Boot Loader failed to install

[Messyhair42]

Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] 
md1 : active (auto-read-only) raid1 sde2[1]
      2926359132 blocks super 1.2 [2/1] [_U]
      
md0 : active (auto-read-only) raid1 sde1[1]
      3905214 blocks super 1.2 [2/1] [_U]
      
unused devices: <none>

after booting a degraded raid through my flash drive.

[darkod]

The previous mdstat showed the raid devices as sdc and sdd. This one shows sde with the other device removed.

Not only that it changes the devices raid members, it also seems to be dropping one of them.

Are your disks OK? Your system as a whole? You mentioned that BIOS failed to recognize one disk once. Or maybe more times?

[Messyhair42]

BIOS dropping a drive happens, but it's not a consistant error, so I dont know how to diagnose it. If it truly is a problem over the next few cycles I'll make that it's own issue. So my first act should be to verify a properly configured RAID, right? once that's complete I can tackle the bootloader issue.

[darkod]

Have you tried with another sata cable?
Connecting the disk that is being dropped to another sata port?

I would connect the disks planned for raid in the first two ports anyway, so they would be sda and sdb.

[Messyhair42]

I'm still here, after I got back from vacation I was too busy to do much of anything. I have swapped my cables around so the two raid drives are set as sda and sdb. however something still isn't right. gparted fails to recognize one of the 3TB drives, /dev/md1 as well as a 160GB drive

here is the output of

sudo fdisk -l

Disk /dev/sda: 3000.6 GB, 3000592982016 bytes
255 heads, 63 sectors/track, 364801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1      267350  2147483647+  ee  GPT
Partition 1 does not start on physical sector boundary.

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0008e958

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1      121601   976760001   83  Linux

Disk /dev/md0: 3998 MB, 3998939136 bytes
2 heads, 4 sectors/track, 976303 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Alignment offset: 3072 bytes
Disk identifier: 0x00000000

Disk /dev/md0 doesn't contain a valid partition table

Disk /dev/md1: 2996.6 GB, 2996591751168 bytes
2 heads, 4 sectors/track, 731589783 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Alignment offset: 512 bytes
Disk identifier: 0x00000000

Disk /dev/md1 doesn't contain a valid partition table

Disk /dev/sde: 4022 MB, 4022337024 bytes
228 heads, 59 sectors/track, 584 cylinders
Units = cylinders of 13452 * 512 = 6887424 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0003ef6e

   Device Boot      Start         End      Blocks   Id  System
/dev/sde1   *           1         584     3926016   83  Linux
Partition 1 has different physical/logical beginnings (non-Linux?):
     phys=(0, 32, 33) logical=(0, 34, 43)
Partition 1 has different physical/logical endings:
     phys=(488, 227, 59) logical=(583, 195, 59)

Disk /dev/sdf: 16.0 GB, 16008609792 bytes
255 heads, 63 sectors/track, 1946 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000845c1

   Device Boot      Start         End      Blocks   Id  System
/dev/sdf1   *           1        1216     9764864   83  Linux
/dev/sdf2            1217        1946     5863725    7  HPFS/NTFS

/sdb is my old backup drive. /sde and /sdf are my flash drives. I don't understand what it says about /dev/md1.

also here is the output of

cat /proc/mdstat

ersonalities : [linear] [multipath] [raid1] [raid0] [raid6] [raid5] [raid4] [raid10] 
md1 : active raid1 sdc2[0](F) sda2[1]
      2926359132 blocks super 1.2 [2/1] [_U]
      
md0 : active raid1 sdc1[0](F) sda1[1]
      3905214 blocks super 1.2 [2/1] [_U]