On 10.06.2021 22:43, Alan Altmark wrote: > A colleague is installing RHEL 8.4 in an LPAR via ftp server. The system > loads, but early in the installer boot process there's a network error > that he can't scroll back to look at because the Operating System Messages > console "rolls off" after about 475-500 messages. > > Can he update the generic.prm file to reference the integrated ASCII > console instead?
Add console=ttyS1 to have Linux use the integrated ASCII console as main console (input and output), or console=ttyS1 console=ttyS0 to copy console messages to the ASCII console while keeping the OS-Message console as main console. > And will that give him better console management to let > him see early boot errors? No. The Integrated ASCII console HMC task does not provide a scroll-back function. Some additional ideas: 1. Add rd.break=cmdline to the parmfile to get a controlled stop early in the boot process (hopefully before the relevant data is scrolled away) Enter CTRL-D (enter ^d on the OS message input line) to continue 2. Stream console messages to a local terminal using SNIPL (SLES only) https://www.ibm.com/docs/pl/linux-on-systems?topic=shutdown-snipl-control-virtual-hardware or zhmcclient https://github.com/zhmcclient/zhmccli Regards, Peter Oberparleiter -- Peter Oberparleiter Linux on Z Development - IBM Germany ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
