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Is it possible to get rid of GPT in Win 8 system disk?

  1. #1

    Is it possible to get rid of GPT in Win 8 system disk?


    I have read as much as I can in this forum, seems like some have been successful converting GPT partitions to MBR. I'm still trying to get TrueCrypt to run on my Fujitsu Win 8 laptop with GPT. TrueCrypt does not currently support GPT, and it looks doubtful if it ever will.

    I have spent some time creating image files and restoring them with True Image 2013. I have not found a way with that program to get Win 8 to be formatted as MBR.

    Any ideas? Thanks.

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  2. #2


    Posts : 1,925
    Windows 8.1 Pro


    Why don't you use BitLocker instead? It's built in and works quite well.
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  3. #3


    Posts : 5,360
    7/8/ubuntu/Linux Deepin


    You can a program to do it.

    Not free though.

    Looks like the trial version has that function. Paragon Backup & Recovery Home - Backup and restore partitions, hard disks or files
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  4. #4


    Quote Originally Posted by Mystere View Post
    Why don't you use BitLocker instead? It's built in and works quite well.
    I've been unsuccessful to upgrade to Win 8 Pro, please see

    Not able to install Win 8 Pro
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  5. #5


    Hafnarfjörður IS
    Posts : 4,376
    Linux Centos 7, W8.1, W7, W2K3 Server W10


    Quote Originally Posted by captnorm View Post
    I have read as much as I can in this forum, seems like some have been successful converting GPT partitions to MBR. I'm still trying to get TrueCrypt to run on my Fujitsu Win 8 laptop with GPT. TrueCrypt does not currently support GPT, and it looks doubtful if it ever will.

    I have spent some time creating image files and restoring them with True Image 2013. I have not found a way with that program to get Win 8 to be formatted as MBR.

    Any ideas? Thanks.
    Hi there
    First look and see if you have SECURE BOOT enabled in the BIOS. If so that's the first thing you'll have to undo in the BIOS.

    Then backup your system -- things can and do go wrong so if you hose it up you'll be able to restore it all again, have a think, preferably a stiff drink as well and then have another go.

    Next you will need to boot up another system -- say a stand alone partition manager to convert the GPT disk as you won't be able to convert the GPT disk to MBR "On the fly" if it's a system disk.

    Simply from the stand alone partition manager wipe the disk and create an MBR then create partitions as needed.

    Now restore your system.

    it will BSOD on boot (MBR will be hosed) but insert the W8 recovery disk and it will "fix itself".

    Now I have to ask --why change back to MBR -- GPT is so much better in zillions of ways -- usually it's the Secure / Protected boot mode that causes all the grief not the issue of GPT.

    Incidentally if you ever partition disks of over 2 TB (and 3 TB disks are quite common these days) you'll need to make the GPT anyway and you might have a small OS partition on one of these disks which will only boot if it IS GPT.

    GPT also doesn't limit the number of partitions you can have either.

    Finally you shouldn't limit yourself to old applications when running a newer OS -- if Truecrypt doesn't work there are plenty of better alternatives (Free). Bitlocker is one -- you do need W8 PRO though.

    In any case I have to wonder what the real use of these encryption systems are -- if you protect your machine decently then IMO this stuff isn't necessary. If you are paranoid about data falling in to the wrong hands if your computer is stolen -- either store it offline or encrypt with decent SES encryption programs.

    If you share your computer with other users then store private and personal data offline. Almost ANY encryption system of less than Militiary strength is hackable one way or another.


    Cheers
    jimbo
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  6. #6


    Fascinating idea, Thanks for all the detail.

    I have done a few restores, got BSOD, never thought of a repair.

    I have read the advantages of GPT over MBR and for many cases, GPT is better. In my case it doesn't make much difference. I have a 750GB laptop drive so > 2TB is not important for me. I only need a C & a D partition, maybe a few hidden ones.

    I do agree GPT provides "greater resilience to corruption". In my particular case I personally prefer being able to encrypt my C partition.

    The original Fujitsu image has 6 partitions: 768mB recovery, 768mB oem, 260mB efi system partition (think), 2 @ 341gB c & d, 15gB recovery. Assuming I can get the drive converted to MBR, would I need to restore all partitions, one at a time (not Clone Disk) except the recovery?

    The other unknown for me, of course, I did not get a Win 8 distribution disk of this Fujitsu dialect. Would a bootable Win 8 Pro distribution DVD be able to repair the MBR clone? My feeling is it would.

    This may be "old school", but I personally feel all laptops (because they travel so much) should be encrypted with a 20 character a/numeric with punctuation... password. This way the web sites I'm logged onto (including gmail) would probably never fall in bad hands. There are too many cookies and documents in that C partition. I do keep all my very sensitive documents inside a large TrueCrypt file which I can open in Win 8. This is my "at home" strategy which also works on my laptops. My other XP & Win 7 laptops all encrypt the whole C partition by TC. I'm also aware any lock can be picked by a very clever person. I'm just taking as many precautions as I can with my cookies...

    I would be happy to use BitLocker on this machine (to keep the resilience of GPT). I have used a brand new hard drive and installed Technet Win 8 Pro on this same Fujitsu laptop. I can't believe it, but it went thru the entire install procedure, never asked for the product keys. When the new image reboot, it was already activated, with, I think my original Fujitsu product keys. Even though I installed the Pro ISO, I still got the basic Win 8, with no BitLocker. I'm thinking the product keys are stored in the BIOS, any other ideas?

    Btw, I recently bought 3 @ 20" SATA EXTENSION cables from Amazon. 1 @ data only, 1 @ hard drive power, 1 @ both data & power extension. Makes it very easy & quick to swap laptop HD. I can even use a 7200 rpm 3.5" hd on this laptop with an externally powered docking station for my experiments.
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  7. #7


    OK, I cloned my original Fujitsu image (with all partitions) to a 3.5" drive with Acronis 2013. Clone boots fine.

    I then put that on my desktop as a non-system disk, can see it fine in Disk Management. I followed both options in:
    Convert GPT Disk to MBR Disk - Windows 7 Forums

    I eventually deleted most partitions, but can't yank the 260mB EFI System Partition thru either option.

    Question, if I ran WhiteCanyon's wipedrive on a scratch drive, all partitions and everything would be deleted on the drive.

    I should then be able to boot XP (or DOS) (that has no GPT, only MBR) and create partitions. Problem is I don't know which partitions to create. As I mentioned before:
    The original Fujitsu image has 6 partitions: 768mB recovery, 768mB oem, 260mB efi system partition (think), 2 @ 341gB c & d, 15gB recovery.

    I guess I could create 2 @ 768mB, 260mB... partitions. Problem is I don't know which be primary, extended, logical partitions. At this point I don't need the 15gB recovery, nor D 341 partition (can create those later).

    Do you have any recommendations as to the partitions and type I need to create?

    Thanks, Norm
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  8. #8


    Quote Originally Posted by captnorm View Post

    I would be happy to use BitLocker on this machine (to keep the resilience of GPT). I have used a brand new hard drive and installed Technet Win 8 Pro on this same Fujitsu laptop. I can't believe it, but it went thru the entire install procedure, never asked for the product keys. When the new image reboot, it was already activated, with, I think my original Fujitsu product keys. Even though I installed the Pro ISO, I still got the basic Win 8, with no BitLocker. I'm thinking the product keys are stored in the BIOS, any other ideas?


    All OEM installs, the product key is in the bios with Win8.
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  9. #9


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    I would follow peka in this thread.
    Upgrade Win 8 OEM to Win 8 Pro + MS Office
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  10. #10


    Quote Originally Posted by theog View Post
    I would follow peka in this thread.
    Upgrade Win 8 OEM to Win 8 Pro + MS Office
    I've thought about that. Shopping around looks like least expensive is $65. That seems quite disproportionate considering this 750GB 15.6" laptop with 6GB ram, basic Win 8... ... only cost me $350 after rebate. Especially after reading the following reviews, that is my last choice:
    Amazon.com: Customer Reviews: Microsoft Windows 8 Pro Pack (Win 8 to Win 8 Pro Upgrade)
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