Will resetting the BIOS/CMOS erase or corrupt my 3 harddrive RAID 5 array?

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MnMWizard

MnMWizard

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Mar 9, 2016
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I have a PC that has motherboard(h97 chipset) raid support and 3 1 TB hard drives set up in RAID 5. The PC is now stuck in a boot loop, going from loading windows (10) to crashing and repeating, and I think BIOS isn't properly recognizing the hard drives as a boot option. Would taking the little battery out, resetting the CMOS, corrupt or lose the data in the array ( I sort of need it)? Thanks!
 
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M
You're kind of in a stuck position unfortunately. Technically speaking though, if you flash/clear your BIOS just make sure you jump straight in to the BIOS immediately after and don't let it try to boot an OS because your BIOS is going to default your SATA controller to AHCI. After getting in the BIOS set your SATA controller back to RAID mode and then boot and pray.

The RAID data should be stored on the disks so the chipset RAID controller should pick the RAID right back up.

Let me ask though: Is your RAID array your boot drive? If so, and you go in the BIOS, is it showing the array as a bootable option under the boot section? If so, then the chipset is presenting the RAID properly. ss202sl may be correct and its just a windows...
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MnMWizard

MnMWizard

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Mar 9, 2016
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Well after it crashes it BSODs and then I get to the startup options thing where I can choose to restart or reset, do diagnostics etc. Start up repair didn't work and neither did doing diagnostics. We have it backed up to a point but not within the last month, I can't reset it because we have some pictures we would lose.
 
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marko55

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Nov 29, 2015
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You're kind of in a stuck position unfortunately. Technically speaking though, if you flash/clear your BIOS just make sure you jump straight in to the BIOS immediately after and don't let it try to boot an OS because your BIOS is going to default your SATA controller to AHCI. After getting in the BIOS set your SATA controller back to RAID mode and then boot and pray.

The RAID data should be stored on the disks so the chipset RAID controller should pick the RAID right back up.

Let me ask though: Is your RAID array your boot drive? If so, and you go in the BIOS, is it showing the array as a bootable option under the boot section? If so, then the chipset is presenting the RAID properly. ss202sl may be correct and its just a windows corruption you need to figure out.
 
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