F5F Stay Refreshed Software Operating Systems Additional three hard drives aren't functioning as boot devices while the SteamOS drive is connected during startup.

Additional three hard drives aren't functioning as boot devices while the SteamOS drive is connected during startup.

Additional three hard drives aren't functioning as boot devices while the SteamOS drive is connected during startup.

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Brandon_En
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08-26-2016, 07:10 PM
#1
I set up steamOS from a USB, removed my three drives beforehand to avoid conflicts. I wanted to keep things stable, knowing poor installers can break booting. The empty hard drive had no files, which made things worse. After reinstalling, I tried booting but the BIOS didn’t recognize the other drives as boot options. It showed SteamOS first, then nothing else. I’m stuck—can’t use steamOS and can’t access other drives.
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Brandon_En
08-26-2016, 07:10 PM #1

I set up steamOS from a USB, removed my three drives beforehand to avoid conflicts. I wanted to keep things stable, knowing poor installers can break booting. The empty hard drive had no files, which made things worse. After reinstalling, I tried booting but the BIOS didn’t recognize the other drives as boot options. It showed SteamOS first, then nothing else. I’m stuck—can’t use steamOS and can’t access other drives.

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bobhackman1
Junior Member
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08-26-2016, 08:21 PM
#2
You must format the drive and create a new partition.
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bobhackman1
08-26-2016, 08:21 PM #2

You must format the drive and create a new partition.

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Nejc007
Senior Member
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707
08-27-2016, 04:01 AM
#3
The UEFI interface lists partitions it identifies as compatible with UEFI booting, which may not always correspond to separate drives. Choose the UEFI operating system and you should access the desired OS.
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Nejc007
08-27-2016, 04:01 AM #3

The UEFI interface lists partitions it identifies as compatible with UEFI booting, which may not always correspond to separate drives. Choose the UEFI operating system and you should access the desired OS.

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Fishbite101
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08-27-2016, 05:43 AM
#4
It's possible your system is configured to start both UEFI and older boot methods, but it favors UEFI if one exists. Verify this by booting Windows (unplug the Steamos drive) and observing whether it boots into UEFI or another method. If not, adjust your BIOS settings to set the storage device boot option to legacy instead of UEFI. This ensures only non-UEFI systems are used. Note that enabling legacy mode removes features like secure boot, making your Windows setup less optimal. Refer to the screenshot for a clearer illustration.
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Fishbite101
08-27-2016, 05:43 AM #4

It's possible your system is configured to start both UEFI and older boot methods, but it favors UEFI if one exists. Verify this by booting Windows (unplug the Steamos drive) and observing whether it boots into UEFI or another method. If not, adjust your BIOS settings to set the storage device boot option to legacy instead of UEFI. This ensures only non-UEFI systems are used. Note that enabling legacy mode removes features like secure boot, making your Windows setup less optimal. Refer to the screenshot for a clearer illustration.

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thomasladd907
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09-01-2016, 12:38 PM
#5
Occasionally when I restored the steamOS drive, everything worked perfectly and I managed to fix it in Windows with diskpart... unusual.
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thomasladd907
09-01-2016, 12:38 PM #5

Occasionally when I restored the steamOS drive, everything worked perfectly and I managed to fix it in Windows with diskpart... unusual.

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