Matt,

I think there has been a miscommunication.

fdisk shows /dev/sdb1 as type Linux (0x83) - the Disklabel type is dos. (my error to say it was formatted as dos). This drive is causing the issues with booting. df shows it is ext4.

root@orca:/home/mark# fdisk -l /dev/sdb
Disk /dev/sdb: 2.7 TiB, 3000558944256 bytes, 732558336 sectors
Units: sectors of 1 * 4096 = 4096 bytes
Sector size (logical/physical): 4096 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x00028375

Device Boot Start End Sectors Size Id Type
/dev/sdb1 256 732558335 732558080 2.7T 83 Linux

The other USB drive, /dev/sdc1 is formatted as NTFS and I use fuse to access it. This drive is not causing the issues. I want that drive to be Windows compatible as I mentioned before.

root@orca:/home/mark# fdisk -l /dev/sdc
Disk /dev/sdc: 1.8 TiB, 2000365289472 bytes, 3906963456 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x48f9a2e9

Device Boot Start End Sectors Size Id Type
/dev/sdc1 2048 3906963455 3906961408 1.8T 7 HPFS/NTFS/exFAT

I don't think I have to change anything in the partition table for /dev/sdb1. Or, am I missing something?

Mark

On Sat, Dec 10, 2016 at 11:41 AM, Matt Graham <mhgraham@crow202.org> wrote:

On 2016-12-10 11:18, Mark Phillips wrote:

On Sat, Dec 10, 2016 at 9:27 AM, Anon Anon <lokotejones@gmail.com> wrote:

Disk label type DoS and NTFS? I bet if you could reformat those

sdb is formatted as ext4. Not sure why fdisk shows [NTFS].
/dev/sdb1 ext4 2884121824 1265247048 1472346776 47% /media/backup

Also, the NTFS drive is not causing the issue. It is the ext4 drive.

The partition table has a "partition type" byte in it, and the partition table on sdb has sdb1 as 0x07 (NTFS). The filesystem on sdb1 is ext4. Most Linux utilities don't pay any attention to the "partition type" byte. Your machine's BIOS, however, might. BIOSes have very small brains, and "partition type NTFS but the filesystem isn't NTFS" may be confusing it. If I were you, I'd use fdisk to change sdb1 to type 0x83 (Linux) and see if that helps.

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