EXT4-fs (sda1): mounted filesystem with ordered data mode. blk_update_request: critical target error, dev sda, sector 0 Sometimes after it is mounting it is "rw" but only for a short period of time, like a minute. I can cd to this drive and try to write to it, but it gives an error that it is read-only. dev/sda1 /mnt ext4 **ro**,relatime,data=ordered 0 0 mount -t ext4 /dev/sda1 df -hįilesystem Size Used Avail Use% Mounted on Let's mount it, see what the deal is now. I guess that looks OK, I don't know if the number of Superblock backups matters or not? Writing superblocks and filesystem accounting information: done So I will proceed with doing a mkfs, maybe that will fix it? Just wishing thinking. I don't know what else to do at this point. When I connect the drive to a Dell server/CentOS and do this, I don't get errors about closing the file. If I do the above to a USB thumb drive, I don't get any of the bolded errors above. Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite) **Disk /dev/sda doesn't contain a valid partition fdisk /dev/sdaĭevice contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabelīuilding a new DOS disklabel with disk identifier 0x8b811c4f.Ĭhanges will remain in memory only, until you decide to write them.Īfter that, of course, the previous content won't be recoverable. I/O size (minimum/optimal): 512 bytes / 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes Now let's see what fdisk has to say about the drive: fdisk -lĭisk /dev/mmcblk0: 7948 MB, 7948206080 bytesĤ heads, 16 sectors/track, 242560 cylinders, total 15523840 sectors sd 1:0:0:0: Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 1:0:0:0: Attached scsi generic sg0 type 0 scsi 1:0:0:0: Direct-Access Maxtor OneTouch 0200 PQ: 0 ANSI: 0 CCS input: Maxtor OneTouch as /devices/platform/soc/b/usb1/1-1/1-1.2/input/input1 ums-onetouch 1-1.2:1.0: USB Mass Storage device detected usb 1-1.2: New USB device strings: Mfr=1, Product=3, SerialNumber=2 usb 1-1.2: New USB device found, idVendor=0d49, idProduct=7000 I powered it up and so far the dmesg output looks good: usb 1-1.2: new high-speed USB device number 5 using dwc_otg I have connected the drive to Dell server running CentOS 6 and don't have any problem with it there, but I do on the Raspberry Pi 2. My goal is to format the drive to use it as ext4, but I'm having troubles along the way with error messages. Linux raspberrypi 4.0.6-v7+ #799 SMP PREEMPT Fri Jun 26 15:50: armv7l GNU/Linux It has the latest updates, upgrades and firmware. I have an old Maxtor USB 250GB external drive I'm trying to use on the Raspberry Pi 2 running Raspbian.
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