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ronald_cn
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Joined: 13 Jan 2003
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PostPosted: Mon Jan 13, 2003 9:18 am    Post subject: how to create a /dev file?! Reply with quote

my cdrom is CD RW PIO 4 with IDE.but it can't be found at boot time.and how can i create it under dev directory?
i tried....see below
#mknod /dev/optcd0 b 17 0
#chmod 600 /dev/optcd0
#ln -s /dev/optcd0 /dev/cdrom
but the error message was
#mount /mnt/cdrom
-bash:/dev/cdrom is not a valid block device.
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pilla
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PostPosted: Mon Jan 13, 2003 1:43 pm    Post subject: Reply with quote

Are you using devfs? If you are, you probably forgot to compile the proper hardware support for your disk.
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phunkphorce
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Joined: 22 Nov 2002
Posts: 145

PostPosted: Mon Jan 13, 2003 1:48 pm    Post subject: Reply with quote

I guess that if it can't be detected at boot time, it won't exist for the system, so there is no point in creating any /dev entry because

a) Even if you succeeded in creating the /dev entry manually, if the cd is not detected, it is as it was not there.

b) If you're using devfs, /dev entries are generated automatically and next time you boot, the one you created would be gone.

I'd suggest that you have a look at your kernel config. Most likely you forgot to include some important module or you chose the wrong one for your cd-rom, and check as well the output of the dmesg command to see what's the error given by the kernel.
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ronald_cn
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PostPosted: Tue Jan 14, 2003 8:37 am    Post subject: thank you very much! Reply with quote

i have read the Gentoo FAQ,and compilied DEVs in the kernel.and my cdrom is working.it has another name "hdc",and then i
#ln -s /dev/hdc /dev/cdrom
#mount /mnt/cdrom
its work!
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ronald_cn
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PostPosted: Tue Jan 14, 2003 8:47 am    Post subject: Reply with quote

hehe...thank you very much!!!!
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phunkphorce
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PostPosted: Wed Jan 15, 2003 9:11 am    Post subject: Reply with quote

ronald_cn wrote:
hehe...thank you very much!!!!

You're welcome 8)
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