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Hi,

How do I make a GRUB floppy that's formatted with ext2 file system?

Linux is giving me troubles -- mke2fs floppy.img doesn't seem to give me a floppy image with ext2fs, or at least can't be mounted on loopback with mount command.

I need a FS that supports longer filenames than fat12 =/

Jonathan

Hi!

First of all, is the file floppy.img present before you issue the mke2fs command?

If not (which is what I guess), mke2fs doesn't know the size of the image you want to create and therefore probably uses the smallest possible size.

So, what you need to do is:
Then you'll get a ready-to-mount ext2-floppy-image

cheers Joe

Turns out -o loop,uid=blah doesn't work for ext2fs. Shame it doesn't tell you that!

Jonathan

Shame you're making false assomptions!

using -o loop works when the fs starts at the begining of the file.

I never tried with floppy disks so I don't know the offset, but when I mount as a loop a false disk image that I created I do it this way :

1) DOS geometry of the disk

SECTORS=63 # only valid value I know about
SIZE_OF_SECTORS=512 # valids are 512, 1024 and 2048
OFFSET=(( $SECTORS * $SIZE_OF_SECTORS )) # where the first partition starts : 1st sector of the 2nd cylinder of the 1st "disk"

losetup -o $OFFSET /dev/loop0 $my_image.img
mount /dev/loop0 $my_mount_point

so for a floppy, try with a 512 offset or maybe a multiple

Err, the uid part of -o loop doesn't work with ext2. just -o loop works fine -- that's what I was meant to say, sorry.

Oh yeah there is no uid specific option but that is in man (8) mount, but what were you expecting that can't be down using chmod and chown?