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...read-only. > >Depending on the kind of data you removed you could use 'testdisk' or >'photorec' to recover. Make sure to only use a copied image to test. Thanks for your advice. I will try the tools. I also found the article about how to create and mount image. https://midnightprogrammer.net/post/create-mount-and-unmount-img-files-in-ubuntu/ The article says, the image file created by dd should formated in ubuntu. For Centos, should I format the image file before mounting it as virtual read-only disk? Thanks! Regards andrew At 2020-09-16 21:32:49, "Simon Matter&qu...

Hi, Thanks for your reply. The file system type is xfs. And I found xfsdump/xfsrestore can undo the remove. I use dd to copy the partition as one image file. How do I mount the image as read-only device? Then I can try to recover the deleted files/directory anytime. Thanks! Regards Andrew At 2020-09-16 20:36:44, "Jonathan Billings" <billings at negate.org> wrote: