Hi All, I had a perfectly working SS20 with HyperSparc modules running 9.0 Bite the bullet.... let's upgrade! First I test the kernel (but not-MP) and it did boot! Thus I dumped miniroot on swap.. and proceed to upgrade! All went fine. On reboot... after a while I see on serial console repeated errors. I was able to grab a part below and paste it. Anybody else has issues? I cannot have a full dmesg rigth now and I don't know if Ic an boot a 9.0 series kernel. I suppose, given the previous "tests" about kernel, I fear the issue is about SMP! Ideas, what about you? Riccardo [ 301.8077970] address: 0x0abb3d40 [ 301.8077970] module location: J0202 [ 301.8536050] Async registers (mid 8): afsr=0x0<AFA=0x0>; afva=0x00 [ 301.8536050] cpu0: NMI: system interrupts: 0x10080000<VME=0x0,SBUS=0x0,T,M> [ 301.8536050] SX STATUS: 00005400 [ 301.8536050] SX ERROR : 00000000 [ 301.8536050] SX DIAG : 00000000 [ 301.8536050] memory error: [ 301.8536050] EFSR: 0x12611<CE,DW=0x1,SYNDROME=0x26,ME> [ 301.8536050] MBus transaction: 0x8ffd4d50<VAH=0x0,TYPE=0x5,SIZE=0x5,C,VA=0xf5,S,MID=0x8> [ 301.8536050] address: 0x0ab93d40 [ 301.8536050] module location: J0202 [ 301.8836230] Async registers (mid 8): afsr=0x0<AFA=0x0>; afva=0x00 [ 301.8836230] cpu0: NMI: system interrupts: 0x10080000<VME=0x0,SBUS=0x0,T,M> [ 301.8836230] SX STATUS: 00005400 [ 301.8836230] SX ERROR : 00000000 [ 301.8836230] SX DIAG : 00000000 [ 301.8836230] memory error: [ 301.8836230] EFSR: 0x12611<CE,DW=0x1,SYNDROME=0x26,ME> [ 301.8836230] MBus transaction: 0x8ff74d30<VAH=0x0,TYPE=0x3,SIZE=0x5,C,VA=0xdd,S,MID=0x8> [ 301.8836230] address: 0x0abb3d41 [ 301.8836230] module location: J0202 [ 301.9536150] Async registers (mid 8): afsr=0x0<AFA=0x0>; afva=0x00 [ 301.9536150] cpu0: NMI: system interrupts: 0x10080000<VME=0x0,SBUS=0x0,T