Panic crash 4 times now

[kagharaht]

I have no idea what this means. lol

panic(cpu 2 caller 0xffffff800b613767): "IOSCSIPeripheralDeviceType00::setPowerState(0xffffff802c58c4a0 : 0xffffff7f8b8f4234, 1 -> 4) timed out after 101025 ms"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-6153.141.66/iokit/Kernel/IOServicePM.cpp:5296
Backtrace (CPU 2), Frame : Return Address
0xffffff91ff91bb40 : 0xffffff800af1b54d
0xffffff91ff91bb90 : 0xffffff800b055d85
0xffffff91ff91bbd0 : 0xffffff800b04790e
0xffffff91ff91bc20 : 0xffffff800aec1a40
0xffffff91ff91bc40 : 0xffffff800af1ac17
0xffffff91ff91bd40 : 0xffffff800af1b007
0xffffff91ff91bd90 : 0xffffff800b6c03bc
0xffffff91ff91be00 : 0xffffff800b613767
0xffffff91ff91be50 : 0xffffff800b613049
0xffffff91ff91be60 : 0xffffff800b62a5de
0xffffff91ff91bea0 : 0xffffff800b611df8
0xffffff91ff91bec0 : 0xffffff800af5d525
0xffffff91ff91bf40 : 0xffffff800af5d051
0xffffff91ff91bfa0 : 0xffffff800aec113e

BSD process name corresponding to current thread: kernel_task

Mac OS version:
19H2026

 

[Fishrrman]

What do you have connected to the iMac?

 

[kagharaht]

What do you have connected to the iMac?

I have 1TB ssd as my boot drive where the OS is at. 3 external USB one of them is TM the other is just external drives for storage. 1 USB DVD/BR Player Burner, rarely used but still plugged in. Thats about it. Do you think its the 1TB SSD Drive used for my OS? Mac runs so much faster off that thing, but if its making it crash, I'll go back to the internal HD.

 

[Fishrrman]

Kernel panics are often "hardware-based".

I would disconnect EVERYTHING except the boot drive (for a period of experimentation).

Connect the tm drive and see if anything changes.

Then, try drives one-at-a-time.

Speaking only for myself, I only connect drives that NEED to be connected at a particular moment.
When I'm done with them, I eject them and physically disconnect them.
Works for me (for 35 years of Mac).

 

[kagharaht]

Kernel panics are often "hardware-based".

I would disconnect EVERYTHING except the boot drive (for a period of experimentation).

Connect the tm drive and see if anything changes.

Then, try drives one-at-a-time.

Speaking only for myself, I only connect drives that NEED to be connected at a particular moment.
When I'm done with them, I eject them and physically disconnect them.
Works for me (for 35 years of Mac).

I think its my old TM backup drive. After it crashed again, I rebooted and the TM drive would not mount. Took several reboots to make it show up. Maybe more times than usual because my external SSD Drive with Catalina never mounts right away after a shutdown. I get the folder blinking and I have to hard boot a few time to make it mount. I never could figure that one out. Anyway the TM Drive still wouldn't boot. So I removed it. Now I'll keep it running and see if it crashes on its own again. By the way, why does the external SSD never gets selected by the OS as a startup right away, after a restart or shutdown?

 

[Thessman]

Kernel panics are often "hardware-based".

I would disconnect EVERYTHING except the boot drive (for a period of experimentation).

Connect the tm drive and see if anything changes.

Then, try drives one-at-a-time.

Speaking only for myself, I only connect drives that NEED to be connected at a particular moment.
When I'm done with them, I eject them and physically disconnect them.
Works for me (for 35 years of Mac).

I've always had a bunch of drives, internal, external, you name it, and I only remove the problematic ones.
Works too for Mac for the last 37 years.

 

[kagharaht]

So I took out the SSD Boot Drive as it takes 10 or more reboots to try and get it to mount. I also remove the TM Drive that has been doing its thing for 10 years now. That was having trouble mounting. Finally got it to boot with the SSD , then got a new external HD and made a new TM backup. Wiped the entire internal HD and restore everything back from the new TM backup. Now lets see if this thing starts crashing again after removing the SSD and bad TM backup drive. Thing is slow again running the os with internal HD but I can live with it.

 

[picpicmac]

I'm using an old iMac with external SSDs attached, including one for the boot drive.

Every once in a while I get a hard crash. System won't reboot, so I have to power down, do a PROM reset when powering up, then booting from an old HD I have with Snow Leopard, disconnect the SSDs and the HD TM, reconnect, run Disk Util from Snow Leopard to repair each drive, which redoes the mount point, then finally set the boot drive to the external SSD.

Then I restart and behold, it works.

Happens every few months.

 

[kagharaht]

Yeah its getting flaky on the old iMac Late 2013 stuck with Catalina. I think its stable again and I can just wait it out till Apple decides to release an updated iMac M2 or M3 or whatever the decide to do. I just keep a bunch of apps open, hide them, and let it sleep and power nap to keep it updated and its maintenance jobs. Maybe do standard reboot once every week to flush the cache.

 

[picpicmac]

I can just wait it out till Apple decides to release an updated iMac M2 or M3 or whatever the decide to do

That's what I am doing.

 

[kagharaht]

Ok this is weird. I'm of course back to using the internal slow as molasses spinner drive for the OS. I then turned on Filevault. It took over 24 hors to finish. Now it literally takes 5-6 min to boot LOL. Opening up an app for the first time takes over 3 min to load. Mail took 8 min. Weird thing is when I do a full shut down, and turn it own, iMac won't recognize the BT keyboard and mouse that came with it. I even plugged in a USB apple keyboard and mouse it won't recognize that either. I did a shut down, NVRAM/PRAM, SMC Reset, Safe Boot and no go. I have to force shut down and boot again and then it recognized both wired and wireless keyboard and mouse. I'm going to turn off FileVault and see if the sluggishness improves. Also if the cold boot no longer ignores the BT KB and mouse. So weird.

 

[kagharaht]

Filevault enabled was doing that. With Filevault off, the iMac can be fully turned off and on and the BT KB and Mouse and even wired keyboard and mouse immediately works to log in. Boot speed is way faster and definitely read and write better. Poor little iMac...