I just created a USB bootable for ubuntu (but also tried other distrib) but I did not succeed to go on it since GRUB display this:

error: unknow filesystem
Entering rescue mode...
grub rescue> ls

I have a XPS 13 (9360) and I don't know how to fix this problem... I tried some solutions proposed over the web but it did not works for me.

Resume: I put ubuntu (version 17.04) on an USB flash drive for boot on it and install ubuntu but I can't since GRUB (from the USB flash drive) give me this error. I tried this for example but it failed every time after insmod normal.

PS: I switch the SATA mode from RAID to AHCI but I don't think it's related since booting on the USB flash drive should not depend on my SSD.

  • 1
    Did you try the steps described at askubuntu.com/questions/119597/… ? – Julie Pelletier Apr 23 '17 at 14:35
  • Yes, it did not work for me. I have not the same output, ex I see (hd0)(hd1) and not (hdX,Y) – mykiwi Apr 23 '17 at 15:06
  • That seems to show that you didn't partition the drive, which apparently doesn't prevent grub from loading, therefore it could be bootable. – Julie Pelletier Apr 23 '17 at 15:11
  • Yes. But each time I try insmod ... I get error: no such partition – mykiwi Apr 23 '17 at 15:20
  • I think this can be solved but your best bet is probably to partition the drive properly and reinstall. – Julie Pelletier Apr 24 '17 at 2:57

I think you may use Boot Repair to Repair you grub .and when you Log On the Boot Repair system you may use fdisk -l to lookup you Hard Disk . and with worst-case is mean you must backup your file and reinstall the system

  • I don't have grub installed yet... It's the one from my USB flash drive for run the live CD. – mykiwi Apr 24 '17 at 8:24
  • so i think you may reform ubnutu live cd, this maybe about ubuntu ISO md5 , redownload and check the iso md5 right – zore lu Apr 25 '17 at 3:43

To bypass this problem, here it's what I did:

  • use rufus
  • choose "MBR partition schema for UEFI"
  • write in DD image mode
  • This does not answer your own question. It shows one of multiple ways to properly write a bootable USB drive but it doesn't show how to fix your issue. This makes the question completely useless. – Julie Pelletier Apr 26 '17 at 2:53

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