Installing a new scsi adapter

Is there any need to reformat the scsi hard drive and reinstall the OS
when installing a new scsi adapter? This is something Adaptec appears
to recommend. Thanks

soinie@hhotmail.com wrote in news:9c7b9493iuiaqjupdlf9j11el7j4ibglbb@4ax.com
> Is there any need to reformat the scsi hard drive and reinstall the OS
> when installing a new scsi adapter?

> This is something Adaptec appears to recommend.

Please do not post troll questions.

> Thanks

soinie@hhotmail.com wrote:
> Is there any need to reformat the scsi hard drive and reinstall the OS
> when installing a new scsi adapter? This is something Adaptec appears
> to recommend. Thanks.

There's no reason for extra steps like that.

soinie@hhotmail.com wrote:
> Is there any need to reformat the scsi hard drive and reinstall the OS
> when installing a new scsi adapter? This is something Adaptec appears
> to recommend. Thanks


Under what conditions does Adaptec recommend that? If you are replacing
a defective adapter with an identical one that works, definitely not.

If you were upgrading the higher performance adapter, there MIGHT be
some advantage to doing a low-level format on the drive, to take full
advantage of the new adapter. But you wouldn't NEED to do that.

At Fri, 08 Aug 2008 18:46:52 -0700 Jack Bauer <jb@nowhere.com> wrote:

>
> soinie@hhotmail.com wrote:
> > Is there any need to reformat the scsi hard drive and reinstall the OS
> > when installing a new scsi adapter? This is something Adaptec appears
> > to recommend. Thanks
>
>
> Under what conditions does Adaptec recommend that? If you are replacing
> a defective adapter with an identical one that works, definitely not.
>
> If you were upgrading the higher performance adapter, there MIGHT be
> some advantage to doing a low-level format on the drive, to take full
> advantage of the new adapter. But you wouldn't NEED to do that.

Some of the really old ISA SCSI cards used a different CHS mapping for
SCSI disks. This could cause problems in terms of mapping CHS
addressing to LBA addressing.

>

--
Robert Heller -- Get the Deepwoods Software FireFox Toolbar!
Deepwoods Software -- Linux Installation and Administration
http://www.deepsoft.com/ -- Web Hosting, with CGI and Database
heller@deepsoft.com -- Contract Programming: C/C++, Tcl/Tk

Jack Bauer wrote in news:g7it70$cr9$1@news.parasun.com
> soinie@hhotmail.com wrote:
> > Is there any need to reformat the scsi hard drive and reinstall the OS
> > when installing a new scsi adapter? This is something Adaptec appears
> > to recommend. Thanks
>
> Under what conditions does Adaptec recommend that? If you are replacing
> a defective adapter with an identical one that works, definitely not.

> If you were upgrading the higher performance adapter, there MIGHT
> be some advantage to doing a low-level format on the drive, to take full
> advantage of the new adapter.

Nope.

> But you wouldn't NEED to do that.

All that needs to be done is offer the drivers of that new adapter if it
is not supported by the OS already.

Robert Heller wrote in news:Ro-dnU1lstPaCwDVnZ2dnUVZ_gKdnZ2d@posted.localnet
> At Fri, 08 Aug 2008 18:46:52 -0700 Jack Bauer <jb@nowhere.com> wrote:
> > soinie@hhotmail.com wrote:
> > > Is there any need to reformat the scsi hard drive and reinstall the OS
> > > when installing a new scsi adapter? This is something Adaptec appears
> > > to recommend. Thanks
> >
> >
> > Under what conditions does Adaptec recommend that? If you are replacing
> > a defective adapter with an identical one that works, definitely not.
> >
> > If you were upgrading the higher performance adapter, there MIGHT be
> > some advantage to doing a low-level format on the drive,

> to take full advantage of the new adapter.

There won't be any difference.

> But you wouldn't NEED to do that.

Since there won't be any difference.

> Some of the really old ISA SCSI cards used a different CHS mapping for
> SCSI disks.

It needn't be ISA. First PCI cards did too.

> This could cause problems in terms of mapping CHS addressing to LBA
> addressing.

Nope, it just wouldn't boot.

The only problem with CHS to LBA would arise if the bios ignored the
settings in the MBR altogether and used its preset settings instead.

Folkert Rienstra wrote:
> Robert Heller wrote in news:Ro-dnU1lstPaCwDVnZ2dnUVZ_gKdnZ2d@posted.localnet
>> At Fri, 08 Aug 2008 18:46:52 -0700 Jack Bauer <jb@nowhere.com> wrote:
>>> soinie@hhotmail.com wrote:
>>>> Is there any need to reformat the scsi hard drive and reinstall the OS
>>>> when installing a new scsi adapter? This is something Adaptec appears
>>>> to recommend. Thanks
>>>
>>> Under what conditions does Adaptec recommend that? If you are replacing
>>> a defective adapter with an identical one that works, definitely not.
>>>
>>> If you were upgrading the higher performance adapter, there MIGHT be
>>> some advantage to doing a low-level format on the drive,
>
>> to take full advantage of the new adapter.
>
> There won't be any difference.
>
>> But you wouldn't NEED to do that.
>
> Since there won't be any difference.
>
>> Some of the really old ISA SCSI cards used a different CHS mapping for
>> SCSI disks.
>
> It needn't be ISA. First PCI cards did too.
>
>> This could cause problems in terms of mapping CHS addressing to LBA
>> addressing.
>
> Nope, it just wouldn't boot.
>
> The only problem with CHS to LBA would arise if the bios ignored the
> settings in the MBR altogether and used its preset settings instead.
>

Seems to me, Folkert starts out saying you're wrong, there won't be any
problems, and then eventually admits the problems could be so severe
that it won't even boot.

It's worth noting that Adaptec has had bugs (with some of it's adapters)
which have the effect of erasing the drive when you install a new
adapter. It should have been fixed in the 90's but seems to have
resurfaced in recent years. Hopefully it's very rare, but you sure want
to have everything backed up! I've used many of their adapters without
incident, but do remember this happening to a coworker in '93. Boy, she
was ****ed!

Jack Bauer wrote in news:g83olc$58n$1@news.parasun.com
> Folkert Rienstra wrote:
> > Robert Heller wrote in news:Ro-dnU1lstPaCwDVnZ2dnUVZ_gKdnZ2d@posted.localnet
> > > At Fri, 08 Aug 2008 18:46:52 -0700 Jack Bauer <jb@nowhere.com> wrote:
> > > > soinie@hhotmail.com wrote:
> > > > > Is there any need to reformat the scsi hard drive and reinstall the OS
> > > > > when installing a new scsi adapter? This is something Adaptec appears
> > > > > to recommend. Thanks
> > > >
> > > > Under what conditions does Adaptec recommend that? If you are replacing
> > > > a defective adapter with an identical one that works, definitely not.
> > > >
> > > > If you were upgrading the higher performance adapter, there MIGHT be
> > > > some advantage to doing a low-level format on the drive,
> >
> > > to take full advantage of the new adapter.
> >
> > There won't be any difference.
> >
> > > But you wouldn't NEED to do that.
> >
> > Since there won't be any difference.
> >
> > > Some of the really old ISA SCSI cards used a different CHS mapping for
> > > SCSI disks.
> >
> > It needn't be ISA. First PCI cards did too.
> >
> > > This could cause problems in terms of mapping CHS addressing to LBA
> > > addressing.
> >
> > Nope, it just wouldn't boot.
> >
> > The only problem with CHS to LBA would arise if the bios ignored the
> > settings in the MBR altogether and used its preset settings instead.
> >

> Seems to me, Folkert starts out saying you're wrong,

Perhaps you should learn how to read. I said it wouldn't boot.

> there won't be any problems,

That's the only 'problem', but nothing destructive.

> and then eventually admits the problems could be so severe


Nope, that's the only 'problem'.

> that it won't even boot.

Nope, just expanded on /why/ it wouldn't boot.
In case the drive was a data disk, DOS wouldn't recognize the volume
due to CHS mismatch. The only 'problem' would be user related if he re-
partitioned and formatted the drive out of ignorance, because of that.

>
> It's worth noting that Adaptec has had bugs (with some of it's adapters)
> which have the effect of erasing the drive when you install a new
> adapter. It should have been fixed in the 90's but seems to have
> resurfaced in recent years.

> Hopefully it's very rare,

Must be as I have never heard of it in all the years that I have been here.
It has happened though with updating the SCSI bios that the drive was
written to, when that obviously should not have happened.

> but you sure want to have everything backed up!

> I've used many of their adapters without incident, but do remember
> this happening to a coworker in '93. Boy, she was ****ed!

Squeeze wrote:
> Jack Bauer wrote in news:g83olc$58n$1@news.parasun.com
>> Folkert Rienstra wrote:
>>> Robert Heller wrote in news:Ro-dnU1lstPaCwDVnZ2dnUVZ_gKdnZ2d@posted.localnet
>>>> At Fri, 08 Aug 2008 18:46:52 -0700 Jack Bauer <jb@nowhere.com> wrote:
>>>>> soinie@hhotmail.com wrote:
>>>>>> Is there any need to reformat the scsi hard drive and reinstall the OS
>>>>>> when installing a new scsi adapter? This is something Adaptec appears
>>>>>> to recommend. Thanks
>>>>> Under what conditions does Adaptec recommend that? If you are replacing
>>>>> a defective adapter with an identical one that works, definitely not.
>>>>>
>>>>> If you were upgrading the higher performance adapter, there MIGHT be
>>>>> some advantage to doing a low-level format on the drive,
>>>> to take full advantage of the new adapter.
>>> There won't be any difference.
>>>
>>>> But you wouldn't NEED to do that.
>>> Since there won't be any difference.
>>>
>>>> Some of the really old ISA SCSI cards used a different CHS mapping for
>>>> SCSI disks.
>>> It needn't be ISA. First PCI cards did too.
>>>
>>>> This could cause problems in terms of mapping CHS addressing to LBA
>>>> addressing.
>>> Nope, it just wouldn't boot.
>>>
>>> The only problem with CHS to LBA would arise if the bios ignored the
>>> settings in the MBR altogether and used its preset settings instead.
>>>
>
>> Seems to me, Folkert starts out saying you're wrong,
>
> Perhaps you should learn how to read. I said it wouldn't boot.
>
>> there won't be any problems,
>
> That's the only 'problem', but nothing destructive.
>
>> and then eventually admits the problems could be so severe
>
>
> Nope, that's the only 'problem'.
>
>> that it won't even boot.
>
> Nope, just expanded on /why/ it wouldn't boot.
> In case the drive was a data disk, DOS wouldn't recognize the volume
> due to CHS mismatch. The only 'problem' would be user related if he re-
> partitioned and formatted the drive out of ignorance, because of that.
>
>> It's worth noting that Adaptec has had bugs (with some of it's adapters)
>> which have the effect of erasing the drive when you install a new
>> adapter. It should have been fixed in the 90's but seems to have
>> resurfaced in recent years.
>
>> Hopefully it's very rare,
>
> Must be as I have never heard of it in all the years that I have been here.
> It has happened though with updating the SCSI bios that the drive was
> written to, when that obviously should not have happened.
>
>> but you sure want to have everything backed up!
>
>> I've used many of their adapters without incident, but do remember
>> this happening to a coworker in '93. Boy, she was ****ed!

One thing for sure, you are using two different handles and can't even
keep it straight which one you are using in a particular thread.

Squeeze or Folkert? Unless one guy is impersonating the other.