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22 16 1 8
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Solved!

HP product: HP EliteDesk 800 G2 DM 35W Cant boot Windows from UEFI Boot menu

HP Recommended
HP product: HP EliteDesk 800 G2 DM 35W
Microsoft Windows 10 (64-bit)

Installed Windows 10, then Fedora on the internal 256GB SSD, then Ubuntu on an external USB HDD. UEFI boot menu (F9) only shows Fedora and Ubuntu; Windows 10 does not show up.  Running efibootmgr as root from Fedora shows as below. How to get Windows boot option back, preferably without wiping the SSD? Uefi is HP v: N21 Ver. 02.49.
date: 07/13/2020 

 

/boot/efi/EFI# efibootmgr
BootCurrent: 0010
Timeout: 0 seconds
BootOrder: 0010,0004,0007,000E,000B,000C,0000,0001,0002,0003,0006,0008,0009,000F
Boot0000 Startup Menu
Boot0001 System Information
Boot0002 Bios Setup
Boot0003 3rd Party Option ROM Management
Boot0004* ubuntu
Boot0006 System Diagnostics
Boot0007* TOSHIBA External USB 3.0 20171217003012F
Boot0008 Boot Menu
Boot0009 HP Recovery
Boot000B* KingFast :
Boot000C* Intel Corporation: IBA CL Slot 00FE v0112
Boot000D* TOSHIBA External USB 3.0 20171217003012F
Boot000E* USB:
Boot000F Network Boot
Boot0010* Fedora
Boot0012* IPV6 Network - Intel(R) Ethernet Connection (H) I219-LM

2 REPLIES 2
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@RockDoctor 

I'm sorry, but HP only warranties their PCs for usage with the OS that comes preinstalled.

IF you replace that with a Linux distro, or add a Linux distro, then you assume full responsibility for maintaining that -- including solving any problems with booting the other OS and/or installing the other OS.

Your best bet for support now is to contact the support forum of the distro you are using.

***If my post helped, click the White thumbs-up symbol to say thanks***

***Please mark Accept As Solution if my post solved your problem***

I am a volunteer and I do not work for, nor represent, HP
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Level 3
22 16 1 8
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I realize HP doesn't cover the type of abuse modifications to which I subject my computers, but was hoping someone reading my post might have a solution. As it turns out, the problem appears to be solved, but I'm not sure why. Here's what I (think I) did, just in case someone, somewhere encounters the same problem:

1. Boot into Windows on the SSD via grub2 menu

2. Create Recovery USB (should have done this as soon as I received the computer, but didn't)

3. Boot Recovery USB. System apparently booted into Windows on the SSD

4. Shut down system

5. Boot into UEFI menu; go to Boot Options - lo and behold, the first entry is now for Windows on the SSD

 

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