Well the error messages say there's a physical problem with /dev/sda1. Is that part of the RAID set? If, after using emergency mode, you run
Code:
mdadm --detail /dev/md*
what do you see? Is /dev/sda1 marked as faulty? If not, you might be able to get things running with
Code:
mdadm /dev/mdX --fail /dev/sda1
mdadm /dev/mdX --remove /dev/sda1
Replace mdX with the appropriate name for the RAID device on your system like md0 or md127. If the drive is already marked as faulty, you can skip the "--fail" step.
Make sure you have a replacement drive handy, since you'll lose all the data if a second drive fails in a RAID5 setup.
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