Solution IoTBoI Posted January 18, 2022 Solution Share Posted January 18, 2022 (edited) Hi all I have been using Unraid for years and I just had my first kernel panic. Let me know if anyone knows how to fix this issue. Thanks /dev/root: Can't open blockdev UFS: Cannot open root device "(null)" or unknown-Block(0,0): error Please append a correct "root=" boot option: here are the available partitions: 0800 1957888 sda driver: sd 0801 1957872 sda1 c3072e18-01 Kernel panic - not syncing: UFS: Unable to mount root fs on unknown-block(0,0) CPU: 7 PID: 1 Comm: swapper/O Not tainted 5.10.28-Unraid #1 Hardware name: Supermicro X8DTL/X8DTL, BIOS 2.1b 11/16/2012 Call Trace: dump_stack+0x6b/0x83 panic+Oxff/OxZa1 mount block root+0x2fd/0x30c ? rest init+Oxaf/Oxaf prepare_namespace+0x131/0x160 ? rest init+Oxaf/Oxaf kernel_init+0x5/Oxfa ret from fork+0x22/0x30 Kernel Offset: disabled .-[ end Kernel panic - not syncing: VTS: Unable to mount root fs on unknown-blo Ek(0,0) ]-- SOLUTION Downloaded a copy of the 6.9.2 files Manually copied over all the bz* files Also moved the "syslinux.cfg-" file back into the syslinux folder; for some reason it had moved out to the main directory Reboot Relish Now I just need to find a good way to automate backups of my flash drive Edited February 15, 2022 by IoTBoI bz* syntax Quote Link to comment
trurl Posted January 18, 2022 Share Posted January 18, 2022 I am guessing this is preventing you from even booting Unraid? You don't say. Do you have a flash backup? Quote Link to comment
itimpi Posted January 18, 2022 Share Posted January 18, 2022 The screenshot shows a failure reading off the flash drive. sometimes rewriting all the bz* type files for the release on the flash drive fixes this type of problem. Quote Link to comment
IoTBoI Posted January 18, 2022 Author Share Posted January 18, 2022 You are correct. Unraid will not boot into either the GUI or safemode GUI. Unfortunately, I have no backup. I had been only backing up my appdata. Quote Link to comment
IoTBoI Posted January 18, 2022 Author Share Posted January 18, 2022 46 minutes ago, itimpi said: The screenshot shows a failure reading off the flash drive. sometimes rewriting all the bz* type files for the release on the flash drive fixes this type of problem. Well this worked. I will edit my original post to mark as solved. Thanks!!! Quote Link to comment
trurl Posted January 18, 2022 Share Posted January 18, 2022 23 minutes ago, IoTBoI said: Unfortunately, I have no backup You must always have a current backup of flash. Main - Boot Device - Flash - Flash Backup Quote Link to comment
IoTBoI Posted January 18, 2022 Author Share Posted January 18, 2022 11 minutes ago, trurl said: You must always have a current backup of flash. Definitely a lesson learned. Any suggestions for backing up the flash? Quote Link to comment
JonathanM Posted January 18, 2022 Share Posted January 18, 2022 6 minutes ago, IoTBoI said: Any suggestions for backing up the flash? 18 minutes ago, trurl said: Main - Boot Device - Flash - Flash Backup Quote Link to comment
IoTBoI Posted January 19, 2022 Author Share Posted January 19, 2022 Nice. Thanks! Quote Link to comment
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