[ydl-gen] USB Drive - correction
Derick Centeno
aguilarojo at verizon.net
Mon Jan 23 08:56:44 MST 2006
Hi Rev:
I have to correct myself. pdisk defines each sector block as 512
bytes, not 512K bytes. You can read more details here:
http://www.cyberflunk.com/ans/0115.html
http://www.google.com/search?q=pdisk+block+size&start=0&ie=utf
-8&oe=utf-8&client=firefox-a&rls=org.mozilla:en-US:official
The "base" is where the mount point for a sector begins; the length is
the amount of blocks in that sector.
Best wishes...
On Jan 22, 2006, at 10:02 PM, Derick Centeno wrote:
> Hi Rev:
> I think I mentioned elsewhere that Linux can only read hfs+ and
> read/write hfs.
>
> Refer to:
> http://www.terrasoftsolutions.com/support/solutions/ydl_general/usb-
> device.shtml
>
> pdisk is tricky; you have to learn to think as it does where each
> sector is 512K blocks. Also what it refers to as length is the where
> the mount point begins from one sector to another. Also you have to
> remember to convert from blocks to MGs and Gigs. Of course, the
> computer can display this automatically, but you won't understand it
> unless you comprehend the calculations behind the lablels (and why
> those values are either correct or not). Indeed, understanding the
> nuances better enables you to partition your drive more efficiently as
> well. You can download the manual for YDL 4.0 and YDL 3.0/3.0.1 which
> discusses a bit about it. Read as much as you can:
>
> http://www.terrasoftsolutions.com/support/installation/
>
> Unfortunately all any OS X or OS 9 (or any other Apple utility) can do
> is erase and format the drive either in hfs or free format. pdisk and
> another application -- called parted -- I believe -- can create the
> ext3 file format Linux understands. pdisk can write over hfs or free
> format. pdisk can read and write to hfs, but there is little
> usefulness in that as most work will be done in Linux eventually.
>
> In other words, no Apple utility can create or read ext3 file format
> which Linux uses. You will just have to dive into Linux and "let go"
> of Apple utilities. It can be done.... trust the Force, Rev. :)
>
> Best wishes...
>
>
> On Jan 22, 2006, at 7:59 PM, rev rob wrote:
>
>> Thanks again, Derick.
>> The move to 4.0 went well on the iMac 233. Granted it took a
>> little bit of time with the speed of the processor and all. But all in
>> all, very smooth. Can't get the screen centered though, it's a little
>> too far left.
>> I tried to mount the usb drive like this after making the folder sam
>>
>> mount /dev/sda1 hfsplus /mnt/sam
>> and
>> mount -t hfsplus /dev/sda1 /mnt/sam
>>
>> neither worked. It said hfsplus was not supported by the kernel.
>>
>> Also I tried pdisk. It seems like a nice app but I don't know about
>> block and length settings.
>> So I reformatted the using os x as Mac os extended (not journeled).
>> Hey just a thought but can use disk utility to format the drive to
>> something ydl will be able to mount? Also, I have a machine running
>> OS9, could I do something with Drive Setup?
>> Thanks
>> rob
>> On 1/22/06, Derick Centeno <aguilarojo at verizon.net> wrote:
>>> Hi rev:
>>> Unfortunately moving up to YDL 4 will not be so simple with the
>>> hardware you have. You will have to change your BootX settings
>>> specifically for YDL 4; it may be best to follow the instructions
>>> discussed here:
>>>
>>> http://yellowdog-board.com/viewtopic.php?t=249
>>>
>>> You can also go to to this link on Google for other topics related to
>>> this problem:
>>>
>>> http://www.google.com/search?q=BootX%2C+YDL+4.0&start=0&ie=utf
>>> -8&oe=utf-8&client=firefox-a&rls=org.mozilla:en-US:official
>>>
>>> Best wishes....
>>>
>>> On Jan 21, 2006, at 6:31 PM, rev rob wrote:
>>>
>>>> THANK YOU so much for your help and time.
>>>> i tried:
>>>> tail -f /var/log/messages
>>>> and it seems my kernel doesn't support usb devices. So I'm
>>>> downloading
>>>> the iso's for ydl 4.0.
>>>> I'll try that and keep you informed on my progress.
>>>> Again thanks so much
>>>> rob
>>>>
>>>> On 1/21/06, Derick Centeno <aguilarojo at verizon.net> wrote:
>>>>> Hi rev:
>>>>> I'll assume you read and had no trouble understanding the previous
>>>>> links I recommended to you. From there once your drive is mounted
>>>>> all
>>>>> you need to do is use pdisk to wipe out/erase your USB drive so
>>>>> that
>>>>> it
>>>>> is formated for use as a LInux drive. That's it, of course you are
>>>>> clear that you'll have to set mount points for the USB drive, a
>>>>> name
>>>>> and create a directory within /mnt using that same name. So let's
>>>>> say
>>>>> the name you choose is charles. Then:
>>>>>
>>>>> # cd /mnt
>>>>> # mkdir charles
>>>>>
>>>>> From then on when you mount that drive you can do:
>>>>>
>>>>> # mount /mnt/charles
>>>>>
>>>>> and that should be it.
>>>>>
>>>>> Best wishes...
>>>>>
>>>>> On Jan 21, 2006, at 2:32 PM, rev rob wrote:
>>>>>
>>>>>> Hi again and special thanks to Derick,
>>>>>> I'm running YDL 3.01 on my iMac 233 with kernel 2.4.22. I want to
>>>>>> an
>>>>>> external usb drive I have for more storage since the internal iMac
>>>>>> drive is only 4.3G. The drive has some things on it from os x
>>>>>> that I
>>>>>> know longer need. What do I have to do make this USB drive work
>>>>>> with
>>>>>> my linux box?
>>>>>> TIA and have a great day
>>>>>> Rob
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>>>>>>
>>>>>
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