Solved What's a good way to read data on GPT disk from an OS MBR computer?

siliconbeaver

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I run into this problem.

when disposed old computers, on some of them, I removed and kept the old (GPT) disks. now I need the data on a GPT disk. but my present computers are with MBR format.

I tried to connect the GPT disk to internally an MBR system. the computer couldn't boot at all. seems, at least, I have to wipe out the GPT OS first. that's too much change. another way is to convert GPT to MBR using DiskGenius.

Any good way to read data on GPT disk from an OS MBR computer?
If I put the GPT disk into an enclosure. will it be accessible from an MBR computer?
 

My Computers My Computers

  • At a glance

    Windows 7 Pro 64-bitI7-970032 GB
    Computer type
    PC/Desktop
    Computer Manufacturer/Model Number
    HP Elite 800 G5
    OS
    Windows 7 Pro 64-bit
    CPU
    I7-9700
    Memory
    32 GB
  • At a glance

    Windows 7 Pro 64-bit
    Computer type
    Laptop
    System Manufacturer/Model Number
    ASUS UX305C
    OS
    Windows 7 Pro 64-bit
If I put the GPT disk into an enclosure. will it be accessible from an MBR computer?

Yes, it should be. According to Wikipedia on GPT type partitions, Windows 7 can read/write to a GPT formatted dive, just not boot from a GPT formatted drive unless it uses UEFI.


Instead of an external enclosure, you should be able to connect the drives directly inside the computer via SATA cable and read them in the MBR formatted operating system. I'm assuming in your case Windows 7. You just can't boot them unless you use UEFI.

Further, you can't boot Windows 7 32 bit using a GPT formatted drive. Only in Windows 7 64 bit and in UEFI.
 

My Computer My Computer

At a glance

Windows 7 Ultimate x64
Computer type
PC/Desktop
OS
Windows 7 Ultimate x64
Thanks,

my mistake was using a 32-bit computer. as you pointed out, it failed.

I will re-try with your tips. I have Windows 7 64-bit (CSM/UEFI boot) and an external enclosure ready.
 

My Computers My Computers

  • At a glance

    Windows 7 Pro 64-bitI7-970032 GB
    Computer type
    PC/Desktop
    Computer Manufacturer/Model Number
    HP Elite 800 G5
    OS
    Windows 7 Pro 64-bit
    CPU
    I7-9700
    Memory
    32 GB
  • At a glance

    Windows 7 Pro 64-bit
    Computer type
    Laptop
    System Manufacturer/Model Number
    ASUS UX305C
    OS
    Windows 7 Pro 64-bit
Thanks,

my mistake was using a 32-bit computer. as you pointed out, it failed.

I will re-try with your tips. I have Windows 7 64-bit (CSM/UEFI boot) and an external enclosure ready.

Something is wrong.
Win 7 32 bits can read and write to GPT drives.
 

My Computers My Computers

  • At a glance

    Windows 7 HP 64i5 6600K - 800MHz to 4200MHz4+4G GSkill DDR4 3000IG - Intel 530
    Computer type
    PC/Desktop
    Computer Manufacturer/Model Number
    custom build
    OS
    Windows 7 HP 64
    CPU
    i5 6600K - 800MHz to 4200MHz
    Motherboard
    GA-Z170-HD3P
    Memory
    4+4G GSkill DDR4 3000
    Graphics Card(s)
    IG - Intel 530
    Monitor(s) Displays
    Samsung 226BW
    Screen Resolution
    1680x1050
    Hard Drives
    (1) -1 SM951 – 128GB M.2 AHCI PCIe SSD drive for Windows 7 and Lubuntu
    (2) -1 WD SATA 3 - 1T for Data
    (3) -1 WD SATA 3 - 1T for backup
    PSU
    Thermaltake 450W TR2 gold
    Keyboard
    Old and good Chicony mechanical keyboard
    Mouse
    Logitech mX performance - 9 buttons (had to disable some)
    Internet Speed
    500Mb/s
    Browser
    Firefox 64
    Other Info
    TinyWall firewall
  • At a glance

    Windows 7 Proi7-4500U 800MHz to 3.0GHz(4+4)G DDR3 1600IG intel 4400 + NVIDIA GeForce GT 745M
    Computer type
    Laptop
    System Manufacturer/Model Number
    Asus Q550LF
    OS
    Windows 7 Pro
    CPU
    i7-4500U 800MHz to 3.0GHz
    Motherboard
    Asus Q550LF
    Memory
    (4+4)G DDR3 1600
    Graphics Card(s)
    IG intel 4400 + NVIDIA GeForce GT 745M
    Sound Card
    Realtek
    Monitor(s) Displays
    LG Display LP156WF4-SPH1
    Screen Resolution
    1920 x 1080
    Hard Drives
    BX500 120G SSD for Windows and programs +
    1T HDD for data
    Internet Speed
    500 Mb/s
    Browser
    Firefox
    Other Info
    TinyWall firewall
you should be able to connect the drives directly inside the computer via SATA cable and read them in the MBR formatted operating system. I'm assuming in your case Windows 7. You just can't boot them unless you use UEFI.

Further, you can't boot Windows 7 32 bit using a GPT formatted drive. Only in Windows 7 64 bit and in UEFI.

Thanks,

This way is working. the data is accessible on a Windows 7 64x

- - - Updated - - -

Something is wrong.
Win 7 32 bits can read and write to GPT drives.

wasn't sure where I did wrong. it couldn't boot just kept beeping. . .
 

My Computers My Computers

  • At a glance

    Windows 7 Pro 64-bitI7-970032 GB
    Computer type
    PC/Desktop
    Computer Manufacturer/Model Number
    HP Elite 800 G5
    OS
    Windows 7 Pro 64-bit
    CPU
    I7-9700
    Memory
    32 GB
  • At a glance

    Windows 7 Pro 64-bit
    Computer type
    Laptop
    System Manufacturer/Model Number
    ASUS UX305C
    OS
    Windows 7 Pro 64-bit
Any good way to read data on GPT disk from an OS MBR computer?
If I put the GPT disk into an enclosure. will it be accessible from an MBR computer?

- Win 7 32 or 64 bits can read and write data on a GPT drive in any computer with Legacy or UEFI BIOS.
- A GPT drive can only boot on a 64 bits OS (Windows Linux etc) with UEFI BIOS
 

My Computers My Computers

  • At a glance

    Windows 7 HP 64i5 6600K - 800MHz to 4200MHz4+4G GSkill DDR4 3000IG - Intel 530
    Computer type
    PC/Desktop
    Computer Manufacturer/Model Number
    custom build
    OS
    Windows 7 HP 64
    CPU
    i5 6600K - 800MHz to 4200MHz
    Motherboard
    GA-Z170-HD3P
    Memory
    4+4G GSkill DDR4 3000
    Graphics Card(s)
    IG - Intel 530
    Monitor(s) Displays
    Samsung 226BW
    Screen Resolution
    1680x1050
    Hard Drives
    (1) -1 SM951 – 128GB M.2 AHCI PCIe SSD drive for Windows 7 and Lubuntu
    (2) -1 WD SATA 3 - 1T for Data
    (3) -1 WD SATA 3 - 1T for backup
    PSU
    Thermaltake 450W TR2 gold
    Keyboard
    Old and good Chicony mechanical keyboard
    Mouse
    Logitech mX performance - 9 buttons (had to disable some)
    Internet Speed
    500Mb/s
    Browser
    Firefox 64
    Other Info
    TinyWall firewall
  • At a glance

    Windows 7 Proi7-4500U 800MHz to 3.0GHz(4+4)G DDR3 1600IG intel 4400 + NVIDIA GeForce GT 745M
    Computer type
    Laptop
    System Manufacturer/Model Number
    Asus Q550LF
    OS
    Windows 7 Pro
    CPU
    i7-4500U 800MHz to 3.0GHz
    Motherboard
    Asus Q550LF
    Memory
    (4+4)G DDR3 1600
    Graphics Card(s)
    IG intel 4400 + NVIDIA GeForce GT 745M
    Sound Card
    Realtek
    Monitor(s) Displays
    LG Display LP156WF4-SPH1
    Screen Resolution
    1920 x 1080
    Hard Drives
    BX500 120G SSD for Windows and programs +
    1T HDD for data
    Internet Speed
    500 Mb/s
    Browser
    Firefox
    Other Info
    TinyWall firewall
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