boot -fl 0,1 SYSBOOT>set alloclass=<non-zero-value> SYSBOOT>continue From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Sampsa Laine Sent: Monday, September 19, 2011 21:16 To: hecnet at Update.UU.SE Subject: Re: [HECnet] I broke CHIMPY, again... How do I get the system to boot again, easiest way? Sampsa On 20 Sep 2011, at 02:07, Steve Davidson wrote: You will need to set ALLOCLASS (in MODPARAMS.DAT) to non-zero, autogen, and reboot. Do not use feedback unless the system had been up for at least 24 hours. -Steve From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Sampsa Laine Sent: Monday, September 19, 2011 18:05 To: hecnet at Update.UU.SE Subject: [HECnet] I broke CHIMPY, again... This time by adding volume shadowing: I added the following to MODPARAMS.DAT: ! Volume Shadowing Parameters: SHADOWING=2 ! Enables phase II shadowing SHADOW_SYS_DISK=1 ! Enables system disk shadowing SHADOW_SYS_UNIT=7 ! Specifies 7 as the virtual unit number of the system disk SHADOW_MAX_COPY=3 ! Specifies that 3 parallel copies can occur at one time SHADOW_MBR_TMO=10 ! Allows 10 seconds for physical members to fail over ! before removal from the shadow set Then ran: @SYS$UPDATE:AUTOGEN SAVPARAMS SETPARAMS FEEDBACK Rebooted with save feedback, when it comes up, it fails: **** OpenVMS Alpha Operating System V8.3 - BUGCHECK **** ** Bugcheck code = 00000B14: SHDWREQALLOC, Allocation class is required for shadow set members ** Crash CPU: 00000000 Primary CPU: 00000000 Node Name: CHIMPY ** Supported CPU count: 00000001 ** Active CPUs: 00000000.00000001 ** Current Process: SYSINIT ** Current PSB ID: 00000001 ** Image Name: SYSINIT.EXE Easiest way to fix?