* [9fans] 9fat format
@ 2014-04-17 7:30 arisawa
2014-04-17 12:55 ` erik quanstrom
0 siblings, 1 reply; 3+ messages in thread
From: arisawa @ 2014-04-17 7:30 UTC (permalink / raw)
To: Fans of the OS Plan 9 from Bell Labs
Hello,
It is curious for me that if 9fat is formatted by disk/format of 9front,
then 9atom fails in boot with the error message
MBR...PBS2...Bad format or I/O errors
(or PBS1)
In making 9fat, I applied 9atom’s pbslba, 9load, etc except disk/format:
disk/format -b pbslba -d -r 2 /dev/sdC0/9fat 9load 9pc*f plan9.ini
I guess PBS2 claims that format of the allocation table is wrong
because if the 9fat is formatted by disk/format of 9atom
then 9atom can boot up.
term% xd -c /dev/sdC0/9fat # formatted using 9front
...
0000400 f8 ff ff ff 03 00 04 00 05 00 06 00 07 00 \b 00
0000410 \t 00 \n 00 0b 00 0c 00 \r 00 0e 00 0f 00 10 00
0000420 11 00 12 00 13 00 14 00 15 00 16 00 17 00 18 00
0000430 19 00 1a 00 1b 00 1c 00 1d 00 1e 00 1f 00 00
0000440 ! 00 " 00 # 00 $ 00 % 00 & 00 ' 00 ( 00
0000450 ) 00 * 00 + 00 , 00 - 00 . 00 / 00 0 00
Kenji Arisawa
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [9fans] 9fat format
2014-04-17 7:30 [9fans] 9fat format arisawa
@ 2014-04-17 12:55 ` erik quanstrom
2014-04-17 21:39 ` arisawa
0 siblings, 1 reply; 3+ messages in thread
From: erik quanstrom @ 2014-04-17 12:55 UTC (permalink / raw)
To: 9fans
> It is curious for me that if 9fat is formatted by disk/format of 9front,
> then 9atom fails in boot with the error message
> MBR...PBS2...Bad format or I/O errors
> (or PBS1)
> In making 9fat, I applied 9atom’s pbslba, 9load, etc except disk/format:
> disk/format -b pbslba -d -r 2 /dev/sdC0/9fat 9load 9pc*f plan9.ini
9load and its pbslba doesn't do well with fats >= 100mb. how large
is your 9fat?
it is recommended that pbsipl, and iplfat be used with 9atom kernels.
- erik
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [9fans] 9fat format
2014-04-17 12:55 ` erik quanstrom
@ 2014-04-17 21:39 ` arisawa
0 siblings, 0 replies; 3+ messages in thread
From: arisawa @ 2014-04-17 21:39 UTC (permalink / raw)
To: Fans of the OS Plan 9 from Bell Labs
it is 100mb
thanks
2014/04/17 21:55、erik quanstrom <quanstro@quanstro.net> のメール：
>> It is curious for me that if 9fat is formatted by disk/format of 9front,
>> then 9atom fails in boot with the error message
>> MBR...PBS2...Bad format or I/O errors
>> (or PBS1)
>> In making 9fat, I applied 9atom’s pbslba, 9load, etc except disk/format:
>> disk/format -b pbslba -d -r 2 /dev/sdC0/9fat 9load 9pc*f plan9.ini
>
> 9load and its pbslba doesn't do well with fats >= 100mb. how large
> is your 9fat?
>
> it is recommended that pbsipl, and iplfat be used with 9atom kernels.
>
> - erik
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2014-04-17 7:30 [9fans] 9fat format arisawa
2014-04-17 12:55 ` erik quanstrom
2014-04-17 21:39 ` arisawa
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