[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Error: Unknown Filesystem

From: Randy Decker
Subject: Re: Error: Unknown Filesystem
Date: Sat, 27 Oct 2012 10:52:24 -0700 (GMT-07:00)


I am not skilled in grub but noticed what appears to be a missing "(" and two 
listings of (hd1,gpt1) in the response to grub rescue> ls.  See below.

-----Original Message-----
>From: Petro <address@hidden>
>Sent: Oct 27, 2012 5:08 AM
>To: address@hidden
>Subject: Error: Unknown Filesystem
>I'm clearly doing something very stupid here and just *not* seeing my 
>I've read through the documentation on and a 
>few other places, and I'm just not seeing my mistake.
>I am trying to create a "multiboot" usb installer like this gent here:
>But I've found similar instructions in other places.
>The one difference is that I can't use vfat/fat32 as I need, or at least 
>want to use ISOs that are larger than that would allow.
>I run parted, and create 2 partitions thusly:
>address@hidden ~]# parted /dev/sdb
>GNU Parted 3.0
>Using /dev/sdb
>Welcome to GNU Parted! Type 'help' to view a list of commands.
>(parted) print
>Model: A-DATA USB Flash Drive (scsi)
>Disk /dev/sdb: 16.2GB
>Sector size (logical/physical): 512B/512B
>Partition Table: gpt
>Number  Start   End     Size    File system  Name  Flags
>  1      1049kB  200MB   199MB                boot  bios_grub
>  2      200MB   16.2GB  16.0GB  ext3         data
>Then I mkfs.vfat as such:
>address@hidden ~]# mkfs.vfat -n "multiboottest" /dev/sdb1
>mkfs.vfat 3.0.12 (29 Oct 2011)
>Mount it:
>address@hidden ~]# mount /dev/sdb1 /mnt/1/
>Run grub install (I had to compile grub2 meself as I'm using Scientific 
>Linux 6.3 in a VM and Fedora Core on the physical machine. Oh, wait. 
>Fedora Core is at 1.99. Let's try those bits...
>No difference.
>address@hidden ~]# /opt/grub2/sbin/grub-install --no-floppy 
>--root-directory=/mnt/1 /dev/sdb
>Installation finished. No error reported.
>address@hidden ~]# umount /dev/sdb1
>address@hidden ~]# mount /dev/sdb1 /mnt/1/
>mount: you must specify the filesystem type
>Uh.... Huh.
>So I stick the USB key in the lapdog and reboot.
>GRUB loading.
>Welcome to GRUB!
>error: unknown filesystem.
>Entering rescue mode...
>grub rescue>
>grub rescue> ls
>(hd0) (hd0,gpt2) (hd0,gpt1) (hd1) hd1,gpt1) (hd1,gpt3) (hd1,gpt2) (hd1,gpt1)
There seems to be a "(" missing here. Should this be:
(hd0) (hd0,gpt2) (hd0,gpt1) (hd1) (hd1,gpt3) (hd1,gpt2) (hd1,gpt1)
>grub rescue> set
>I get similar behavior if I use a ~250GIB WD USB drive.
>What am I messing up?
>address@hidden address@hidden
>Help-grub mailing list

reply via email to

[Prev in Thread] Current Thread [Next in Thread]