I’m back home!

After three years, 45 countries and more than 125’000km on the motorcycle I am finally back home in Switzerland!
More numbers and statistics of my trip are on my ATW blog imoff.to

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create floppy disk images on MacOS

I want to archive old floppy disks for archive.org. the easiest way is to create a floppy image, which also includes the boot records on bootable floppies.
the image then can be opened in DOS box or on MacOS (just rename to .dmg an open in Finder).

diskutil list
(find device of the floppy, ie /dev/disk2)
diskutil unmountDisk /dev/disk2
sudo dd if=/dev/disk2 bs=512 conv=noerror,sync of=myfloppy.img

and for CDs / DVDs

diskutil unmountDisk /dev/disk2
sudo dd if=/dev/disk2 bs=2048 conv=sync,notrunc of=myISO.iso
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iCloud Calendar on MacOS not responding

I just had an issue with the calendar on MacOS (Mojave) not responding right after opening the window. The calendars are synced over iCloud to an iPhone and an iPad. I had no issues on the iPad, the iPhone however would freeze occasionally while adding new events in the calendar.

I saw other symptons on MacOS in the activity monitor: the processes CalNCService, suggestd, AppleSpell and CalendarAgent were at 100% CPU (on a core each).

I deleted the cache files, calendar plists, etc and nothing helped.
When I disabled the iCloud calendar sync, the issue stopped and the calendar app worked!
So the issue was clearly related to some data in the iCloud calendar.

I installed Mozilla Thunderbird with the Lightning Calendar Add-on and connected it with iCal/ICS to iCloud to see what’s going on.
To get access to an iCloud calendar with iCal/ICS it has to be enabled on the specific calendar. The easiest way to do this is on icloud.com: click the sharing icon on the calendar, select ‘public calendar’ and copy the displayed URL.

Open the calendar in Thunderbird and add a new one, select ‘network’, then iCalendar (ICS) and paste the iCloud URL.
Now you can search for corrupted event entries and delete them.
In my case I had an event with a corrupted date, so it displayed it from 1974 to 2050!
But I couldn’t delete it, as iCloud had an issue with that entry, too.

The solution was to export the whole calendar to an ICS file in Thunderbird (make sure you export to an ICS file and not a html), then import it again into a local calendar (still in Thunderbird). Locally I was able to delete the event. I then re-exported it again to have a good version of the calendar.

Now I deleted the calendar on icloud.com and waited until it was gone on all my devices (about 10 minutes).
As the last step I imported the cleaned ICS file into the MacOS calendar and let it sync with iCloud and all devices.

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Still on the road!

Yes, I’m still on the road after two years!

I made it on my motorcycle down to Australia! And then from Chile in South America up to Panama!

Follow my journey on imoff.to, Instagram or Youtube!

San Blas Islands, Panama
Salar de Uyuni, Bolivien
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I’m off!

this site won’t be updated anytime soon!

head over to https://imoff.to to follow me on my big journey around the world!


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