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#1
August 26th 20, 05:57 PM
posted to alt.comp.os.windows-10
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Why are they called 3.5 inch drives ?
When 3.5 inch drives measure approximately 4 inches wide, 5.8 inches
long and 0.8 inches thick, based on the dimensions of a 1 TB desktop-class drive. Derek 
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#2
August 26th 20, 06:13 PM
posted to alt.comp.os.windows-10
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Why are they called 3.5 inch drives ?
DerekF wrote:
When 3.5 inch drives measure approximately 4 inches wide, 5.8 inches long and 0.8 inches thick, based on the dimensions of a 1 TB desktop-class drive. Size is based on the diameter of the platters, not the case. Obviously a 3.5" diameter platter cannot fit inside a 3.5" case. https://en.wikipedia.org/wiki/List_o...e_form_factors (found using an online search)
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#3
August 26th 20, 06:14 PM
posted to alt.comp.os.windows-10
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Why are they called 3.5 inch drives ?
DerekF wrote:
When 3.5 inch drives measure approximately 4 inches wide, 5.8 inches long and 0.8 inches thick, based on the dimensions of a 1 TB desktop-class drive. 3.5" is a 'form factor' term, not the actual dimension. 2.5" is also a form factor, not the actual dimension. Obsolete 5.25" was another form factor, not the actual dimension. Nothing new. -- Mike Easter
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#4
August 26th 20, 06:16 PM
posted to alt.comp.os.windows-10
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Why are they called 3.5 inch drives ?
In article , DerekF
wrote: When 3.5 inch drives measure approximately 4 inches wide, 5.8 inches long and 0.8 inches thick, based on the dimensions of a 1 TB desktop-class drive the diameter of the actual platters inside, the same for 2.5" and 1.8" hard drives.
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#5
August 26th 20, 06:33 PM
posted to alt.comp.os.windows-10
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Why are they called 3.5 inch drives ?
On 26/08/2020 18:13, VanguardLH wrote:
DerekF wrote: When 3.5 inch drives measure approximately 4 inches wide, 5.8 inches long and 0.8 inches thick, based on the dimensions of a 1 TB desktop-class drive. Size is based on the diameter of the platters, not the case. Obviously a 3.5" diameter platter cannot fit inside a 3.5" case. https://en.wikipedia.org/wiki/List_o...e_form_factors (found using an online search) I thought it must be that but it must confuse many. Derek
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#6
August 26th 20, 08:51 PM
posted to alt.comp.os.windows-10
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Why are they called 3.5 inch drives ?
On 26/08/2020 18:33, DerekF wrote:
On 26/08/2020 18:13, VanguardLH wrote: DerekF wrote: When 3.5 inch drives measure approximately 4 inches wide, 5.8 inches long and 0.8 inches thick, based on the dimensions of a 1 TB desktop-class drive. Size is based on the diameter of the platters, not the case.Â* Obviously a 3.5" diameter platter cannot fit inside a 3.5" case. https://en.wikipedia.org/wiki/List_o...e_form_factors (found using an online search) I thought it must be that but it must confuse many. Derek I doubt it. You seem to be the first. The secret is in their full name - 3.5 inch *disk* drive.
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#7
August 26th 20, 11:23 PM
posted to alt.comp.os.windows-10
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Why are they called 3.5 inch drives ?
On 26/08/2020 20:51, MikeS wrote:
On 26/08/2020 18:33, DerekF wrote: On 26/08/2020 18:13, VanguardLH wrote: DerekF wrote: When 3.5 inch drives measure approximately 4 inches wide, 5.8 inches long and 0.8 inches thick, based on the dimensions of a 1 TB desktop-class drive. Size is based on the diameter of the platters, not the case.Â* Obviously a 3.5" diameter platter cannot fit inside a 3.5" case. https://en.wikipedia.org/wiki/List_o...e_form_factors (found using an online search) I thought it must be that but it must confuse many. Derek I doubt it. You seem to be the first. The secret is in their full name - 3.5 inch *disk* drive. I'll do a survey outside our local computer store tomorrow. Derek
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#8
August 27th 20, 12:36 AM
posted to alt.comp.os.windows-10
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Why are they called 3.5 inch drives ?
DerekF wrote:
VanguardLH wrote: DerekF wrote: When 3.5 inch drives measure approximately 4 inches wide, 5.8 inches long and 0.8 inches thick, based on the dimensions of a 1 TB desktop-class drive. Size is based on the diameter of the platters, not the case. Obviously a 3.5" diameter platter cannot fit inside a 3.5" case. https://en.wikipedia.org/wiki/List_o...e_form_factors (found using an online search) I thought it must be that but it must confuse many. Shugart (who became Seagate) introduced the 5.25" form factor back in 1980 (40 years ago). The 3.5" form factor arrived in 1983 (37 years ago). The 2.5" form factor arrived in 1988 (32 years ago).
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#9
August 27th 20, 12:46 AM
posted to alt.comp.os.windows-10
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Why are they called 3.5 inch drives ?
On 8/26/20 7:36 PM, this is what VanguardLH wrote:
DerekF wrote: VanguardLH wrote: DerekF wrote: When 3.5 inch drives measure approximately 4 inches wide, 5.8 inches long and 0.8 inches thick, based on the dimensions of a 1 TB desktop-class drive. Size is based on the diameter of the platters, not the case. Obviously a 3.5" diameter platter cannot fit inside a 3.5" case. https://en.wikipedia.org/wiki/List_o...e_form_factors (found using an online search) I thought it must be that but it must confuse many. Shugart (who became Seagate) introduced the 5.25" form factor back in 1980 (40 years ago). The 3.5" form factor arrived in 1983 (37 years ago). The 2.5" form factor arrived in 1988 (32 years ago). And now we have the little M2 drives. M2. 2242 are 22mmx42mm, kinda small. That's .866in x 1.654in
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#10
August 27th 20, 12:55 AM
posted to alt.comp.os.windows-10
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Why are they called 3.5 inch drives ?
In article , VanguardLH
wrote: Shugart (who became Seagate) introduced the 5.25" form factor back in 1980 (40 years ago). The 3.5" form factor arrived in 1983 (37 years ago). The 2.5" form factor arrived in 1988 (32 years ago). 1.8" hard drive in 1991. 1" hard drive, aka microdrive, in 1998. also a couple of other sizes that never went anywhere.
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#11
August 27th 20, 04:46 AM
posted to alt.comp.os.windows-10
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Why are they called 3.5 inch drives ?
Big Al wrote:
On 8/26/20 7:36 PM, this is what VanguardLH wrote: DerekF wrote: VanguardLH wrote: DerekF wrote: When 3.5 inch drives measure approximately 4 inches wide, 5.8 inches long and 0.8 inches thick, based on the dimensions of a 1 TB desktop-class drive. Size is based on the diameter of the platters, not the case. Obviously a 3.5" diameter platter cannot fit inside a 3.5" case. https://en.wikipedia.org/wiki/List_o...e_form_factors (found using an online search) I thought it must be that but it must confuse many. Shugart (who became Seagate) introduced the 5.25" form factor back in 1980 (40 years ago). The 3.5" form factor arrived in 1983 (37 years ago). The 2.5" form factor arrived in 1988 (32 years ago). And now we have the little M2 drives. M2. 2242 are 22mmx42mm, kinda small. That's .866in x 1.654in m.2 is a form factor for SSDs, not HDDs. For spinners: - Toshiba made a a 1.8" HDD that went into iPods. - Hitachi made a 1" microdrive spinner that went into iPod minis. - Toshiba made a 0.85" HDD (listed in the Guinness Book of Records) that went inside a Nokia N91 music phone.
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#12
August 27th 20, 04:52 AM
posted to alt.comp.os.windows-10
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Why are they called 3.5 inch drives ?
In article , VanguardLH
wrote: - Hitachi made a 1" microdrive spinner that went into iPod minis. not quite. 1" drives were put into compact flash cards, known as microdrives, which were used in a wide variety of products. ipod minis were the most common use, however, many people used them with cameras and other devices that used compact flash.
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#13
August 27th 20, 10:36 AM
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Why are they called 3.5 inch drives ?
DerekF wrote:
When 3.5 inch drives measure approximately 4 inches wide, 5.8 inches long and 0.8 inches thick, based on the dimensions of a 1 TB desktop-class drive. Derek For a good laugh, look up the various dimensions of the ubiquitous 2"x4" over time.
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#14
August 27th 20, 01:32 PM
posted to alt.comp.os.windows-10
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Why are they called 3.5 inch drives ?
On 27/08/2020 00:23, DerekF wrote:
On 26/08/2020 20:51, MikeS wrote: On 26/08/2020 18:33, DerekF wrote: On 26/08/2020 18:13, VanguardLH wrote: DerekF wrote: When 3.5 inch drives measure approximately 4 inches wide, 5.8 inches long and 0.8 inches thick, based on the dimensions of a 1 TB desktop-class drive. Size is based on the diameter of the platters, not the case.Â* Obviously a 3.5" diameter platter cannot fit inside a 3.5" case. https://en.wikipedia.org/wiki/List_o...e_form_factors (found using an online search) I thought it must be that but it must confuse many. Derek I doubt it. You seem to be the first. The secret is in their full name - 3.5 inch *disk* drive. I'll do a survey outside our local computer store tomorrow. I suggest a survey outside your local computer museum. Who still uses 3.5" disk drives?
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#15
August 27th 20, 03:45 PM
posted to alt.comp.os.windows-10
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Why are they called 3.5 inch drives ?
On 8/27/2020 5:32 AM, Jenny Telia wrote:
On 27/08/2020 00:23, DerekF wrote: On 26/08/2020 20:51, MikeS wrote: On 26/08/2020 18:33, DerekF wrote: On 26/08/2020 18:13, VanguardLH wrote: DerekF wrote: When 3.5 inch drives measure approximately 4 inches wide, 5.8 inches long and 0.8 inches thick, based on the dimensions of a 1 TB desktop-class drive. Size is based on the diameter of the platters, not the case.Â* Obviously a 3.5" diameter platter cannot fit inside a 3.5" case. https://en.wikipedia.org/wiki/List_o...e_form_factors (found using an online search) I thought it must be that but it must confuse many. Derek I doubt it. You seem to be the first. The secret is in their full name - 3.5 inch *disk* drive. I'll do a survey outside our local computer store tomorrow. I suggest a survey outside your local computer museum. Who still uses 3.5" disk drives? You apparently think that 3.5" disk drive means 3.5" *diskette* drive. That's not correct. There are 3.5" hard drives. In fact, *most* hard drives are 3.5". -- Ken
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