Re: FC2 - anaconda - bootdisk creation
From: Jim Cornette (fc-cornette_at_sbcglobal.net)
Date: 06/20/04
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- In reply to: Sean Estabrooks: "Re: FC2 - anaconda - bootdisk creation"
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Date: Sun, 20 Jun 2004 00:36:28 -0400 To: For users of Fedora Core releases <fedora-list@redhat.com>
Sean Estabrooks wrote:
> On Sat, 19 Jun 2004 00:19:48 -0400
> Jim Cornette <jim-cornette@sbcglobal.net> wrote:
>
>
>
>>Does this mean that my system comes up with the exact value
>>co-incidentally? Or does this mean that mkbootdisk always tries to make
>>the image reflect the size of a floppy? Would a larger than 1474560
>>vmlinuz and initrd fail or cut off the end of the file, post 1474560?
>
>
> The image will be exactly floppy size even if it is not completely full.
> You can change the size with the --size option. Take a look at
>
> # man mkbootdisk
>
This option I noticed while reading the man page for mkbotdisk. I
assumed the default would be for a 1.44 (or 1474560 :-) ) floppy.
>
>
>>-rw-r--r-- 1 root root 190569 Jun 14 21:07 initrd-2.6.6-1.435.img
>>-rw-r--r-- 1 root root 1203768 Jun 14 09:23 vmlinuz-2.6.6-1.435
>>
>>1203768 + 190569 = 1394337
>>
>>I did the below command and ended up with a larger image.
>>
>>I burned the disk with the newer iso image, in order to see what was on
>>the disk. This had the /isolinux directory and the trans.tbl file.
>
>
> As an aside, you don't have to burn these images to see what is
> inside them. You can mount them using the "loopback" interface.
> Here is an example:
>
> # mount /tmp/testboot.iso /mnt/cdrom -oloop
>
> This would mount the image just like it was burned and sitting
> in the cdrom drive.
>
Good pointer.
I tried this command and it worked like a charm. It even added an icon
on the desktop for the loop mount.
I am glad that I wasted a disc (given to me anyway) to make the CDR with
the below options. I booted with the burned image and found that I lost
my tapping feature for my laptop. I assume that you would have to type
in the magic incantation during boot to get tapping to work, when
booting from iso or floppy.
>
>>mkbootdisk 2.6.6-1.435 --iso --device /tmp/testboot.iso
>>
>>Size of boot image is 4 sectors -> No emulation
>>[root@jcsevern root]# ls -la /tmp/testboot.iso
>>-rw-r--r-- 1 root root 1794048 Jun 19 00:00 /tmp/testboot.iso
>>
>>Now I have a boot iso! I don't have a built in floppy on this laptop.
>>
>
Thanks!
Jim
>
> Sean
>
>
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- Previous message: Jeff Vian: "Re: tail of two scsis"
- In reply to: Sean Estabrooks: "Re: FC2 - anaconda - bootdisk creation"
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