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I am trying to run Fedora 20 (Fedora-Live-Desktop-x86_64-20-1.iso) from an USB stick on my laptop. Unfortunately I keep running into these warnings:

Warning: dracut: Fatal: CD check failed!
Warning: dracut: Refusing to continue
Warning: /dev/mapper/live-rw does not exist

Then it enters some kind of emergency mode and allows me to use the dracut command line.

I have tried both UNetbootin and dd to create the bootable USB from my current Ubuntu 12.04.

sudo dd if=Fedora-Live-Desktop-x86_64-20-1.iso of=/dev/sdb bs=8M && sync

I used both 4M and 8M for the bs value. For 8M this results in:

10+1 records in
10+1 records out
87397591 bytes (87 MB) copied, 18.5976 s, 4.7 MB/s

Which seems far too low to me.

share|improve this question
Check if sha256sum Fedora-Live-Desktop-x86_64-20-1.iso produce this checksum: cc0333be93c7ff2fb3148cb29360d2453f78913cc8aa6c6289ae6823372a77d2 – Artur Szymczak Apr 29 '14 at 9:16
Something is indeed wrong because I have a different checksum: be6a95f4db77f52b45cb35686106876b16693b5638d59f172e4d75579b52f53a. But I got it from the fedoraproject.org site. Suggestions @ArturSzymczak ? – Oxidator Apr 29 '14 at 9:21
I have downloaded it again, this time the checksum checks out. I will try again. This time at least 999 MB are copied. – Oxidator Apr 29 '14 at 9:31
@ArturSzymczak that was the problem. Currently writing this from my Fedora Live :) – Oxidator Apr 29 '14 at 9:54

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