battery to the logic board. That might help. Requires some take-down:
http://www.ifixit.com/Device/PowerBook_G3_Wallstreet

After 10.6 security update 2013-002 PGP encrypted disk won't boot

I ran the latest security update on my very old 17" intel MacBook Pro (It won't boot, so I can't give you the model number). It has PGP encryption installed on it, but I only have my passphrase, not the keys since it's a managed system. Half way through the install, it failed with a cryptic error, and the machine won't boot now. It gets half way through booting, and the screen goes black.
I have booted into single user mode, and ran fsck and applejack, only to get an error about a sibling error, and the hard disk is full.
Is this a PGP issue? Does the latest security update conflict with PGP?
I found this resolution to a similar sounding problem in 2010, but am unsure if this is happening now. Google searching hasn't yeilded anything so far.
http://hints.macworld.com/article.php?story=20101111120329585
Thanks for any help.
Melissa

About PGP I can't tell; the hint you linked (and the suggested fix) might still be valid:
PGP recommends folks to decrypt their drives first, update to 10.6.5 and then re-encrypt.
this sounds as a general recommendation.
However fsck reported a sibling error (an invalid link sibling error I presume) and that's not fine. Afaik, Disk Utility can't fix it; DiskWarrior hopefully will. I quote from Alsoft Support Database:
Question
Is DiskWarrior capable of repairing an "Invalid Sibling Link" error?
Answer
This is an error you definitely don't want. It indicates that parts of your directory, and therefore some of your files and folders, are inaccessible.
Mac OS Standard (HFS) and Mac OS Extended (HFS Plus) disk directories have a very complex structure. Each file or folder (item) on a disk has an entry in the disk's directory. These entries are in order of enclosing folder and then item name. This is similar to a yellow pages directory being ordered by type of business and then business name. Just like a yellow pages directory, the disk directory has pages except that its pages are called nodes. Unlike the yellow pages, nodes are dynamic and change as you add and delete items. It's sort of like a realtime yellow pages.
Imagine that the pages of the yellow pages are not in order and at the bottom of each page it says "Continued on page n," where n is the page that contains the next set of listings for the particular type of business that you're looking up. Well nodes are not arranged in order and each node has a reference, or link, to the next node that contains the next set of ordered items. This link is what is referred to as the sibling link.
A sibling link error is a bad link to another node. Either the link refers to the wrong node or it refers to an invalid node. As I said, a sibling link error makes some of your items inaccessible and can even prevent a disk from mounting. Sibling errors are notoriously difficult for some of the patching type of disk repair utilities to repair. Sometimes the repairs fail and the directory is damaged further. If a disk with a sibling link error is still mountable, I would advise backing up the accessible files and folders on the disk before attempting to repair it with that type of disk repair utility.
I'm not really sure DiskWarrior will work on a PGP encrypted disk. According to a few old Google matches, it should. See e.g.:
http://kb.mit.edu/confluence/pages/viewpage.action?pageId=4263350
but according to more recent ones, it won't:
https://discussions.apple.com/thread/2719460?start=0&tstart=0
It seems you're out of luck even with Safe Boot (from PGP Whole Disk Encryption Command Line User's Guide):
The Mac OS X Safe Boot feature does not work on a boot disk that has been whole disk encrypted; if you hold down the Shift key to enter Safe Boot, the system will fail to boot after authenticating at the PGP BootGuard screen.
So, while you're waiting for some more knowledgeable advice, you might backup your data to an external drive while booted in single user mode. There are many how-tos out there; I think this one is pretty clear:
http://jsalovaara.com/blog/backing-up-files-to-a-usb-drive-using-single-user-mod e.html
Hope this helps.

HP Disk Sanitizer won't boot

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