topscoder

Situation Server ran for a long time without issues. Upgraded Unraid OS to 6.10.3. Rebooted but never came back online again. Booting the server gets stuck at Kernel Panic. /dev/root: Can't open blockdev VCS: Cannot open root device "(null)" or unknown-block(0,0): error -6 Please append a correct "root=" boot option; here are the available partitions: Kernel panic - not syncing VFS: Unable to mount root rs on unknown-block(0,0) CPU: 3 PID: 1 Comm: swapper/0 Not tainted 5.15.46-Unraid #1 Hardware name: Apple Inc. Macmini5,3/Mac-ZUYXYZDF8234, BIOS MM51.88Z.0080.B00.1804091930 04/09/2018 Call Trace: <TASK> dump_stack_lvl+0x46/0x5a panic+0xf6/0x2a1 mount_block_root+0x1de/0x1ed ? rest_init+0xbb/0xbb prepare_namespace+0x136/0x165 ? rest_init+0xbb/0xbb kernel_init+0x16/0x11 ret_from_fork+0x22/0x30 </TASK> Kernel Offset: disabled --[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) ]-- What I tried I tried several things to find a solution, but without success until now. What I've done so far: - I've created a new Unraid USB stick using a new USB stick. Same issue. - Created new Unraid USB stick using 6.10.2. Same issue. - Created new Unraid USB stick using 6.10.0. Same issue. - Created new Unraid USB stick using 6.9.2. Same issue. - Created new Unraid USB stick using 6.10.3 and copied /bz* files to the errornous USB stick. Same issue. - Added "root=" boot option in syslinux.cfg; -- root=/dev/sda -> Same issue. -- root=/dev/sda1 -> Same issue. -- Tried to add root= boot option at the end of the lines in syslinux.cfg and also at the beginning of the lines (according to syslinux docs). Still same issue. -- Tried another USB port. Same issue. So: - USB Stick died? Guess not. New USB stick also won't boot. - Server hardware/software died? Nothing updated or upgraded. Only Unraid OS on USB. Server runs. It's Unraid that won't boot. - Wrong Unraid OS version? I've tried to downgrade to 6.9.2 without success. Also 6.10.0-6.20.3 without success. - Current kernel can't deal with USB stick (location?). I tried adding root= boot options without success. Well, I guess it's the kernel (config) what bugs here, but I don't know how I'm able to - at least - get my server up and running again. Someone who can help (with ideas)?