caillou Posted January 14, 2019 Share Posted January 14, 2019 Given the following situation, due to user error: * A single data disk of an array has survived. The others have been formated. * The unRAID USB disk has been formated. I would like to mount the remaining disk and save the data. Here is what I have tried from the Terminal in Linux: $ sudo mount -t xfs /dev/sdb /mnt/unraid-disk mount: /mnt/unraid-disk: wrong fs type, bad option, bad superblock on /dev/sdb, missing codepage or hepler program, or other error. I am pretty sure I did not format or write to this disk in any way. How can I mont this disk in Linux? Is this even possible? And if not, is there a procedure to save the data on that disk? Quote Link to comment
trurl Posted January 14, 2019 Share Posted January 14, 2019 You need to specify the partition /dev/sdb1 Do you not intend to have an Unraid system? If you do, then you can work with it in Unraid just as well as you can in another linux. Quote Link to comment
caillou Posted January 14, 2019 Author Share Posted January 14, 2019 (edited) @trurl Thanks for your quick response. If I specify the partition, I get the following error: $ sudo mount -t xfs /dev/sdb1 /mnt/unraid-disk mount: /mnt/unraid-disk: special device /dev/sdb1 does not exist. `fdisk` returns the following information: $ sudo fdisk -l Disk /dev/sdb: 746,5 GiB, 801569726464 bytes, 1565565872 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: 0x00000000 Device Boot Start End Sectors Size Id Type /dev/sdb1 1 4294967295 4294967295 2T ee GPT Interestingly this is a 3TB disk. So you have a suggestion as to what I could try next? Edited January 14, 2019 by caillou fixed typo Quote Link to comment
caillou Posted January 14, 2019 Author Share Posted January 14, 2019 @trurl I installed unRAID and unraid tells me the disk is 802 GB (instead of 3000 GB), and it says "Unmountable: Unsupported partition layout". Is there any chance I can save this data? Quote Link to comment
itimpi Posted January 14, 2019 Share Posted January 14, 2019 What controller is this disk connected to? It sounds like you might be using a controller that cannot handle disks greater than 2TB in size? 1 Quote Link to comment
caillou Posted January 14, 2019 Author Share Posted January 14, 2019 @itimpi That was exactly it! The data is back! I used an old SATA-to-USB controller. Tried it with another one from the office, and the disk mounted. Can I ask you, what tipped you off? Quote Link to comment
JorgeB Posted January 14, 2019 Share Posted January 14, 2019 9 minutes ago, caillou said: Can I ask you, what tipped you off? 3 hours ago, caillou said: Disk /dev/sdb: 746,5 GiB, Quote Link to comment
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