Bernd,
That's odd, mount normally guesses the correct filesystem type. But in any case that's great news. I'm glad I could help you recover your data.
And yes I perform remote data recovery for clients world wide and work on a lot of failed RAID/NAS systems.
Stephen
QNAP TS-439 Pro II lost RAID-5-configuration / Filesystem
Forum rules
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When asking for technical support:
- Search for posts on the same topic before posting a new question.
- Give clear, specific information in the title of your post.
- Include as many details as you can, MOST POSTS WILL GET ONLY ONE OR TWO ANSWERS.
- Post a follow up with a "Thank you" or "This worked!"
- When you learn something, use that knowledge to HELP ANOTHER USER LATER.
Before posting, please read https://www.cgsecurity.org/testdisk.pdf