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How do I find the starting and end block numbers of a file using terminal in Ubuntu?

rated 0 times [ 2] [ 0] / answers: 1 / hits: 1583 / 2 Years ago, wed, may 25, 2022, 11:00:36

Is there any command that will output the beginning and ending hard disk blocks of a file ?
^{(Solution marked accepted)}

Update:

The answers below solve the initial query. ^{I thank 'em all.} But I'm a bit confused with LBA not fitting in the block range shown by fdisk. (however, halving the number aggreees with range; so does that imply LBA blocksize of 2048 ?!?)

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inglehare

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2 Years ago

answered 2 Years ago shionnky · Accepted Answer

Use hdparm:

sudo hdparm --fibmap FILENAME

where FILENAME is the path to your file.

_{Regarding your calculations:}

_{97504*512/1024^2=47,6 that's how you do this.}

_{Regarding the not fitting in the block range:}

_{You circled the NTFS drive in the fdisk output, which ends at LBA 251863039, the hdparm output reports, that the file system on which the tested file resides begins at LBA 251863040. So you are looking at the wrong file system in the fdisk output, because your file is on sda2 not on sda1.}