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dizcrypt
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Joined: 29 Jun 2008
Posts: 4

PostPosted: Sun Jun 29, 2008 6:01 am    Post subject: No bootable medium found. Reply with quote

Hi!

I have a problem during boot from a Gentoo 2008.0_beta2 Minimal CD or Gentoo 2007.0 Minimal CD/InstallCD. In the console it looks like

Code:

...
>> Activating mdev
>> Making tmpfs for /newroot
>> Looking for the cdrom
>> Attempting to mount media:- /dev/sda1
...
>> Attempting to mount media:- /dev/sda5
>> Attempting to mount media:- /dev/hda
!! Media not found
>> No bootable medium found. Waiting for new devices...
>> Looking for the cdrom
...
!! Media not found
!! Could not find CD to boot, something else needed!
>> Determinign root device...
!! Could not find the root block device in .


If I exit to shell and try to mount /dev/hda (the actual cdrom device), I got:
Code:

mount: /dev/hda is write-protected, mouting read-only
mount: /dev/hda is write-protected, mouting read-only
mount: /dev/hda is write-protected, mouting read-only
mount: /dev/hda is write-protected, mouting read-only
...
^C
mount: mounting /dev/hda on /mnt failed: Invalid argument

Mount with -t iso9660 parameter works fine.

The cdrom is TSSTcorp DVD+-RW TS-L632H (insalled in DELL 1720 laptop).

PS There are no problems with ubuntu live cd.

-- Added --
Quote:

# dmesg | grep CD
hda: TSSTcorp DVD+/-RW TS-L632H, ATAPI CD/DVD-ROM drive
hda: ATAPI 24X DVD-ROM DVD-R CD-R/RW drive, 2048 Cache
Uniform CD-ROM driver Revision: 3.20
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yabbadabbadont
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PostPosted: Sun Jun 29, 2008 6:21 am    Post subject: Reply with quote

You can use the Ubuntu live cd to do the installation. Just boot it up, then open a terminal window (or two) and then follow the instructions for a manual stage3 installation in the Gentoo Handbook.

http://www.gentoo.org/doc/en/handbook/index.xml

You'll save yourself some time updating the installed system if you use a newer stage3 file from funtoo.org instead of the official ones. The funtoo stages are rebuilt every week, while the official ones are a bit older than that. Either way, you end up with the same system, it is just that you will have fewer updates to do if you use a new stage3 file from the start.
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NathanZachary
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PostPosted: Mon Jun 30, 2008 2:09 am    Post subject: Reply with quote

Just to add to what yabbadabbadont already mentioned, you can use ANY LiveCD that you want, be it *Ubuntu, PCLinuxOS, or the SystemRescueCD (really nice choice in my opinion). Also, you might need to reference some preemptive steps to the handbook, and those steps can be found here:

http://www.gentoo.org/doc/en/altinstall.xml#doc_chap3
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kadragon
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PostPosted: Mon Jun 30, 2008 1:54 pm    Post subject: Reply with quote

try using the kernel option "irqpoll" when you boot
when you're choosing the kernel to load hit e when gentoo is highlighted
in the first line add irqpoll right after /boot/gentoo
so it looks like "kernel /boot/gentoo irqpoll root=/dev/ram0..."
i had the same problem and that fixed it for me
i have to use that option on most other gentoo installations too
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dizcrypt
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PostPosted: Mon Jun 30, 2008 7:11 pm    Post subject: Reply with quote

Thank you for your answers!

I managed to boot from a 2008.0 beta 2 live cd (2007.0 not tested).

PS Kernel option "irqpoll" does not work for me.
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