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yukuan
Guest
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 Posted:
Sat Jun 25, 2005 11:14 pm Post subject:
Question about Microsoft's Format command |
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| Are a disk's bad sectors marked while formatting? |
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Ron Reaugh
Guest
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| Posted:
Sat Jun 25, 2005 11:24 pm Post subject:
Re: Question about Microsoft's Format command |
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"yukuan" <yukuan.jiang@gmail.com> wrote in message
news:1119723267.948141.224470@g49g2000cwa.googlegroups.com...
| Quote: | Are a disk's bad sectors marked while formatting?
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The simple answer is yes. But I suspect you need to ask a more precise
question. What do you have in mind when you say "bad sectors marked "? |
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yukuan
Guest
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| Posted:
Sat Jun 25, 2005 11:31 pm Post subject:
Re: Question about Microsoft's Format command |
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I means it recording which sector is bad in the FAT, while formatting
with fat16, fat32 etc. |
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Ron Reaugh
Guest
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| Posted:
Sat Jun 25, 2005 11:36 pm Post subject:
Re: Question about Microsoft's Format command |
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"yukuan" <yukuan.jiang@gmail.com> wrote in message
news:1119724277.788790.61400@g14g2000cwa.googlegroups.com...
| Quote: | I means it recording which sector is bad in the FAT, while formatting
with fat16, fat32 etc.
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In general on a modern HD there should be no bad sectors. |
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yukuan
Guest
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| Posted:
Sun Jun 26, 2005 12:02 am Post subject:
Re: Question about Microsoft's Format command |
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| How about the virtual HD, flash pendrive? |
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Maxim S. Shatskih
Guest
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| Posted:
Sun Jun 26, 2005 12:16 am Post subject:
Re: Question about Microsoft's Format command |
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Yes. FORMAT is who creates the new empty FS volume, the bad blocks are
marked during this.
--
Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
maxim@storagecraft.com
http://www.storagecraft.com
"yukuan" <yukuan.jiang@gmail.com> wrote in message
news:1119723267.948141.224470@g49g2000cwa.googlegroups.com...
| Quote: | Are a disk's bad sectors marked while formatting?
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yukuan
Guest
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| Posted:
Sun Jun 26, 2005 8:15 am Post subject:
Re: Question about Microsoft's Format command |
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Still,
during the lifetime after FORMAT, what's going on if the storage gets
new bad blocks?
Will these bad blocks be recorded? |
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Ron Reaugh
Guest
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| Posted:
Sun Jun 26, 2005 8:15 am Post subject:
Re: Question about Microsoft's Format command |
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"yukuan" <yukuan.jiang@gmail.com> wrote in message
news:1119764390.690762.268870@g43g2000cwa.googlegroups.com...
| Quote: | THX all you for these response.
I still have some questions:
How does FORMAT decide that a block is bad?
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Writes it and sees if it can be read.
| Quote: | Does It use the procedure of write, read and compare.
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Right but I don't think there's a compare.
| Quote: | or just decide bad block via got a action-fail message from the
storage's controller?
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That happens on a write fail and a read fail. The read fail is the usual
case. |
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yukuan
Guest
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| Posted:
Sun Jun 26, 2005 8:15 am Post subject:
Re: Question about Microsoft's Format command |
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THX all you for these response.
I still have some questions:
How does FORMAT decide that a block is bad?
Does It use the procedure of write, read and compare.
or just decide bad block via got a action-fail message from the
storage's controller? |
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Ron Reaugh
Guest
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| Posted:
Sun Jun 26, 2005 2:18 pm Post subject:
Re: Question about Microsoft's Format command |
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"yukuan" <yukuan.jiang@gmail.com> wrote in message
news:1119767127.694486.251990@g43g2000cwa.googlegroups.com...
| Quote: | Still,
during the lifetime after FORMAT, what's going on if the storage gets
new bad blocks?
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Mostly the drive detects a block going bad before it's completely
unreadable. The drive flaws(replaces it with a good one) the sector and you
never see a thing. Occasionally if the sector goes bad while it's holding
file data then the file will become unreadable and the sector show up as a
visible bad sector. When many visible bad sectors start showing then the
drive is likely about to die.
| Quote: | Will these bad blocks be recorded?
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"recorded"? |
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yukuan
Guest
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| Posted:
Mon Jun 27, 2005 7:38 am Post subject:
Re: Question about Microsoft's Format command |
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Ron Reaugh wrote:
| Quote: | Mostly the drive detects a block going bad before it's completely
unreadable. The drive flaws(replaces it with a good one) the sector and you
never see a thing. Occasionally if the sector goes bad while it's holding
file data then the file will become unreadable and the sector show up as a
visible bad sector. When many visible bad sectors start showing then the
drive is likely about to die.
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Are the visible bad sectors going to be marked into the FAT?
| Quote: | Will these bad blocks be recorded?
"recorded"?
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I meant the new visible bad blocks are marked/signed/redorded into the
FAT.
Thank you. |
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Ron Reaugh
Guest
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| Posted:
Mon Jun 27, 2005 7:43 am Post subject:
Re: Question about Microsoft's Format command |
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"yukuan" <yukuan.jiang@gmail.com> wrote in message
news:1119839887.413654.4400@g44g2000cwa.googlegroups.com...
| Quote: | Ron Reaugh wrote:
Mostly the drive detects a block going bad before it's completely
unreadable. The drive flaws(replaces it with a good one) the sector and
you
never see a thing. Occasionally if the sector goes bad while it's
holding
file data then the file will become unreadable and the sector show up as
a
visible bad sector. When many visible bad sectors start showing then
the
drive is likely about to die.
Are the visible bad sectors going to be marked into the FAT?
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Visible = = "marked into the FAT" |
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Maxim S. Shatskih
Guest
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| Posted:
Mon Jun 27, 2005 4:16 pm Post subject:
Re: Question about Microsoft's Format command |
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| Quote: | I still have some questions:
How does FORMAT decide that a block is bad?
Does It use the procedure of write, read and compare.
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No, it uses IOCTL_DISK_VERIFY.
--
Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
maxim@storagecraft.com
http://www.storagecraft.com |
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Ramesh Pun
Guest
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| Posted:
Wed Jun 29, 2005 5:23 am Post subject:
Re: Question about Microsoft's Format command |
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That is a funny statement :-)
"Ron Reaugh" <ron-reaugh@worldnet.att.net> wrote in message
news:Fuhve.1025350$w62.420029@bgtnsc05-news.ops.worldnet.att.net...
| Quote: |
"yukuan" <yukuan.jiang@gmail.com> wrote in message
news:1119724277.788790.61400@g14g2000cwa.googlegroups.com...
I means it recording which sector is bad in the FAT, while formatting
with fat16, fat32 etc.
In general on a modern HD there should be no bad sectors.
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Ron Reaugh
Guest
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| Posted:
Wed Jun 29, 2005 8:16 am Post subject:
Re: Question about Microsoft's Format command |
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"Ramesh Pun" <spamme@spamme.com> wrote in message
news:11c3qf14t25pg2a@corp.supernews.com...
| Quote: | That is a funny statement :-)
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A correct one however. I should have said no visible bad sectors. Every
drive has lots of bad sectors but the drive itself keeps these isolated and
out of the way and invisible.
| Quote: |
"Ron Reaugh" <ron-reaugh@worldnet.att.net> wrote in message
news:Fuhve.1025350$w62.420029@bgtnsc05-news.ops.worldnet.att.net...
"yukuan" <yukuan.jiang@gmail.com> wrote in message
news:1119724277.788790.61400@g14g2000cwa.googlegroups.com...
I means it recording which sector is bad in the FAT, while formatting
with fat16, fat32 etc.
In general on a modern HD there should be no bad sectors.
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