Convert mbr to gpt on win 10 OS already loaded to use UFEI bios

Discussion in 'backup, imaging & disk mgmt' started by Tyreman, Nov 16, 2019.

  1. Tyreman

    Tyreman Registered Member

    Joined:
    Feb 3, 2003
    Posts:
    144
    Location:
    Cambridge Ontario,Canada
    I did an Window 10 OS re load onto new SSD and forgot to change bios to UFEI(duh)
    It got left on "Legacy and UFEI" setting(2 bios possibilities UFEI only and that)
    I checked msinfo32 and it shows Legacy now
    Is it possible to safely change over to gpt without data loss then reboot computer and select UFEI in bios
    before windows 10 starts or no
    That way keeping the OS without reinstalling or no?
    I see Aomei partition pro indicates that it can be done by a few click without data loss
    Any suggestions
    Thanks in advance
     
  2. Brian K

    Brian K Imaging Specialist

    Joined:
    Jan 28, 2005
    Posts:
    10,704
    Location:
    NSW, Australia
    I haven't tried the AOMEI conversion. The TeraByte Unlimited MBR to GPT conversion works every time. No data loss.
     
  3. Tyreman

    Tyreman Registered Member

    Joined:
    Feb 3, 2003
    Posts:
    144
    Location:
    Cambridge Ontario,Canada
    Thank you Sir!!!!
     
  4. Tyreman

    Tyreman Registered Member

    Joined:
    Feb 3, 2003
    Posts:
    144
    Location:
    Cambridge Ontario,Canada
    Here is what I wound up doing and it worked:
    I used MBR2GPT on Win 10
    settings>security>recovery>advanced startup>click on restart now>then click troubleshoot now>then click on advanced options>then click command prompt option
    select admin account , enter password then
    typed mbr2gpt /validate
    enter
    validated was good to go!
    then typed mbr2 /convert
    enter
    successful
    closed out of that>turn off computer
    then restart > hit delete >enter bios set to UFEI from Legacy/UFEI
    save and reboot
    on desktop
    cross fingers!

    all good!!!

    I had everything backed up
     
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