Spinning hard disk is pretty unimpressed by anything PSU I guess

.
I can use either, SCSI HDD or Zulu for booting with other accelerators (e.g. CyberStorm MK2 040/40MHz) or with onboard 030/882,
so I guess the suppy voltage message is kind of a smoke grenade just distracting from something else.
Also: if Zulu would be in trouble or crashing, how did it write the message to SD Card?
This is now from a pretty successful boot with the CS MK2 mentioned above:
Code: Select all
[10ms] Platform: ZuluSCSI RP2040
[10ms] FW Version: 23.05.25-release May 25 2023 19:01:02
[11ms] DIP switch settings: debug log 0, termination 1
[11ms] SCSI termination is enabled
[12ms] Flash chip size: 4096 kB
[14ms] SCSI target/disk mode selected by DIP switch, acting as a SCSI disk
[97ms] SD card detected, FAT64 volume size: 121910 MB
[98ms] SD MID: 0x03, OID: 0x53 0x44
[98ms] SD Name: SN128
[99ms] SD Date: 2/2023
[99ms] SD Serial: 0x5AB38CCE
[100ms] Reading configuration from zuluscsi.ini
[101ms] Active configuration:
[101ms] -- SelectionDelay = 255
[102ms] -- EnableUnitAttention = No
[102ms] -- EnableSCSI2 = Yes
[103ms] -- EnableSelLatch = No
[103ms] -- MapLunsToIDs = No
[104ms] -- EnableParity = Yes
[113ms] -- Opening A3000T-32GB.img for id:0, specified in zuluscsi.ini
[114ms] ---- Read prefetch enabled: 4096 bytes
[188ms] Finding HDD images in directory /:
[193ms] -- Platform supports ROM drive up to 3740 kB
[193ms] ---- ROM drive image not detected
[194ms] SCSI ID:0 BlockSize:512 Type:0 Quirks:0 ImageSize:33800760kB
[294ms] Initialization complete!
[304ms] WARNING: Detected supply voltage drop to 2569mV. Verify power supply is adequate.
[4490ms] WARNING: Detected supply voltage drop to 2517mV. Verify power supply is adequate.
[9605ms] SCSI ID 0 negotiated synchronous mode 5 MB/s (period 4x53 ns, offset 12 bytes)
[18785ms] SCSI ID 0 negotiated synchronous mode 5 MB/s (period 4x53 ns, offset 12 bytes)
The box also works with both, Zulu + HDD together on CS MK2 + onboard 030/882, so - what should I say?
Next best thing I could do is write an oscilloscope printout of the voltages and search for drops, multimeter says 5.05 on mainboard connector.