Recovering a failed GPT disk: Difference between revisions
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m Verbovet moved page Recovering a failed GPT drive to Recovering a failed GPT disk without leaving a redirect |
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* before hot replacing a disk | * before hot replacing a disk (say <code>ada5</code>) run | ||
:<code># zpool offline zroot ada5</code> | :<code># zpool offline zroot ada5</code> | ||
:and check | :and check | ||
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* Insert a new physical disk | * Insert a new physical disk | ||
* Copy the partition table to the new disk from a healthy one | * Copy the partition table to the new disk from a healthy one | ||
:<code># gpart backup ada0 | gpart restore -F ada5</code> | |||
* 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: | * Fill the EFI partition: | ||
:<code>#newfs_msdos -F 32 -c 1 /dev/ada5p1</code> | :<code># newfs_msdos -F 32 -c 1 /dev/ada5p1</code> | ||
:<code># mount -t msdosfs /dev/ada5p1 /mnt</code> | :<code># mount -t msdosfs /dev/ada5p1 /mnt</code> | ||
:<code># mkdir -p /mnt/EFI/BOOT /mnt/EFI/FREEBSD</code> | :<code># mkdir -p /mnt/EFI/BOOT /mnt/EFI/FREEBSD</code> | ||
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:<code># umount /mnt</code> | :<code># umount /mnt</code> | ||
* Fill the freebsd-boot partition: | * Fill the freebsd-boot partition: | ||
:<code>#gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 ada5</code> | :<code># gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 ada5</code> | ||
* Check: | * Check: | ||
:<code>#loaders-update show-me</code> | :<code># loaders-update show-me</code> | ||
* Return ada5p3 to the ZFS pool: | * Return ada5p3 to the ZFS pool: | ||
:<code>#zpool replace zroot ada5p3</code> | :<code># zpool replace zroot ada5p3</code> | ||
[[Category: FreeBSD]] | [[Category: FreeBSD]] | ||
[[Category: Hardware]] | [[Category: Hardware]] | ||
Latest revision as of 22:17, 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
# gpart backup ada0 | gpart restore -F ada5
- 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
- Return ada5p3 to the ZFS pool:
# zpool replace zroot ada5p3