If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Physical sector location
If you have a given sector, say 5000th sector (logical), how can you
get the physical location in: platters, tracks and sectors? |
#2
|
|||
|
|||
This severely depends on particular hard drive vendor, and is usually the
non-disclosed information. -- Maxim Shatskih, Windows DDK MVP StorageCraft Corporation http://www.storagecraft.com "Nuno Magalhaes" wrote in message om... If you have a given sector, say 5000th sector (logical), how can you get the physical location in: platters, tracks and sectors? |
#3
|
|||
|
|||
Nuno Magalhaes wrote:
If you have a given sector, say 5000th sector (logical), how can you get the physical location in: platters, tracks and sectors? Most scsi devices support the Translate Address diagnostic page (0x40). You can access this by using scu for example (http://www.bit-net.com/~rmiller/kits/scu/scu.html) : scu show diagnostic pages Diagnostic Pages Supported by Device [1/1/0] (RZ26L): Supported Diagnostics Page (Code = 0x00) Translate Address Page (Code = 0x40) scu translate address block lba 9999 to bfi summary Logical Block 9999 - Cylinder 38, Head 4, Bfi 2254 scu translate address block lba 9999 to physical Translate Address Diagnostic (Page 0x40): Page Code: 0x40 Page Length: 10 Supplied Format: Logical Block Translate Format: Physical Sector Alternate Track of Medium: No Alternate Sector of Medium: No Reserved Area of Medium: No Cylinder Number: 9 Head Number: 4 Sector Number: 47 Arne Joris |
#4
|
|||
|
|||
On Wed, 05 Nov 2003 19:21:20 GMT, Arne Joris
wrote: Nuno Magalhaes wrote: If you have a given sector, say 5000th sector (logical), how can you get the physical location in: platters, tracks and sectors? Most scsi devices support the Translate Address diagnostic page (0x40). [ Snip ] scu translate address block lba 9999 to physical Translate Address Diagnostic (Page 0x40): Page Code: 0x40 Page Length: 10 Supplied Format: Logical Block Translate Format: Physical Sector Alternate Track of Medium: No Alternate Sector of Medium: No Reserved Area of Medium: No Cylinder Number: 9 Head Number: 4 Sector Number: 47 Note that some drives don't bother to provide "real" values, just CHS values that approximate reality, e.g. by using an average number of sectors per track across the whole drive. The results are thus indicative, not perfect! Arne Joris Malc. |
#5
|
|||
|
|||
|
#7
|
|||
|
|||
"Nuno Magalhaes" wrote in message om... (Nuno Magalhaes) wrote in message . com... If you have a given sector, say 5000th sector (logical), how can you get the physical location in: platters, tracks and sectors? I've measured disk access times from sector 0 (track 0) to the start of other tracks and got this results: from to access time (ms) 0..126 - 1.3568 (track 3) 0..189 - 2.0449 (track 4) 0..252 - 2.7442 (track 5) 0..315 - 3.4373 (track 6) 0..378 - 4.1318 (track 7) 0..441 - 4.8222 (track 8) 0..504 - 5.5197 (track 9) 0..567 - 5.3046 (track 10) 0..630 - 4.6257 (track 11) 0..693 - 5.3169 (track 12) 0..756 - 6.0181 (track 13) 0..819 - 8.9897 (track 14) 0..882 - 9.6792 (track 15) 0..945 - 10.3711 (track 16) 0..1008 - 1.8192 (track 17) 0..1071 - 2.5135 (track 18) 0..1134 - 3.1956 (track 19) 0..1197 - 3.8969 (track 20) 0..1260 - 4.5939 (track 21) 0..1323 - 5.2856 (track 22) 0..1386 - 5.9845 (track 23) 0..1449 - 6.6760 (track 24) 0..1512 - 7.3691 (track 25) 0..1575 - 8.0571 (track 26) 0..1638 - 8.7536 (track 27) 0..1701 - 9.4473 (track 28) 0..1764 - 10.1306 (track 29) 0..1827 - 10.8335 (track 30) 0..1890 - 11.5330 (track 31) 0..1953 - 1.1275 (sometimes 12 ms) (track 32) 0..2016 - 3.6675 (track 33) What should this mean? Ignoring the slightly anomalous figures for 'tracks' 11 through 13, it appears to mean that there is one recording surface, that a single-track seek takes around 0.5 ms., that your disk rotates at 5400 rpm, and that track 0 on the disk contains a bit under 1000 sectors (which kind of sounds like it might be a Seagate Barracuda with track 0, as usual, the outermost track). - bill |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Win2K BSOD - "Physical memory dump to disk" - what does it mean? | Nate C. | Homebuilt PC's | 5 | August 19th 04 09:20 PM |
available physical memory | BLOCKSTER | Dell Computers | 2 | January 1st 04 03:49 AM |
Physical sector location | Nuno Magalhaes | General | 3 | November 6th 03 02:48 AM |
Physical repair for IDE harddrive | WDsux | General | 36 | August 29th 03 04:24 AM |
Dumping Physical Memory?? | Wheat Muncher | General | 0 | July 25th 03 05:58 AM |