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Help! My system crashed.

My system (PC with Red Hat 8) crashed in the middle of the day. Several filesystems refuse to mount with fsck and...

I have no backups to these systems.

Do you have any idea what I can do or where to start?

Moving forward, can you please tell me how I can mirror disks at the OS level with Linux.
Cardinal rule: back up using a planned back-up strategy or use disk mirroring for disaster recovery.

Editor's note: Here are two tips on mirroring strategies you may find helpful:

This was last published in September 2003

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