Installation guide for Core - invalid command for Mac OS

Bug #1673422 reported by Matei Radu on 2017-03-16
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Ubuntu Developer Portal
David Callé

Bug Description

Step 8 for Mac OS of the guide "Create installation medias for Ubuntu Core" (link: says to use dd to write the image with the following command:

sudo dd if=~/Downloads/<image file> of=<drive address> bs=32MB

While I do provide a valid paths to both image and drive, dd reports the following and does not proceed with the writing:

dd: bs: illegal numeric value

Solution: on macOS, uppercase letters to specify byte size are invalid and so I used 'm' instead of 'MB'. The guide should be updated to reflect this particularity of dd on macOS.

David Callé (davidc3) wrote :

Thanks for the report!

Changed in developer-ubuntu-com:
status: New → Confirmed
importance: Undecided → Medium
assignee: nobody → David Callé (davidc3)
Matei Radu (mateiradu) on 2017-03-16
description: updated
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