Recovering a failed GPT disk: Difference between revisions
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Created page with "* before hot replacing a disk, say <code>ada5</code>, run :<code># zpool offline zroot ada5</code> :and check :<code># zpool status</code> * Insert a new physical disk * Copy the partition table to the new disk from a healthy one * Label all partitions with the commands: :<code># gpart modify -l LABEL -i1 ada5</code> Category: FreeBSD Category: Hardware" |
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* Label all partitions with the commands: | * Label all partitions with the commands: | ||
:<code># gpart modify -l LABEL -i1 ada5</code> | :<code># gpart modify -l LABEL -i1 ada5</code> | ||
* Fill the EFI partition: | |||
:<code>#newfs_msdos -F 32 -c 1 /dev/ada5p1</code> | |||
:<code># mount -t msdosfs /dev/ada5p1 /mnt</code> | |||
:<code># mkdir -p /mnt/EFI/BOOT /mnt/EFI/FREEBSD</code> | |||
:<code># cp /boot/loader.efi /mnt/EFI/BOOT/BOOTX64.efi</code> | |||
:<code># cp /boot/loader.efi /mnt/EFI/FREEBSD/</code> | |||
:<code># umount /mnt</code> | |||
* Fill the freebsd-boot partition: | |||
:<code>#gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 ada5</code> | |||
* Check: | |||
:<code>#loaders-update show-me</code> | |||
:<code>#zpool replace zroot ada5p3</code> | |||
[[Category: FreeBSD]] | [[Category: FreeBSD]] | ||
[[Category: Hardware]] | [[Category: Hardware]] | ||
Revision as of 22:10, 13 December 2025
- before hot replacing a disk, say
ada5, run
# zpool offline zroot ada5- and check
# zpool status
- Insert a new physical disk
- Copy the partition table to the new disk from a healthy one
- Label all partitions with the commands:
# gpart modify -l LABEL -i1 ada5
- Fill the EFI partition:
#newfs_msdos -F 32 -c 1 /dev/ada5p1# mount -t msdosfs /dev/ada5p1 /mnt# mkdir -p /mnt/EFI/BOOT /mnt/EFI/FREEBSD# cp /boot/loader.efi /mnt/EFI/BOOT/BOOTX64.efi# cp /boot/loader.efi /mnt/EFI/FREEBSD/# umount /mnt
- Fill the freebsd-boot partition:
#gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 ada5
- Check:
#loaders-update show-me#zpool replace zroot ada5p3