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Old 16th March 2017
sdowaxon sdowaxon is offline
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Default OpenBSD 6.0 Install: Full Disk Encryption on Toshiba Satellite

I am trying to install OpenBSD 6.0 on a Toshiba Satellite:
  • AMD Turion 64 X2 mobile technology TL-58 / 1.9 GHz
  • 3 GB DDR2 RAM
  • 500 GB Western Digital Scorpio Black 7200 RPM

I had previously installed 5.5 on it 2 years ago, then, I had openSUSE installed, but was unhappy with the performance. So, I tried to install OpenBSD 6.0 and ran into a problem with full disk encryption.

Code:
# bioctl -c C -l /dev/sd0a softraid0
Passphrase:
softraid0: incorrect key or passphrase
softraid0: incorrect key or passphrase
How do I erase the RAID that has the previous passphrase, which I have forgotten? I searched on Google and didn't find anything to help.

EDIT: Tried using:

Code:
# bioctl -d /dev/sd0
bioctl: Can't locate /dev/sd0 device via /dev/bio
and:

Code:
# bioctl -d /dev/sd0a
bioctl: BIOCDELETERAID: Inappropriate ioctl for device
Per bioctl(8) man page

Last edited by sdowaxon; 16th March 2017 at 07:08 PM.
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Old 16th March 2017
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jggimi jggimi is offline
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You can change the passphrase with bioctl(8) -P, but you cannot erase it without wiping the metadata at the front of the physical partition used by the softraid virtual device (sd0a in your example). Doing this will eliminate access to the stored data, of course.

This will write zeros over the first megabyte of partition sd0a:

# dd if=/dev/zero of=/dev/rsd0a bs=1m count=1

After this, you should be able to create a new softraid device to replace the old one.
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Old 16th March 2017
TronDD TronDD is offline
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jggimi beat me to it.

I'll add, follow the FAQ:
https://www.openbsd.org/faq/faq14.html#softraid

There is a Full Disk Encryption section.
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Old 16th March 2017
sdowaxon sdowaxon is offline
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jggimi,

That worked perfectly, thank you!
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Old 16th March 2017
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jggimi jggimi is offline
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Glad you got it working.

The FAQ entry that TronDD recommended uses /dev/random rather than /dev/zero. Both work, but /dev/random may better obscure the start of data sectors for the softraid device.
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