Re: [9fans] Plan9 installation invading the other partitions?

["Lluís Batlle" <viriketo@gmail.com>]

While trying to get certain Plan9 isn't guilty, I looked at the SMART
data of the HD. I'm not an expert on that, but the error log says:
=== START OF READ SMART DATA SECTION ===
SMART Error Log Version: 1
No Errors Logged

The information of my HD is:
SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE
UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   072   068   034    Pre-fail
Always       -       189802098
  3 Spin_Up_Time            0x0003   070   070   000    Pre-fail
Always       -       0
  4 Start_Stop_Count        0x0032   099   099   020    Old_age
Always       -       1389
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail
Always       -       0
  7 Seek_Error_Rate         0x000f   081   060   030    Pre-fail
Always       -       154801045
  9 Power_On_Hours          0x0032   087   087   000    Old_age
Always       -       11801
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail
Always       -       0
 12 Power_Cycle_Count       0x0032   099   099   020    Old_age
Always       -       1677
194 Temperature_Celsius     0x0022   047   051   000    Old_age
Always       -       47
195 Hardware_ECC_Recovered  0x001a   072   068   000    Old_age
Always       -       189802098
197 Current_Pending_Sector  0x0012   100   100   000    Old_age
Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age
Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age
Always       -       0
200 Multi_Zone_Error_Rate   0x0000   100   253   000    Old_age
Offline      -       0
202 TA_Increase_Count       0x0032   100   253   000    Old_age
Always       -       0

I hope you understand those values better than I do, and can take a conclusion.

I never had a SuperBlock overwritten, and I deal with PC partitions
since some years ago. I've only seen that after installing Plan9. I
even didn't modify my grub before finding the SB error.

I forgot looking at the partition information in Plan9 - now I can't,
I will soon say something about that in this same thread.

Thanks,
Lluís.

2006/7/20, Russ Cox <rsc@swtch.com>:
> Apparently someone removed the part in the
> installation instructions where it says you should
> backup your hard disk before installing Plan 9.
>
> That said, I don't believe that Plan 9 actually wrote
> to your hda7.  That's a very long way away from the
> Plan 9 partition.  I think it's more likely that your disk
> is going bad.
>
> In Plan 9, cat /dev/sdC0/ctl and see whether the block
> numbers given for the offsets of the various partitions
> make sense compared against your Linux fdisk output.
>
> Russ
>