Re: DVD-RAM media detected with wrong number of blocks (2.4.7)

From: Jens Axboe (
Date: Tue Jul 24 2001 - 08:04:24 EST

On Tue, Jul 24 2001, David Johnson wrote:
> On 7/24/01, Jens Axboe wrote:
> >On Mon, Jul 23 2001, David Johnson wrote:
> >>When attempting to create an ext2 partition on a dvd-ram (2.6G/5.2G)
> >>media the number of blocks is detected wrong causing only half of the
> >>disk to be usable. When creating the filesystem with mke2fs only
> >>609480 2K blocks are allowed instead of 1218960 2K blocks, and I end
> >>up with a 1.2GB partition instead of 2.4GB one. The 1.2GB fs works
> >>fine, it's just a bit small :(
> >>
> >>This is with 2.4.7 using a Creative DVD-RAM drive (1216S) on an Adaptec
> >>2940UW.
> >>
> >>The correct number of blocks is detected in 2.4.6
> >
> >Does this work?
> >
> Shifting another bit causes the size to get cut in half again, not
> shifting at all appears to be the correct thing to do.

Yes of course, braino. So eliminating the shift gets the right size for
you, correct?

Jens Axboe

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to More majordomo info at Please read the FAQ at

This archive was generated by hypermail 2b29 : Tue Jul 31 2001 - 21:00:15 EST