From here:
# lofiadm -a /path/to/cd.iso
returns (for first image): /dev/lofi/1
mount -o ro -F hsfs /dev/lofi/1 /mnt/iso1
To unmount:
# umount /mnt/iso1
# lofiadm -d /dev/lofi/1
Enabling ssh, sftp and ftp servers on MacOS
From here, you can enable ssh and sftp servers on MacOS from System Preferences/Sharing, and enabling the ‘Remote Login’ option.
To enable an ftpd server, run:
sudo -s launchctl load -w /System/Library/LaunchDaemons/ftp.plist
MacOS 10.15 Catalina fails to burn bootable cdroms from ISOs
Not likely to impact most people, but occasionally I use an external USB dvd burner to make bootable disks for installing various OSes on older computers.
Previously before Catalina I would right click an ISO and select “Burn Image to…’ and this would work as it has for the past several MacOS releases. Now though when I click this option the menu disappears and nothing happens. A tip here suggested to double click this iso to mount it, and then right click the mounted disk and select “Burn Image’. While this does work to burn to a blank cdrom, the disk is not bootable, it appears to only copy the files to the cdrom and not burn it as a bootable disk, even if the iso is from a bootable disk.
Reading through the above post on the Apple site, this sounds like a bug in Catalina and has been logged.
Useful Sun OpenBoot Prom (OBP) commands
At power on: (useful reference)
Stop-A : stop the boot process, takes you to OBP ok prompt
Stop-N : reset to default NVRAM values
From go prompt (from article here):
- to enable POST diags, not sent to monitor but sent via serial connection to a terminal or terminal emulator
setenv diag-switch? true
Turn off again with false
- Turn off configured boot drive:
setenv auto-boot? false
true to enable again
- Manually boot from given device:
boot disk
boot cdrom
where disk and cdrom are device aliases that you can view with
devalias