After a fresh install and reboot, or after a kernel update, the system fails to boot with the following message:
VFS: Cannot open root device XXX or unknown-block(0,0) Please append a correct "root=" boot option; here are the available partitions: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) ... Call Trace: [<ffffffff81527213>] ? panic+0xa7/0x16f [<ffffffff81c27432>] ? mount_block_root+0x216/0x2cb [<ffffffff81002930>] ? bstat+0x2b0/0x980 [<ffffffff81c2753d>] ? mount_root0x56/0x5a
OS unable to boot after kernel upgrade on RHEL 7
When upgrading the system (and the kernel in the process), the server doesn't reboot anymore.
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
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