From: Nick Holland (nickholland-consulting.net)
Date: Fri Aug 27 2010 - 09:19:33 CDT

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On 08/27/10 08:38, Marcus wrote:
> how to fix fstab in single user mode for bootable "Live" USB drive
>
> http://www.openbsd.org/faq/faq14.html#flashmemLive
> says:
> If your target machine has an ahci(4) or SCSI interface, you will
> probably find your USB drive's identifier changing. Having multiple
> versions of your /etc/fstab file may make this easier to "fix" (in
> single user mode).
>
> Install OpenBSD to USB drive in a notbook. the usb drive is
> recognized as "sd1"
>
> Now put the USB drive into another PC an boot from USB. the usb dirve
> is recognized as "sd0".
>
> in the single user mode.
> "fsck -p /&& mount -uw /" not work
> "fsck -p /usr&& mount /usr" not work
> "vi /etc/fstab" not work.
>
> question:
> how to mount root / writable and active vi editor?

mount by the device name rather than fstab...

fsck /dev/sd0a
mount /dev/sd0a /
fsck /dev/sd0d
mount /dev/sd0d /usr # or whatever your /usr partition is
vi /etc/fstab

or... fsck and mount your root partition, and use 'ed(1)' to edit fstab.

Nick.

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