https://bugzilla.redhat.com/show_bug.cgi?id=1878970 After updating my Fedora kernel package this morning, my IMSM RAID is no longer recognized: [pilcher@ian system]$ sudo mdadm --examine --verbose /dev/sdc /dev/sdc: MBR Magic : aa55 Partition[0] : 204800 sectors at 2048 (type 07) Partition[1] : 2048000 sectors at 206848 (type 83) Partition[2] : 61440000 sectors at 2254848 (type 07) Partition[3] : 1889824768 sectors at 63694848 (type 05) If I boot the older kernel, it says: [pilcher@ian ~]$ sudo mdadm --examine --verbose /dev/sdc /dev/sdc: Magic : Intel Raid ISM Cfg Sig. ⋮ Any tips on what might cause this or how to debug further would be appreciated. Thanks! -- ======================================================================== In Soviet Russia, Google searches you! ========================================================================