HP servers (all except HP Microserver G7 and G10) have the option to either completely disable all external USB ports, or disable the option to boot server from them.
Solution: go to BIOS settings (press F9 during boot) and check these 2 options:
This problem is related mostly to HP Smart Array P410 RAID controller. Fortunately, this controller is used almost exclusively for Windows+RAID1 configurations.
Solution 1: open the server front panel and remove the drive(s). Connect them to normal desktop computer and run Drive Badger there:
mdadmtool may be required
Solution 2: download and install the latest version of
ssacli package from this page (latest version here), and try to assemble the original RAID manually (don't try this, if you don't know this tool).
DMAR: [DMA Read] Request device [01:00.2] PASID ffffffff fault addr f1fe4000 [fault reason 06] PTE Read access is not set DMAR: DRHD: handling fault status reg 2 dmar_fault: 18311 callbacks suppressed
Solution: switch to root on console, and run:
sysctl -w kernel.printk="3 4 1 3"
This won't fix the source problem, but should stop further flooding the console.