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Satellite L850 & Win 8 UEFi: How dual boot UEFI win 7 ?


ziofrank83

New Member
Posts
6
#1
Hello to the forum. Thanks for the welcome. And thanks for pointing me in this subforum.

I have a notebook toshiba satellite L850-1HU with UEFI

Default is win 8 os, recently upgraded to 8.1.

Now I need to win 7.

I have a professional license N sp1 x64 and then supports UEFI

Is possible to combine the systems in dual boot and both in UEFI mode?

I see from your guides that for installation the UEFI is necessary partition in a certain way.
What should I do if I want to leave intact the UEFI partition of win 8 (5 partition)? I just make only space for win7(1 partition) that will use the same 4 partition UEFI of win 8 or i make other 5 partition???
And which of the two systems will handle the boot? I can decide I?

and the warranty? restores factory work?

If I change hdd, and install win 7, when I put the old hdd, it works as before removing it?

Sorry for the confusion! I hope you manage to understand me and help!

Ciao forum! E grazie! Saluti dall'Italia!
 

My Computer

System One

  • OS
    windows 8.1
    Computer type
    Laptop
    System Manufacturer/Model Number
    Toshiba Satellite L850
    CPU
    Intel i7 3630qm
    Memory
    6Gb (2+4)
    Graphics Card(s)
    ATI Radeon 7670
    Browser
    Firefox
    Antivirus
    no

4wd

New Member
Power User
Posts
375
#2
If I change hdd, and install win 7, when I put the old hdd, it works as before removing it?
Yes. This is how I do any OS tests\'dual boot'\experiments etc with zero chance of damage to the original boot OS\hd. Am keeping a bunch of old HD's for the purpose. The downside is the slight risk for some mechanic\connection problems, just be careful, remember to power down! So if you don't find it troublesome to switch HD's, IMO go ahead and try that route.
 

My Computer

System One

  • OS
    W8.1, W7
    Computer type
    Laptop
    System Manufacturer/Model Number
    HP \ Toshiba \ Lenovo \ Dell E7440
    Browser
    FF

ziofrank83

New Member
Posts
6
#3
This invalidates the warranty?
 

My Computer

System One

  • OS
    windows 8.1
    Computer type
    Laptop
    System Manufacturer/Model Number
    Toshiba Satellite L850
    CPU
    Intel i7 3630qm
    Memory
    6Gb (2+4)
    Graphics Card(s)
    ATI Radeon 7670
    Browser
    Firefox
    Antivirus
    no

4wd

New Member
Power User
Posts
375
#4
^^^ No, unless you break something. Warranty allows for normal upgrading and changes like SSD, MSATA, HD, xtra ram (that's why laptops got covers\slots\easy access to those parts) but any errors done in the process, for example bending contacts, short-circuiting something etc would be ...'very difficult' to claim on any warranty. So just proceed with care & awareness, plan what's to be done, and it'll be fine.
 

My Computer

System One

  • OS
    W8.1, W7
    Computer type
    Laptop
    System Manufacturer/Model Number
    HP \ Toshiba \ Lenovo \ Dell E7440
    Browser
    FF

ziofrank83

New Member
Posts
6
#5
I have done these operations in the past. I'm practical. So UEFI BIOS does not notice the change? Can I keep it active?
 

My Computer

System One

  • OS
    windows 8.1
    Computer type
    Laptop
    System Manufacturer/Model Number
    Toshiba Satellite L850
    CPU
    Intel i7 3630qm
    Memory
    6Gb (2+4)
    Graphics Card(s)
    ATI Radeon 7670
    Browser
    Firefox
    Antivirus
    no

4wd

New Member
Power User
Posts
375
#6
How I do it: to get it to recognize the new OS installation media (USB) etc: disable Secure Boot, boot mode: CSM. To again use the UEFI OS\HD, these settings needs be reverted.

Of course all this not very practical if one is to often change between different OS\HD. I use it for testing purposes, with the goal being able to do any experiment\testing while keeping my original OS\HD 100% untouched.

Attachment, my Tosh 850, new HD fitted, boot > USB W7 install (& W8 UEFI HD with all my files safely out of the way :O)
 

Attachments

My Computer

System One

  • OS
    W8.1, W7
    Computer type
    Laptop
    System Manufacturer/Model Number
    HP \ Toshiba \ Lenovo \ Dell E7440
    Browser
    FF

theog

VIP Member
VIP Member
Gold Member
Posts
5,591
#7
Now I need to win 7.

I have a professional license N sp1 x64 and then supports UEFI

Is possible to combine the systems in dual boot and both in UEFI mode?

YES & NO, down to your UEFI/BIOS firmware setting.

As this is a OEM manufacturer's PC with Pre-installed Windows 8.

1) Downgrade to Windows 7.
http://www.eightforums.com/tutorials/13326-downgrade-windows-8-windows-7-a.html
Warning you must have the UEFI/BIOS firmware setting in Step Three set.

Make sure you read the NOTE at Step three.

2) If Using a USB Pen drive on a PC with a UEFI BIOS.
USB Pen drive need to be formatted to FAT32 as in
http://www.eightforums.com/tutorials/15458-uefi-bootable-usb-flash-drive-create-windows.html
Take note of Step 11 for Windows 7.
Also you will need to use a USB 2.0 port, as there are no USB 3.0 drivers in Windows 7.
 

My Computer

System One

  • OS
    ME, XP,Vista,Win7,Win8,Win8.1
    Computer type
    PC/Desktop
    Other Info
    Notebooks x 3

    Desktops x 5

    Towers x 4

theog

VIP Member
VIP Member
Gold Member
Posts
5,591
#8
From Toshiba Support site.

How to enable CSM for a Toshiba.(Satellite Pro C870, Satellite Pro L830, Satellite Pro C850, Satellite Pro R950, Portege R930, Portege Z930)

Toshiba said:
To downgrade from a installed Windows 8 OS to a Windows 7 OS, using a Windows 7 recovery media, follow these steps:

1) Boot unit and press F2 to get into BIOS

2) Go to "Security" tab and disable "Safe Boot"

3) Go to "Advanced" tab, select "System Configuration" then change boot mode from "UEFI" to "CSM"

4) Press F10 to save changes and exit.

5) Boot unit from recovery media (Press F12 on bootup to boot from USB or DVD media)
 

My Computer

System One

  • OS
    ME, XP,Vista,Win7,Win8,Win8.1
    Computer type
    PC/Desktop
    Other Info
    Notebooks x 3

    Desktops x 5

    Towers x 4

ziofrank83

New Member
Posts
6
#9
So I have to necessarily lose the current configuration of win 8?


Downgrade oem win 8 to win 7 and after partitioning out and install in 8: in a nutshell this is what I need to do?
 

My Computer

System One

  • OS
    windows 8.1
    Computer type
    Laptop
    System Manufacturer/Model Number
    Toshiba Satellite L850
    CPU
    Intel i7 3630qm
    Memory
    6Gb (2+4)
    Graphics Card(s)
    ATI Radeon 7670
    Browser
    Firefox
    Antivirus
    no

theog

VIP Member
VIP Member
Gold Member
Posts
5,591
#10
So I have to necessarily lose the current configuration of win 8?


[DEL]Downgrade oem win 8 to win 7 and after partitioning out and install in 8: in a nutshell this is what I need to do?[/DEL]
Base YES. Both Windows 7 x64 & Windows 8/8.1 x64 will need be installed in LEGACY mode.
 

My Computer

System One

  • OS
    ME, XP,Vista,Win7,Win8,Win8.1
    Computer type
    PC/Desktop
    Other Info
    Notebooks x 3

    Desktops x 5

    Towers x 4
Posts
6
#11
Thanks! This is the answer I was looking for. I'll wait for the end of the warranty, and I change hdd!
 

My Computer

System One

  • OS
    windows 8.1
    Computer type
    Laptop
    System Manufacturer/Model Number
    Toshiba Satellite L850
    CPU
    Intel i7 3630qm
    Memory
    6Gb (2+4)
    Graphics Card(s)
    ATI Radeon 7670
    Browser
    Firefox
    Antivirus
    no