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Troubleshooting • Pi5 RPiOS Bookworm GPT PMBR size mismatch

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Hi,

Running lastest Raspberry Pi OS 64bit Lite on a Raspberry Pi 5, I noticed this error message:
GPT PMBR size mismatch (4294967294 != 9767541166) will be corrected by write.
after running
sudo fdisk -l

Code:

Disk /dev/nvme0n1: 1.86 TiB, 2048408248320 bytes, 4000797360 sectorsDisk model: NVME 2TBUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisklabel type: dosDisk identifier: 0xc27f13bbDevice         Boot   Start        End    Sectors  Size Id Type/dev/nvme0n1p1         8192    1056767    1048576  512M  c W95 FAT32 (LBA)/dev/nvme0n1p2      1056768 4000797359 3999740592  1.9T 83 LinuxGPT PMBR size mismatch (4294967294 != 9767541166) will be corrected by write.
The only steps have been running Raspberry Pi Imager and burning the img to the NVME drive and booting from it. Raspberry Pi OS runs smoothly. Still, I can't understand why it shows or how to fix it without causing any damage to existing data. I've searched this forum but couldn't find a similar approach to this specific issue.

dmesg does not seem to show errors:

Code:

[    2.032015] nvme nvme0: pci function 0000:01:00.0[    2.036739] nvme 0000:01:00.0: enabling device (0000 -> 0002)...[    2.066026] nvme nvme0: failed to allocate host memory buffer.[    2.073099] nvme nvme0: 4/0/0 default/read/poll queues[    2.079553] nvme nvme0: Ignoring bogus Namespace Identifiers[    2.085723]  nvme0n1: p1 p2...[    4.530457] EXT4-fs (nvme0n1p2): mounted filesystem cek3g6m3-4k88-424a-8h72-cu46f3s6hy80 ro with ordered data mode. Quota mode: none....[    5.464992] EXT4-fs (nvme0n1p2): re-mounted ce208fd3-38a8-424a-87a2-cd44114eb820 r/w. Quota mode: none.
I tried gdisk but quitted not wanting to erase data:

Code:

sudo gdisk /dev/nvme0n1GPT fdisk (gdisk) version 1.0.9Partition table scan:  MBR: MBR only  BSD: not present  APM: not present  GPT: not present***************************************************************Found invalid GPT and valid MBR; converting MBR to GPT formatin memory. THIS OPERATION IS POTENTIALLY DESTRUCTIVE! Exit bytyping 'q' if you don't want to convert your MBR partitionsto GPT format!***************************************************************Warning! Secondary partition table overlaps the last partition by33 blocks!You will need to delete this partition or resize it in another utility.

Any feedback is much appreciated.

Statistics: Posted by mixpc — Mon Mar 17, 2025 2:29 pm



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