Windows 10 Pro Installation Issue: BitLocker Encryption Hurdle on ThinkPad L580

Question

Hi, I have a problem installing Windows 10 Pro on my new ThinkPad L580. I mixed it up a bit (I installed Ubuntu, then I deleted the Linux partition and as a result the computer doesn't see GRUB at startup and doesn't run anything). I have already created the Win10 installation disk. It...

Brivido · Accepted Answer

Delete 1, 2 and 3 3 partitions, then create a new one in their place and install on it. Not too small is this 4?

safbot1st · Accepted Answer

Rather yes. In Mint there is still handmade from what I remember. These were beautiful normal times ... Yes, you can start by deleting all partitions. I don't have info with Bitlocker. However, you must decide what to boot. Like CSM, it's MBR and NTFS partitions. How UEFI is GPT. At this stage, I finished my education with installing modern OS. There are guides on the network on how to prepare a recovery partition. I did not try.

safbot1st · Accepted Answer

In short, to handle more larger partitions and boot faster. In addition to a ton of documentation, what UEFI is. You probably had it at the factory.

arigato · Accepted Answer

If I'm not mistaken, GPT refers to the secondary partition that OS creates during installation. This requires different settings in the BIOS. It's possible that at a friend's are set as essential. And this affects the later start of the system. Only one (installed with this setting) will be running. I don't know what it would look like if you tried to install a virtual machine. There may be a problem.
There will be CSM for MBR. This setting will probably make more sense when we choose ATA instead of AHCI for the hard disk.

4m4ru · Answer

So just select and remove them during installation? And it won't stick to this BitLocker?
Will they be created automatically when installing Windy? EFI partition etc.?
I would not like to remove too much so that I could somehow put everything on my feet ...

I don't know if 4 is too small. That's how it came from the factory

safbot1st · Answer

Press F9 to start and use WinRE to recover the system. That's what it's for

4m4ru · Answer

Well, I'm trying to read somewhere whether it is possible to boot or restore systems from this Recovery partition from the command window, because I can't get to Windows.
F9 does not work, the "Regulatory information" screen appears.

safbot1st · Answer

And F11?

4m4ru · Answer

on F11 does not respond at all ... Because in general I can get to the console, but I don't know how to start the installation from this recovery partition ....

safbot1st · Answer

Try other Fs, but in that case I assume that you have damaged recovery with linux or by partitioning it. Totally normal.

You see, in my place I would restore the linux partition and upload GRUB again.
Thanks to this, you will probably be able to boot windows through GRUB, and linux will definitely be useful more than once.
If you don't want GRUB or linux, then you should format the whole disk and create the system partition in the windows installer, then install "from scratch".

4m4ru · Answer

Then tell me if I am thinking right:
1. I start the Windy installation from a USB drive
2. I delete partitions: 1, 2, 3 (I don't know if it won't stick to BitLocker here?)
3. I continue to install as instructed (will these EFI and other partitions be created during installation? Nothing mixed up?

Recently I installed windows, if there were no inventions like SSD or UEFI and GPT ...
In fact, can I throw out all partitions and install EFI to create EFI, MSR, etc.? and I will possibly create a partition for a clean system image and after the installation I will shed it there to have in case of trouble?

What about reinstalling Ubuntu - should I choose the "Install next to Win" option? I don't think I had another one there.

4m4ru · Answer

Hmm ... And what boils down to such a general choice? Since I have UEFI, it's probably the second option?

4m4ru · Answer

Ok, I dealt with it.
First of all - when installing Windows, I deleted the partition with the system (there was no problem with BitLocker, I could normally delete it).
Secondly - from the unallocated space created in this way I created a new NTFS partition and then follow the installation steps.

After installation, the partitions are as follows:
260MB - EFI partition
237.23 GB - partition with Win system
1000MB - recovery partition (currently empty) I don't know if it was left after the previous installation or when installing Windows, it cleared it, because before it had some 530MB of data and I didn't do anything with it.

This MSR partition is not present.

Also thanks a lot for all the help and tips.

safbot1st · Answer

Enter in CMD reagentc / info and post the result. By. for me this is not a WinRe bootable partition, only the partition where the restore points will be saved. And it is too small. Legible Recovery with an OS image should be ~ 3.5GB. I don't know how much you care how you feel about creating manual recovery. I am happy to learn, but when I look at the guides they look like a recipe for breaking the system :

Name	Overall size	Free space	Type
Disk 0 Partition 1: SYSTEM	260MB	222MB	System
Disk 0 Partition 2	16MB	16MB	IAS (Reserved)
Disk 0 Partition 3	237,2GB	0MB	System
Disk 0 Partition 4: WinRE_DRV	1000MB	598MB	retrieval

Windows 10 Pro Installation Issue: BitLocker Encryption Hurdle on ThinkPad L580

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