I updated my BIOS x99 recently, then grub wasn't loading in the bootloader, so I reinstalled grub via usb containing arch linux install, and all was good again... I thought.I've been experiencing intermittent - could be 1 hour or 1 day, read only filesystem errors since the reinstall of grub. These errors occur while doing work - not after booting.So I ran dmesg | grep EXT4-fs error and found 4 entries for memory block errors. Did a bit more work then it locked me out again, except when I logged in this time, it forced into using fsck to fix the filesystem.Well it worked initially but I just experienced the issue again - except this time the dmesg command lists no ext4 errors.Running dmesg I have this at the end:[  500.779206] pcieport 0000:00:01.1: AER: Uncorrected (Fatal) error received: id=0009[  500.779212] pcieport 0000:00:01.1: PCIe Bus Error: severity=Uncorrected (Fatal), type=Transaction Layer, id=0009(Receiver ID)[  500.779216] pcieport 0000:00:01.1:   device [8086:2f03] error status/mask=00000020/00000000[  500.779219] pcieport 0000:00:01.1:    [ 5] Surprise Down Error    (First)[  500.779222] pcieport 0000:00:01.1: broadcast error_detected message[  500.779225] nvme nvme0: frozen state error detected, reset controller[  501.841611] pcieport 0000:00:01.1: Root Port link has been reset[  501.841616] pcieport 0000:00:01.1: broadcast slot_reset message[  501.841620] nvme nvme0: restart after slot reset[  501.841673] pcieport 0000:00:01.1: broadcast resume message[  501.841677] pcieport 0000:00:01.1: AER: Device recovery successful[  502.798322] sed_opal:OPAL: Error on step function: 0 with error 8194: Unknown ErrorI've checked my fstab and it is ok.Running fsck -n /dev/my-partition yields Arch Linux: clean...]My install is working at this moment but I have no reason to believe it will continue. I was thinking of upgrading all packages but I'm worried of the possibility of it going read-only during and bricking it.Any advice?Edit: After posting it just got serious - disk went read only and now my entire ssd disk is not showing in fdisk and I can't even boot into windows!Edit2: SSD popped back up, ran fsck on both the efi partition (said 1 dirty bit and fixed) and the linux partition (nothing). Loaded up linux, got the ext4 errors again. Rebooted into usb, ran fsck again on linux and it cleaned up stuff. Went back into BIOS and now SSD is gone again. It came back up after some time and now trying to boot windows yields Unmountable boot volume
Intermittent read-only root filesystem error - now SSD is missing
arch linux;filesystems;readonly