Re: [uml-devel] No of ubd

[Leendert Meyer <leen.meyer@home.nl>]

On Friday 28 May 2004 20:33, Henrik Nordstrom wrote:
> On Fri, 28 May 2004, Leendert Meyer wrote:
> > To create an ubd partition, one does on the host e.g.
> >
> >   dd if=/dev/zero of=rootfs count=1 bs=1G
> >   mkreiserfs -ff rootfs
> >
> > But how to make an ubd drive?
>
> Partition it using fdisk/sfdisk/whatever..

Ok, here's what I tried:

---8<---8<---8<---8<---8<---8<---
ws-02:/home/leen # dd if=/dev/zero of=rootfs count=1 bs=100M
1+0 records in
1+0 records out
ws-02:/home/leen # fdisk rootfs
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF 
disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.

You must set cylinders.
You can do this from the extra functions menu.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

Command (m for help):
---8<---8<---8<---8<---8<---8<---

I know how to use fdisk. But I need a bit of guidance here. Given *any* 
partitionsize, what are the appropriate values? Is there a formula for that?

And *before* I can partition the disk, are there even more data to fill in?

TIA,

Cheers,

Leen


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