Help boot with Zuluscsi Pico Slim on my Mac Plus

[Whateverr]

Hello,
New to the vintage Mac world, but I have a Mac Plus I wanna get going with the Pico Slim, tried several .img files, off Mac Repos, Internet Archive, and Mac Garden. I can't get it to work. The Pico is working, the Mac always gets to the question mark floppy screen, but every img file I use doesn't work. I've renamed them, HDx.img, I've left them as they are when I download. Nothing happens.

Here's the most recent zululog.
[12ms] Platform: ZuluSCSI Pico DaynaPORT
[12ms] FW Version: 25.04.25-release Apr 25 2025 14:58:12
[12ms] DIP switch settings: debug log 0, termination 1
[12ms] SCSI termination is enabled
[12ms] Flash chip size: 2048 kB
[12ms] SCSI target/disk mode selected by DIP switch, acting as a SCSI disk
[685ms] SD card detected, FAT32 volume size: 29808 MB
[685ms] SD MID: 0x27, OID: 0x50 0x48
[685ms] SD Name: SD32G
[685ms] SD Date: 2/2025
[685ms] SD Serial: 0x66986819
[686ms] Speed grade set to Default, skipping reclocking
[687ms] Reading configuration from zuluscsi.ini
[688ms] Active configuration:
[688ms] -- SelectionDelay = 255
[688ms] -- EnableUnitAttention = No
[688ms] -- EnableSCSI2 = Yes
[688ms] -- EnableSelLatch = No
[688ms] -- MapLunsToIDs = No
[688ms] -- EnableParity = Yes
[752ms] Finding images in directory /:
[753ms] -- Opening /HD3.img for id:3 lun:0
[754ms] ---- Configuring as disk drive drive
[754ms] ---- Drive geometry from image size: SectorsPerTrack=50 HeadsPerCylinder=16 total sectors 1600 (divisible)
[754ms] ---- Read prefetch enabled: 4608 bytes
[755ms] -- Opening /HD4.img for id:4 lun:0
[755ms] ---- Configuring as disk drive drive
[755ms] ---- Drive geometry from image size: SectorsPerTrack=50 HeadsPerCylinder=16 total sectors 1600 (divisible)
[755ms] ---- Read prefetch enabled: 4608 bytes
[755ms] -- Opening /HD2.img for id:2 lun:0
[756ms] ---- Configuring as disk drive drive
[756ms] ---- Drive geometry from image size: SectorsPerTrack=50 HeadsPerCylinder=16 total sectors 1600 (divisible)
[756ms] ---- Read prefetch enabled: 4608 bytes
[757ms] -- Opening /HD1.img for id:1 lun:0
[758ms] ---- Configuring as disk drive drive
[758ms] ---- Drive geometry from image size: SectorsPerTrack=50 HeadsPerCylinder=16 total sectors 1600 (divisible)
[758ms] ---- Read prefetch enabled: 4608 bytes
[760ms] -- Opening /HD6.img for id:6 lun:0
[808ms] ---- Configuring as disk drive drive
[808ms] ---- Drive geometry from image size: SectorsPerTrack=32 HeadsPerCylinder=16 total sectors 1048576 (divisible)
[808ms] ---- Read prefetch enabled: 4608 bytes
[809ms] -- Opening /HD0.img for id:0 lun:0
[811ms] ---- Configuring as disk drive drive
[811ms] ---- Drive geometry from image size: SectorsPerTrack=60 HeadsPerCylinder=16 total sectors 2880 (divisible)
[811ms] ---- Read prefetch enabled: 4608 bytes
[812ms] -- Platform supports ROM drive up to 1468 kB
[812ms] ---- ROM drive image not detected
[812ms] SCSI ID: 0, BlockSize: 512, Type: 0, Quirks: 0, Size: 1440kB
[812ms] SCSI ID: 1, BlockSize: 512, Type: 0, Quirks: 0, Size: 800kB
[812ms] SCSI ID: 2, BlockSize: 512, Type: 0, Quirks: 0, Size: 800kB
[812ms] SCSI ID: 3, BlockSize: 512, Type: 0, Quirks: 0, Size: 800kB
[812ms] SCSI ID: 4, BlockSize: 512, Type: 0, Quirks: 0, Size: 800kB
[812ms] SCSI ID: 6, BlockSize: 512, Type: 0, Quirks: 0, Size: 524288kB
[940ms] Clock set to: 133000000Hz
[940ms] Initialization complete!
[22609ms] Toolbox enabled = 0


Any help is appreciated

 

[Frobozz]

I don't have pico, but some BlueSCSI things are probably in common:
- did you include the MacPlus thingie in ini file?:
[SCSI]
System=MacPlus

- I had bad luck with getting anything to boot until I formatted drives on the Mac plus with the modified apple SC 753 setup. It's on the bootstrap .hda image if you can get that on your pico. All the images I downloaded and used DiskJockey on, and copied files from Basilisk II, etc., were never readable. Had to reformat them all with the Apple SC thing (the modified one). I got errors when I did LIDO on them, which I didn't expect as I've used that with other SD SCSI solutions in the past with good results.

 

[Realitystorm]

Many of the images you find online are images of a single drive volume and were created for emulators. For an actual Macintosh computer you need an image that also contains the boot driver. I have a guide on my site and image files that may help https://www.savagetaylor.com/downloads/downloads-macintosh/#21_what_is_a_drive_image