What is iastor.sys?
iastor.sys is part of Intel Matrix Storage Manager driver and developed by Intel Corporation according to the iastor.sys version information.
iastor.sys's description is "Intel Matrix Storage Manager driver"
iastor.sys is digitally signed by Microsoft Windows Hardware Compatibility Publisher.
iastor.sys is usually located in the 'C:\WINDOWS\system32\drivers\' folder.
None of the anti-virus scanners at VirusTotal reports anything malicious about iastor.sys.
If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.
Vendor and version information [?]
The following is the available information on iastor.sys:
| Property | Value |
|---|---|
| Product name | Intel Matrix Storage Manager driver |
| Company name | Intel Corporation |
| File description | Intel Matrix Storage Manager driver |
| Internal name | iaStor.sys |
| Original filename | iaStor.sys |
| Legal copyright | Copyright(C) Intel Corporation 1994-2005 |
| Product version | 5.5.0.1035 |
| File version | 5.5.0.1035 |
Here's a screenshot of the file properties when displayed by Windows Explorer:
| Product name | Intel Matrix Storage Manager driver |
| Company name | Intel Corporation |
| File description | Intel Matrix Storage Manager driver |
| Internal name | iaStor.sys |
| Original filename | iaStor.sys |
| Legal copyright | Copyright(C) Intel Corporation 1994-.. |
| Product version | 5.5.0.1035 |
| File version | 5.5.0.1035 |
Digital signatures [?]
iastor.sys has a valid digital signature.
| Property | Value |
|---|---|
| Signer name | Microsoft Windows Hardware Compatibility Publisher |
| Certificate issuer name | Microsoft Windows Hardware Compatibility PCA |
| Certificate serial number | 61060e0c000000000008 |
VirusTotal report
None of the 51 anti-virus programs at VirusTotal detected the iastor.sys file.
Hashes [?]
| Property | Value |
|---|---|
| MD5 | 309c4d86d989fb1fcf64bd30dc81c51b |
| SHA256 | 90412120b005d5178e27efd09d52005be6ce1965e5cbb59612ead02c5896a8a7 |
What will you do with iastor.sys?
To help other users, please let us know what you will do with iastor.sys:
What did other users do?
The poll result listed below shows what users chose to do with iastor.sys. 22% have voted for removal. Based on votes from 9 users.
Malware or legitimate?
If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.
And now some shameless self promotion ;)
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Comments
Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.
I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.
iastor.sys should definitely be left alone!
iastor.sys is Intel SATA RAID Controller.
Windows XP cannot even see your hard drive without iastor.sys if you have a SATA/RAID hard drive. Maybe other types of hard drives also, I do not know anything about that, I have a SATA/RAID hard drive. Windows XP cannot even be installed without having iastor.sys on an F6 floppy disk or slipstreamed onto the XP CD if you have a SATA/RAID hard drive. XP will not see the hard drive and the install will error out.
I discovered all of this the hard way by blowing Windows Vista away on a new machine and had to jump through hoops to get Windows XP installed.
# 3 Jul 2009, 19:36
Cyberknight writes
iastor.sys is known to cause BSoD (Blue Screen of Death) in some Operating Systems, like Windows 7, when trying to mount virtual CD drives, using tools like EmuCD, Daemon Tools and so on.
# 21 Oct 2020, 1:09
Wesley Vogel writes